JP5981061B1 - Wing support material having an opening and method of using the same - Google Patents

Abstract

An object of the present invention is to firmly fix a purlin support that supports a roof tile and a crown tile, and further enhances the ventilation function to prevent the occurrence of condensation on the field board, and to the inside of the roof even in the presence of rain due to strong winds To provide a ridge support material having an opening that is designed to prevent inundation. A multi-layered waterproof sheet is formed on the side of the purlin abutment portion of the multi-layered waterproof sheet from the laterally folded overlapping portion (T) provided in the transverse direction perpendicular to the longitudinal direction. The multilayer waterproof sheet 20 having the formed waterproof sheet opening 28, and the ventilation sheet having both ends attached along the longitudinal direction of the multilayer waterproof sheet 20 in a state in which ventilation is possible with the waterproof sheet opening 28 of the multilayer waterproof sheet 20. 40, the ventilation sheet 40 having ventilation sheet openings 422 and 442 provided between the multilayer waterproof sheet mounting portion 43 of the ventilation sheet 40 and the purlin-side contact portion 412. [Selection] Figure 5

Description

  The present invention relates to a building support material having an opening suitable for use in a roof of a building, and more particularly, to a building support material having an opening provided with a building ventilation function and a shape retention function of the building support and a method of using the same. .

  Conventionally, gable roofs have been widely used in wooden detached houses and wooden buildings such as storehouses. The gable roof is a roof in which two inclined surfaces have a mountain shape from the top ridge of the roof to the ground. When the plan shape of the building is a quadrangle, the use of a gable roof has the advantage that the roof can be constructed with only two surfaces, so that the construction cost can be reduced and there is less concern about leakage. The gable roof also has the advantage that the risk of collapse of the house due to the weight of snow is small in heavy snowfall areas because it is difficult for snow to accumulate on the roof.

  By the way, in the conventional wooden prefabricated house, airtightness is improved and air conditioning equipment is advanced. And since the roof slope is restrained compared with a gable roof, the dormitory roof is widely used in the urbanized area where it is highly necessary to consider the shading regulation with the adjacent land. However, on the dormitory roof, which is relatively short of ventilation function compared to the gable roof, dew condensation is likely to occur on the roof panel such as field boards. Therefore, when plywood is used for the field board, this dew condensation may require replacement work of the field board on the dormitory roof, and the property value of the building was greatly impaired. . Therefore, financial institutions in charge of housing finance need to maintain the property value of the building that is the secured property during the loan period. It is becoming necessary to maintain the collateral value over a period of 35 years or more.

  On the other hand, the present applicant has proposed a waterproof sheet for a building suitable for a conventional Japanese building as a roof waterproof sheet for a building (see Patent Documents 1 and 2). Japanese traditional buildings tend to show the individuality of the ordering party, and there are building types that match the characteristics of the region. In the case of buildings, the site shape, the Building Standards Act, and the City Planning Act The actual situation is that wooden buildings that are actually built have various individualities. Therefore, the roof shape also varies, and it is necessary to bend the waterproof sheet so that the worker can fit inside the building wrap at the time of installation. Moreover, since rain accompanied by strong winds may directly hit the waterproof sheet, the shape of the notch and the opening provided in the waterproof sheet is devised to minimize the probability of flooding inside the roof of the building.

According to such a building waterproof sheet according to the applicant's proposal, according to the roof material and roof slope of various designs, the height can be adjusted according to the situation of the site, construction efficiency is high, It is preferred by roofer. In addition, the roof ridge is generally constructed by the operator by hand along the unevenness of the roofing material. According to the waterproof sheets of Patent Documents 1 and 2, the waterproof sheet is shaped by tapping lightly with a mallet or the like. Can be easily done. Furthermore, even if there is rain with strong winds, it is rare that water is flooded to the inside of the roof of the building, and there is an excellent feature that measures against rain leakage are adequately taken.
Moreover, in patent document 3, the waterproof member for roofs is proposed. The structure is provided with a metal film layer having a vent whose entire range is covered with a non-woven fabric layer provided on top.

Japanese Patent No. 4384725 Japanese Patent No. 4925222 Japanese Patent Laying-Open No. 2012-82624 Paragraph 0022, FIG.

However, in the structure of the waterproof sheet of Patent Documents 1 and 2, even if there is rain with strong winds, measures to prevent inundation to the inside of the roof can be achieved, but regarding the enhancement of the ventilation function which is a new issue, The level required for housing finance lending was insufficient. That is, in the conventional product, it was considered sufficient if air permeability was ensured, and the opening provided in the waterproof sheet was covered with a nonwoven fabric. In this respect, the structure of the waterproof sheet of Patent Document 3 is the same. However, an opening of a certain area or more is required for a housing finance loan qualification, and the opening qualification for housing finance is an opening provided in the waterproof sheet of Patent Document 3 described above using a nonwoven fabric. The covered structure was simply breathable and did not meet the requirements.
In addition, the purlin support for supporting the purlin needs to increase rigidity so that the purlin supports the ridge tile and the crown tile so that the purlin does not tilt to the inclined surfaces on both sides. In this case, since the weight of one piece of roof tile or crown tile is about 4 kg, it is necessary to firmly fix the purlin support to the hut assembly. On the other hand, the purlin support is installed on the field board or rafter in consideration of the rafter pitch (for example, 910 mm). Therefore, the purlin support tool needs to support the weight of about three ridge tiles and crown tiles by one piece, so there is a case where it becomes glazed, and there is a problem that the support strength is not always sufficient.

  The present invention solves the above-mentioned problems, and can firmly fix the purlin support that supports the roof tile and the crown tile, and further enhances the ventilation function to prevent the occurrence of dew condensation on the field plate. It aims at providing the ridge support material which has the opening part in which the countermeasure against the inundation to the inner side of a roof is aimed at even if it exists.

  As shown in FIGS. 1, 2, 5, 9, and 10, for example, the ridge support material having an opening of the present invention that solves the above problems is a laminated structure including an aluminum foil and a synthetic resin film, or A multilayer waterproof sheet 20 having at least one of a laminated structure including an elastomer sheet and an aluminum foil, and a transverse direction folded and overlapped portion (T) provided over a transverse direction perpendicular to the longitudinal direction of the multilayer waterproof sheet 20; A multilayer waterproof sheet 20 having a waterproof sheet opening 28 formed closer to the purlin contact part than the ventilation sheet attaching part 27 of the waterproof sheet 20 and the waterproof sheet opening 28 of the multilayer waterproof sheet 20 can be ventilated. The ventilation sheet 40 having both ends attached along the longitudinal direction of the multilayer waterproof sheet 20, and the multilayer waterproof sheet attachment part 43 and the purlin-side contact part 41 of the ventilation sheet 40. Characterized in that it comprises a ventilation sheet 40 having a ventilation seat opening and (422 and 442) provided between the.

In the building support material having an opening of the present invention, preferably, the synthetic resin film has heat shrinkability, the synthetic resin film is laminated on one surface side of the aluminum foil, and a multilayer A longitudinal folded portion (L) provided between the ventilation sheet attaching portion 27 and the roof material attaching portion (24, 25) of the multilayer waterproof sheet 20 is provided along the longitudinal direction of the waterproof sheet 20. It is good to have. Preferably, a coating film is further coated on the other surface side of the aluminum foil.
In the building support material having an opening of the present invention, preferably, the elastomer sheet has tear resistance and heat shrinkability, and the elastomer sheet is laminated on one surface side of the aluminum foil, While being provided along the longitudinal direction of the multilayer waterproof sheet 20, the longitudinal folded portion (L) provided between the ventilation sheet attaching part 27 of the multilayer waterproof sheet 20 and the roof material attaching part (24, 25). It is good to have. Preferably, a coating film is further coated on the other surface side of the aluminum foil.

  In the ridge support material having an opening of the present invention, preferably, the state in which the waterproof sheet opening 28 of the multilayer waterproof sheet 20 and the ventilation sheet opening (422, 442) of the ventilation sheet 40 can be ventilated is the waterproof sheet opening. 28 and the ventilating seat opening (422, 442), the ratio of the effective area to the ceiling area of the opening area of the smallest opening area is preferably 1/1600 or more. A ceiling area means the ceiling area about the building which has a roof in which the building support material which has an opening part is installed.

In the ridge support material having an opening according to the present invention, preferably, the ventilation sheet 40 includes a ventilation sheet main body 41 having a purlin-side contact portion 412 and a multilayer waterproof sheet mounting portion provided in the ventilation sheet main body 41. 43, and a roof tile side opening installation portion 42 provided between the ventilation sheet main body 41 and the multilayer waterproof sheet mounting portion 43, and has a roof tile side opening 422 as a ventilation sheet opening. It is good to have.
In the ridge support material having an opening of the present invention, preferably, in addition to the ridge tile side opening installation portion 42 having the ridge tile side opening 422, the intermediate opening installation portion 44 having the intermediate opening 442 is further provided with the ventilation sheet. It is good to have between the main-body part 41 and the multilayer waterproof sheet attaching part 43. FIG. The intermediate opening 442 acts as a ventilation seat opening. The ventilation sheet opening is not limited to the two-layer structure of the roof tile side opening 422 and the intermediate opening 442, and may be provided with three or more layers.

In the ridge support material having an opening according to the present invention, preferably, the ventilation sheet 40 further has a portion 412 in contact with the purlin of the ventilation sheet main body 41 fixed to the multilayer waterproof sheet 20 in the longitudinal direction. .
In the ridge support material having an opening of the present invention, preferably, as shown in FIGS. 5C and 10C, for example, ventilation is performed in a state where the ridge support material having the opening is mounted on the ridge tree. The distance (L _412-43 ) between the sheet fixing portion 412 in contact with the purlin in the sheet 40 and the multilayer waterproof sheet attaching portion 43 is the distance between the purlin contact waterproof sheet portion 29 and the ventilation sheet attaching portion 27 in the multilayer waterproof sheet 20. It is good to be comprised to about the same grade as ( _L29-27 ).
In the ridge support material having an opening of the present invention, preferably, as shown in FIGS. 5C and 10C, for example, the ventilation sheet 40 includes a ventilation sheet main body 41 and a ridge roof side opening installation portion 42. It is preferable that a ventilation sheet bent portion 424 is provided between the two.
In the ridge support material having an opening of the present invention, preferably, as shown in FIGS. 5C and 10C, for example, in the state where the multilayer waterproof sheet 20 and the ventilation sheet 40 are in contact, the ventilation sheet 40 is a state of being folded in a ventilated sheet bent portion 424, in a state where the ventilation sheet 40 is deployed against the multilayer waterproofing sheet 20 is in a state where the ventilation sheet 40 is deployed in a ventilated sheet bent portion 424 Good.

The first method of using the ridge support material having the opening of the present invention that solves the above-mentioned problems is, for example, as shown in FIG. 7, the transverse direction folded overlap portion (T) and the longitudinal direction folded overlap portion ( L) is a method of using a ridge support material having an opening provided with a ridge ridge contact portion of the multilayer waterproof sheet 20 placed on the top surface of the ridge ridge 31 placed on the ridge support member 32 ( S100) and the bottom of the multilayer waterproof sheet 20 are pushed down from the ventilation sheet 40 in contact with the purlin 31 so that the waterproof sheet opening 28 of the multilayer waterproof sheet 20 and the ventilation sheet opening of the ventilation sheet 40 can be ventilated. In the state, the step (S104, S106) of expanding the ventilation sheet opening (422, 442) of the ventilation sheet 40, the skirt of the multilayer waterproof sheet 20 is attached to the roof material 35, and the folded portion (L ) Expanded That the step (S112), characterized in that it comprises a.
The 2nd usage method of the ridge support material which has an opening part of the present invention which solves the above-mentioned subject has an opening part provided with the above-mentioned transverse direction folding superposition part (T), for example, as shown in FIG. A method of using a ridge support material, the step (S200) of placing the ridge tree contact portion of the multilayer waterproof sheet 20 on the top surface of the ridge tree 31 placed on the ridge support tool 32, and the hem of the multilayer waterproof sheet 20 The ventilation sheet 40 is pushed down from the ventilation sheet 40 in contact with the purlin 31 so that the waterproof sheet opening 28 of the multilayer waterproof sheet 20 and the ventilation sheet opening of the ventilation sheet 40 can be ventilated. A step (S204, S206) of expanding the portions (422, 442), and a step (S212) of attaching the skirt portion of the multilayer waterproof sheet 20 to the roofing material 35.

According to the building support material having an opening in which the multilayer waterproof sheet and the ventilation sheet of the present invention are combined, the following effects are obtained.
(A) By deploying the folded portion L in the longitudinal direction of the multilayer waterproof sheet, the folded portion L in the longitudinal direction acts as a rainfall, preventing flooding to the inside of the roof even in the presence of rain with strong winds. Measures can be taken and there is almost no leakage.
(B) With the waterproof sheet opening of the multilayer waterproof sheet and the ventilation sheet opening of the ventilation sheet ventilated, the building support member having the opening can be attached to the cabin set in a state of covering the purlin. Therefore, the ventilation function is enhanced, and moisture in the back of the shed is discharged to the outside, so that dew condensation on the field board can be prevented. This ventilation function is treated as a housing-finance eligible opening. Conventionally, ventilation was performed between the back of the roof tile and the ground, but having an “opening” makes it a product that meets the requirements for exhaust holes in the housing finance loan standard and meets the standard. As a result, it has a function as a ventilation building, it is not necessary to use a conventional ventilation building, and it is desirable from the viewpoint of satisfying the requirement of “building as much as possible” stipulated in the loan standard. An example of a conventional ventilation building is “Ventilation Star” (registered trademark) manufactured and sold by the applicant.
(C) Since the ridge support material having an opening is attached to the roof material so as to cover the timber, the ridge tree that supports the ridge tile and the crown tile in order to reinforce the ridge support by the shape retention property of the aluminum foil of the multilayer waterproof sheet The support can be firmly fixed to the roofing material. Moreover, even if there is rainwater that has passed over the overlapped portion L in the longitudinal direction of the multilayer waterproof sheet, the presence of the ventilation sheet can prevent rainwater from penetrating into the back of the hut (water shielding function ).
(D) Since the ridge support material having an opening can be circulated in a state where the multilayer waterproof sheet and the ventilation sheet are wound in a roll shape, it is convenient for transportation and storage before use. Moreover, since the building support material which has an opening part is made into the structure where a ventilation sheet is also expand | deployed when it expand | deploys and is installed in a roof material, for example, as shown in FIG. 5, construction efficiency increases.

BRIEF DESCRIPTION OF THE DRAWINGS It is a structure perspective view explaining one form of the ridge support material which has an opening part of this invention, (a) is a top perspective view seen in the longitudinal direction from the top surface direction of the purlin to be mounted, (b) is a transverse direction. It is a perspective view. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram explaining the form of the ridge support material which has an opening part of this invention, (a) is the top view seen from the upper surface, (b) is the transverse direction seen from the bb direction of Fig.2 (a). Sectional drawing, (c) is a bottom view seen from the lower surface, and (d) is a side view seen from the direction of FIG. 2 (a) dd. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the multilayer waterproof sheet used for the ridge support material which has an opening part of this invention, (a) is sectional drawing of the AA direction of (b) about a multilayer waterproof sheet, (b) is a structure of a multilayer waterproof sheet. It is a perspective view. It is an expanded sectional view of the multilayer waterproof sheet used for the ridge support material which has an opening part of this invention. It is a principal part expanded sectional view explaining the construction state of the ridge support material which has an opening part of this invention, (a) is principal part sectional drawing explaining the accommodation state of the ridge support material which has an opening part near the ridge part of a roof. (B) is principal part sectional drawing explaining the operation | work aspect in the ridge part vicinity of the ridge support material which has an opening part, (c) is principal part sectional drawing explaining the effect of the ridge support material which has an opening part. It is an expanded view of the ventilation sheet used for the ridge support material which has an opening part of this invention. It is a flowchart explaining the installation method of the waterproof sheet | seat for buildings which has a transverse direction folding superimposition part (T) and a longitudinal direction folding superimposition part (L). It is a perspective view explaining the case where the ridge support material which has an opening part in the longitudinal direction of a ridge is laid. It is a block diagram explaining 2nd Embodiment of the ridge support material which has an opening part of this invention, (a) is the top view seen from the upper surface, (b) is seen from the bb direction of Fig.9 (a). FIG. 9C is a cross-sectional view in the transverse direction, FIG. 9C is a bottom view seen from the lower surface, and FIG. 9D is a side view seen from the dd direction in FIG. It is a principal part expanded sectional view explaining the construction state of the ridge support material which has the opening part of the 2nd Embodiment of this invention, (a) shows the accommodation state of the ridge support material which has the opening part in the ridge part vicinity of a roof. Cross-sectional view of the main part to explain, (b) is a cross-sectional view of the main part to explain the work mode in the vicinity of the ridge of the ridge support material having the opening, (c) is a key to explain the utility of the ridge support material having the opening. FIG. It is a flowchart explaining the installation method of the waterproof sheet | seat for buildings which has a transverse direction folding | stacking superimposition part (T).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a structural perspective view illustrating an embodiment of a ridge support material having an opening according to the present invention, in which (a) is a plan perspective view seen from the top surface direction of a ridged tree to be mounted in the longitudinal direction; FIG. 3 is a perspective view in the transverse direction.
The ridge support member having an opening of the present invention integrally constitutes the multilayer waterproof sheet 20 and the ventilation sheet 40, and also forms the waterproof sheet opening 28 of the multilayer waterproof sheet 20 and the ventilation sheet opening (422, ventilation sheet 40). 442) can be attached to the roofing material in a state where the ridge support material having the opening covers the timber. When the ridge support material having the opening of the present invention is attached to the roof material in this way, the ventilation function is enhanced, and moisture in the back of the shed can be discharged outdoors, thereby preventing the occurrence of condensation on the field board etc. .
Specifically, both ends of the ventilation sheet 40 are attached to the multilayer waterproof sheet 20 using an adhesive tape, an adhesive, or the like. The structure of the ventilation sheet 40 will be described in detail later. First, the structure of the multilayer waterproof sheet 20 will be described in detail.

  FIG. 2 is a configuration diagram illustrating an embodiment of a building support member having an opening, and shows a state in which a ventilation sheet 40 is attached to the multilayer waterproof sheet 20. 2A is a plan view seen from the top, FIG. 2B is a transverse cross-sectional view seen from the bb direction in FIG. 2A, FIG. 2C is a bottom view seen from the bottom, and FIG. FIG. 2A is a side view as seen from the dd direction. As the multilayer waterproof sheet 10 in the two-way folded state, a multilayer waterproof sheet 20 having a two-way folded state in which a transverse direction folded overlap portion T and a longitudinal direction folded overlap portion L are formed is used. It has stretchability not only in the longitudinal direction but also in the transverse direction.

In the figure, the ridge support material having an opening is used by adjusting the multilayer waterproof sheet 20 to an appropriate length, as well as an adhesive tape 25, a release paper 26, a ventilation sheet affixing portion 27, a waterproof sheet opening 28, a purlin gutter. A waterproof sheet 29 is provided. A ventilation sheet 40 is attached to the multilayer waterproof sheet 20 via a ventilation sheet attaching part 27. The ventilation sheet 40 is attached to the multilayer waterproof sheet 20 so as to cover the purlin-contacting waterproof sheet 29 and the waterproof sheet opening 28 which are the contact parts with the purlin in the multilayer waterproof sheet 20. As shown in FIG. 2 (b), the ventilation sheet 40 can be in a state in which both end portions thereof are erected and the multilayer waterproof sheet 20 is deployed as the bottom surface, thereby facilitating mounting on the ridge. . In addition, if the ventilation sheet 40 is made into the state which folded the both ends and overlapped with the multilayer waterproof sheet 20, the convenience of conveyance and storage of the ridge support material which has an opening part can be aimed at.
In addition, the multilayer waterproof sheet 20 and the ventilation sheet 40 may adhere | attach the center parts 29 and 412 which contact | abut with the purlin in a longitudinal direction, and may improve both integrity. In this case, when both end portions 42 and 44 of the ventilation sheet 40 are raised, the central portion 412 of the ventilation sheet 40 is maintained in a bonded state. 44 becomes a developed state, and the cross section is substantially triangular.

  As shown to Fig.2 (a), the multilayer waterproof sheet 20 has a symmetrical shape via the center part used as a contact part with a purlin. The multilayer waterproof sheet 20 is provided with one folded portion L in the longitudinal direction along the ventilation sheet 40.

As shown in FIG. 2 (b), since the longitudinal folded portion L is present, the multilayer waterproof sheet 20 includes an upper multilayer waterproof sheet portion 201, an upper folded portion 202, a folded multilayer waterproof sheet portion 203, and a lower folded portion. The bending part 204 and the lower multilayer waterproof sheet part 205 are symmetrically provided. Further, as shown in FIG. 2C, the purlin mounting fold part 206 appears on the lower surface of the multilayer waterproof sheet 20, and is a bent portion when the multilayer waterproof sheet 20 is mounted on the purlin. As for the shape of the typical multilayer waterproof sheet 20, with respect to the transverse direction, the interval T ₂₀₆ between the folds for attaching the purlins 206, the folds for attaching the purlins ₂₀₆ with the folded multilayer waterproof sheet 203 folded, and the lower multilayers. It is (Tr + T ₂₀₆ + Tl) using the distances Tr and Tl between both ends of the waterproof sheet portion 205. On the other hand, the length L _all in the longitudinal direction of the multilayer waterproof sheet 20 is appropriately determined from the viewpoint of the length of the ridge, the overall weight of the multilayer waterproof sheet 20, and workability.

  The adhesive tape 25 is preferably a tape material made of a butyl, EPDM or asphalt material. It is preferable that a width of 10 mm to 50 mm (preferably 30 mm) is attached to the skirt M in the longitudinal direction of the simple construction apparatus for a wall. The release paper 26 acts to prevent the adhesive tape 25 from sticking until the adhesive tape 25 is used to attach a ridge support material having an opening to a roof covering material such as a tile. For the ventilation sheet 40, for example, a cloth made of a synthetic or natural fiber material such as polypropylene or polyester, or an elastomer sheet may be used.

In order to attach the overlapped portion T in the transverse direction so as to adjust to the unevenness of the roofing material, the overlapped portion T is continuously provided, and the interval Lp between the folded overlapped portions T is 5 mm to 20 mm. The rate Expt is preferably 110% to 160%. In order to extend the longitudinal folded portion L in the longitudinal direction mainly along the valley portion of the roofing material, it is preferable to secure a length T ₂₀₃ in the transverse direction of the folded multilayer waterproof sheet portion 203 of 20 mm to 40 mm. .

  The ventilation sheet sticking part 27 is provided on the side close to the upper folding part 202 of the upper multilayer waterproof sheet part 201, and both ends of the ventilation sheet 40 are stuck. The ventilation sheet sticking part 27 is provided continuously in the longitudinal direction in the vicinity of both edges of the upper multilayer waterproof sheet part 201 in order to ensure the attachment of the ventilation sheet 40. The ventilation sheet 40 may be attached to the multilayer waterproof sheet 20 by using, for example, sticking using a hot-melt type adhesive or pressure-sensitive adhesive, but is not limited to this. Alternatively, mechanical engagement may be used. For mechanical engagement, there is a combination of an umbrella-shaped fine projection of about several millimeters provided in a planar shape and a loop-shaped locking portion having a curvature of about several millimeters provided on the opposing surface. included.

The waterproof sheet opening 28 is provided continuously in the longitudinal direction between the purlin mounting folds 206 and the upper folded part 202 located on both sides of the upper multilayer waterproof sheet 201. The shape of the waterproof sheet opening 28 is preferably determined so that the ventilation property can be secured in a state where the waterproof sheet opening 28 is covered with the ventilation sheet 40. As shown in FIG. 2C, the waterproof sheet openings 28 are formed in two rows in the longitudinal direction, and the ratio of the effective area of the openings to the ceiling area is ensured to be 1/1600 or more. It is good to decide. Note that the waterproof sheet openings 28 may be formed in one or more rows in the longitudinal direction.
The purlin-abutting waterproof sheet portion 29 is provided approximately at the center of the upper multilayer waterproof sheet portion 201, and the width thereof corresponds to the width of the purlin that abuts when the multilayer waterproof sheet 20 is attached to the roof. Yes.

  According to the ridge support material having an opening of the present invention, the multilayer waterproof sheet 10 is cut into an appropriate shape for the ridge, so that the unevenness of the roof material can be obtained by extending the laterally folded portion T. In addition to being able to cope with the above, by extending the overlapped portion L in the longitudinal direction, it not only handles the steps of the roofing material but also serves as a water return. In addition, because it is a sheet that has the elasticity of a thin elastomer sheet in the transverse direction and the shape retention of aluminum foil for workers, it is easy to adjust to the hand, so compared to the area where flat roof tiles are sown. Thus, it is possible to prevent the occurrence of construction defects that tend to occur in a typical manner at the boundary between areas with different roof inclinations, such as a ridge tile, leading to a reduction in construction time.

  Then, the multilayer waterproof sheet used for the ridge support material which has an opening part of this invention is demonstrated. 3 is a configuration diagram of the multilayer waterproof sheet, FIG. 3A is a cross-sectional view of the multilayer waterproof sheet in the AA direction of FIG. 3B, and FIG. 3B is a configuration perspective view of the multilayer waterproof sheet. .

  In the figure, the multilayer waterproof sheet 10 is folded in the transverse direction over the transverse direction orthogonal to the longitudinal direction in the middle of the longitudinal direction (Length direction) of the multilayer waterproof sheet, for example, as shown in FIG. The overlapped portion T is formed, and the two-way folded state is formed in which the longitudinally folded overlapped portion L is formed over the longitudinal direction.

As shown in FIGS. 3A and 3B, the interval Lp between the laterally folded portions T is determined as appropriate in order to cope with the complexity of the uneven shape of the roof. In addition, since the laterally folded folded portion T exists, the multilayer waterproof sheet 10 includes an upper multilayer waterproof sheet portion 101, an upper folded portion 102, a folded multilayer waterproof sheet portion 103, a lower folded portion 104, and a lower multilayer waterproof sheet. Part 105 and a connecting multilayer waterproof sheet part 106. Then, when the folded multilayer waterproof sheet portion 103 is expanded, the distance between the upper multilayer waterproof sheet portion 101 and the lower multilayer waterproof sheet portion 105 is adjusted in the range of twice the longitudinal length L ₁₀₃ of the folded multilayer waterproof sheet portion 103. it can. A longitudinal length L ₁₀₃ of the longitudinal folded multilayer waterproof sheet portion 103 and a longitudinal length L 106 of the longitudinal connected multilayer waterproof sheet portion ₁₀₆ are determined so as to match the interval Lp of the longitudinal folded overlapped portions L. .

Also, as shown in FIG. 3 (b), since the longitudinal folded portion L is present, the multilayer waterproof sheet 10 includes a longitudinal stretch side upper multilayer waterproof sheet portion 121, a longitudinal stretch side upper folded portion 122, a longitudinal It has a stretched-side folded multilayer waterproof sheet portion 123, a longitudinal stretch-side lower folded portion 124, and a longitudinal stretch-side lower multilayer waterproof sheet portion 125. When the longitudinally stretched side folded multilayer waterproof sheet portion 123 is developed, the distance between the longitudinally stretched side upper multilayer waterproof sheet portion 121 and the longitudinally stretched side lower multilayer waterproof sheet portion 125 is equal to the width of the longitudinally stretched side folded multilayer waterproof sheet portion 123. Adjustment can be made in a range twice the direction length _T123 .

In order to attach the transverse direction folded overlap portion T so as to conform to the unevenness of the roofing material, the transverse direction folded overlap portion T is continuously provided, the interval Lp between the transverse direction folded overlap portions T and the stretch ratio Expt Is preferably set to an appropriate value according to the unevenness of the roofing material to be covered. Here, the stretching ratio Expt of the laterally folded portion T can be defined by the following equation, for example.
Expt = (Lp + 2L ₁₀₃ ) / Lp (1)

The longitudinal folded portion L is stretched in the longitudinal direction so as to mainly conform to the uneven shape such as the step of the roofing material to be covered, so that the longitudinal stretched folded multilayer waterproof sheet portion 123 has an appropriate length. It is preferable to ensure. Here, the stretch ratio Expl of the overlapped portion L in the longitudinal direction can be defined by the following equation using, for example, the length T _all in the transverse direction of the multilayer waterproof sheet 10.
Expl = (T _all + 2T ₁₂₃ ) / T _all (2)

  According to the multilayer waterproof sheet of this aspect, since the multilayer waterproof sheet in the two-way folded state is used, by extending the transverse direction folded overlap portion T, it can cope with the unevenness of the roofing material, and the longitudinal direction By extending the folded overlap portion L, not only the response to the step difference of the roof material but also the function of returning water to the gap due to the step difference of the roof material is achieved.

  FIG. 4 is a configuration diagram illustrating a multilayer waterproof sheet used for a ridge support member having an opening according to the present invention. In the figure, the multilayer waterproof sheet 50 has a four-layer structure of a baking resin coating 51, an aluminum foil 52, an adhesive 53, and a synthetic resin film 54. Here, in consideration of durability and tear resistance, the baked resin-based paint 51 has an application thickness of a resin-based paint such as an epoxy-based resin or an acrylic silicon-based resin of 2 μm to 20 μm, preferably 3 μm to 10 μm, particularly preferably 5 μm to It is good to bake about 8 μm. If the coating thickness is less than 2 μm, sufficient durability and corrosion resistance cannot be improved. When the coating thickness exceeds 20 μm, the number of coatings increases and the production efficiency decreases. Since the baking resin coating 51 is provided on the front side when the multilayer waterproof sheet is mounted on the roof, various colors and patterns can be selected by appropriately selecting the pigment. The baking resin coating 51 is determined in consideration of the workability of the aluminum foil 52 on the surface. As the baking resin-based paint 51, an epoxy resin-based paint or an acrylic resin-based paint, or in recent years, durability is particularly important in order to extend the life of a house. Is. Further, polyurethane, chlorinated rubber, vinyl chloride, or the like may be used.

  The aluminum foil 52 is soft aluminum because the operator forms it manually, and the thickness is preferably about 40 μm to 120 μm (preferably 60 μm). The thickness of the aluminum foil 52 is the thickness and heat shrinkage of the synthetic resin film 54 to be bonded, the workability when the worker deforms the multilayer waterproof sheet to correspond to the unevenness of the roof material, and the multilayer waterproof sheet. It depends on the ability of the weaving machine used for manufacturing. And the lower limit side of the thickness of the aluminum foil 52 is determined by the following requirements.

(I) The occurrence frequency of the winding nest in the process of bonding the aluminum foil 52 and the synthetic resin film 54 together.
(Ii) The heat shrinkage force in the line direction increases with respect to the force by which the aluminum foil 52 laminates and fixes the synthetic resin film 54, and the synthetic resin film 54 is peeled off from the aluminum foil 52.
(Iii) The heat shrinkage force in the line direction increases with respect to the force with which the aluminum foil 52 maintains the shape, and the aluminum foil 52 is rounded to the surface side.
(Iv) Retention force (shape retention) that is not deformed by wind force at the site where the aluminum foil 52 is actually constructed.

  On the other hand, the upper limit of the thickness of the aluminum foil needs to be low enough to allow the operator to deform the multilayer waterproof sheet so as to cope with the unevenness of the roofing material by hand processing. Furthermore, the thickness of the aluminum foil 52 and the synthetic resin film 54 needs to be rigid enough to be woven by a weaving machine used for manufacturing a multilayer waterproof sheet. The thickness of the aluminum foil 52 that satisfies these three requirements is preferably 40 μm to 120 μm.

The adhesive 53 is used for adhesion between the two layers of the aluminum foil 52 and the synthetic resin film 54. The adhesive 53 can relieve the stress of the folded portion that occurs between the two layers, and a sheet having higher folding workability can be obtained. Adhesion between the two layers of the aluminum foil 52 and the synthetic resin film 54 is performed by a processing method called dry lamination. Dry lamination is a method in which an adhesive is diluted to an appropriate viscosity with an organic solvent, applied to a film, dried, and then bonded to another film by pressure bonding. The adhesive 53 includes a polyester-based adhesive, a polyether-based adhesive, and the like, and the performance of the laminate film is also determined by the characteristics of the adhesive used, such as heat resistance, chemical resistance, and deep drawability.
There are two types of dry laminates: a general method of diluting with an organic solvent, and a solventless type in which an organic solvent is not used and the viscosity is adjusted to an appropriate value by heating. Recently, there is also an emulsion type (aqueous type in which an adhesive is dispersed in water).

The synthetic resin film 54 may be a synthetic resin having a heat resistance of 150 ° C. or higher, such as PET, nylon resin, or vinyl chloride, and having high weather resistance and high tear resistance. The thickness of the synthetic resin film 54 is preferably 10 μm to 80 μm. When the thickness of the synthetic resin film 54 exceeds 80 μm, the production efficiency is lowered for the following reason.
(I) A nest in the bonding step is likely to occur.
(Ii) With respect to the force (β) in which the aluminum foil 52 laminates and fixes the synthetic resin film 54, the heat shrinkage force (α) in the line direction increases, and the synthetic resin film 54 peels from the aluminum foil 52. End up.
(Iii) With respect to the force (γ) that the aluminum foil 52 retains its shape, the heat shrinkage force (α) in the direction of preparation increases, and the aluminum foil 52 is rounded to the surface side.
(Iv) Since the multilayer sheet itself is hardened, the yield and volume of wrinkling (pleating) are deteriorated.
On the other hand, when the thickness of the synthetic resin film 54 is less than 10 μm, weather resistance and tear resistance cannot be ensured when used for a long period of about 25 to 50 years as a building support material having an opening. According to the multilayer waterproof sheet of this aspect, since the sheet has elasticity of the thin synthetic resin film 54 in the transverse direction and shape retention of the aluminum foil 52 for the operator, it is easy to be familiar with the hand. Is less likely to occur, leading to a reduction in construction time.

It is preferable that the thickness of the synthetic resin film 54 and the aluminum foil 52 be determined by satisfying the heat-shrinkable condition, woven by a weaving machine, and capable of handling the unevenness of the roofing material manually by an operator. However, when the durability of the synthetic resin film 54 is insufficient, a synthetic resin sheet may be used in place of the synthetic resin film 54 as another aspect of the multilayer waterproof sheet. The thickness of the synthetic resin sheet is preferably 80 μm to 300 μm. If the thickness of the synthetic resin sheet exceeds 300 μm, the manufacturing efficiency and construction efficiency of the ridge support material having the opening will decrease. As the synthetic resin sheet, a sheet using a general-purpose resin such as an elastomer sheet, a vinyl chloride sheet, a polyethylene sheet, or a polystyrene sheet can be used.
On the other hand, in the case of a synthetic resin film, the synthetic resin film can be directly heat-sealed to the aluminum foil 52 instead of the adhesive layer. In the case of a synthetic resin sheet, a resin-based coating layer may be further provided. Further, a synthetic resin sheet may be provided on one surface of the aluminum foil, and a synthetic resin film layer may be provided on the other surface.

Table 1 explains various aspects of the ridge support material having an opening.

Next, referring to FIGS. 1 and 2B again, the details of the structure of the ventilation sheet 40 will be described.
The ventilation sheet 40 includes a ventilation sheet body 41, a roof tile side opening installation portion 42, a roof tile side opening portion 422, a multilayer waterproof sheet mounting portion 43, an intermediate opening installation portion 44, an intermediate opening portion 442, and a sewing line portion 46. ing. For the ventilation sheet 40, a fiber material such as polypropylene or polyester is used. The fiber material may be any fiber having water repellency and durability. The ventilation sheet 40 may be any material having water repellency and durability, such as an elastomer sheet or a resin film, and may have a woven structure used for a normal cloth material such as a nonwoven fabric, a plain weave, or a twill weave.
The ventilation sheet main body 41 has a width in the transverse direction that covers the waterproof sheet opening 28 of the multilayer waterproof sheet 20, and is an approximate width between the upper bent portions 202 positioned on both sides of the upper multilayer waterproof sheet 201. Same as or slightly narrower. Although the thickness of the ventilation sheet main body 41 is preferably thinner than that of the multilayer waterproof sheet 20, since it is necessary to ensure durability, it is preferable to use a fiber material having high weather resistance and high tear resistance.

  The roof tile side opening installation portion 42 and the intermediate opening installation portion 44 form a cylindrical portion having a square cross section by the edge portion of the ventilation sheet main body portion 41 and the multilayer waterproof sheet attachment portion 43. The roof tile side opening installation part 42 is located on the bottom of the outside near the edge of the roof tile in a state where the ventilation sheet 40 and the multilayer waterproof sheet 20 are mounted on the roof tree. The intermediate opening installation part 44 is located at the bottom of the outside near the purlin or the multilayer waterproof sheet 20 with the ventilation sheet 40 and the multilayer waterproof sheet 20 mounted on the purlin. The roof tile side opening installation section 42 and the intermediate opening installation section 44 are located at the bottom in a state where the ventilation sheet 40 and the multilayer waterproof sheet 20 are mounted on the purlin, thereby facilitating the condensation water to be discharged to the outdoors. In addition, it prevents rainwater from entering and ensures ventilation performance. The ridge tile side opening installation portion 42 and the intermediate opening installation portion 44 have a ridge tile side opening 422 and an intermediate opening 442, respectively. The roof tile side opening 422 and the intermediate opening 442 act as ventilation sheet openings.

  The shape and installation density of the roof tile side opening 422 and the intermediate opening 442 may be determined so that the ratio of the effective area of the opening to the ceiling area is 1/1600 or more. As for the roof tile side opening part 422 and the intermediate | middle opening part 442, it is good for the opening part smaller than the waterproof sheet opening part 28 of the multilayer waterproof sheet 20, for example to provide two rows or three rows in a transverse direction. Intrusion of rainwater can be prevented by making the hole of the opening small. In order to secure the ratio of the effective area of the opening to the ceiling area when the openings are made smaller, a plurality of openings are provided in the transverse direction and the intervals are reduced to ensure the effective area of the opening. Good to do. Note that the roof tile side opening 422 and the intermediate opening 442 may be provided in a row with an opening shape that can ensure the ratio of the effective area of the opening to the ceiling area. Furthermore, the shape of the waterproof sheet opening 28 and the roof tile side opening 422 or the intermediate opening 442 can ensure that the ratio of the effective area of the opening to the ceiling area is 1/1600 or more, and can prevent rainwater from flowing into the attic of stormy weather. As long as it can prevent intrusion, the magnitude relationship between the two may be determined appropriately.

For example, the opening in the waterproof sheet opening 28 and the roof tile side opening 422 or the intermediate opening 442 is preferably about 20 to 400 cm ² , more preferably about 60 to ²⁰⁰ cm ² as the opening area per 1 meter unit in the longitudinal direction. 80 to 140 cm ² is most preferable. When the opening area per meter unit in the longitudinal direction is 20 cm ² or less, the ratio of the effective area of the opening to the ceiling area is secured to 1/1600 or more even if a building support material having an opening over the entire length of the building is installed. It becomes difficult to do. On the other hand, if it is 400 cm ² or more, the opening of the ridge support material having the opening becomes too large, and it becomes difficult to prevent flooding during stormy weather.

For example, the effective ceiling area of the ventilation building may be calculated based on the loan standard of Flat 35 (Housing Finance Support Organization). According to the loan standard, “the back wall of the eaves or the back of the shed has an air intake hole, and the exhaust hole is provided at the top of the shed as much as possible using an exhaust pipe or other equipment. The ratio of the effective area of the hole to the ceiling area is 1/900 or more, and the ratio of the effective area of the exhaust hole to the ceiling area is 1/600 or more. Is prescribed.
Therefore, the installation of the building support material having the opening to the building is, for example, a financing condition according to the current standards of the Housing Finance Support Organization, as long as the ratio of the effective area of the opening to the ceiling area can ensure 1/1600 or more, Therefore, the ridge support material having the opening may be installed all over the ridge length direction, or may be partially installed. When a ridge support material having an opening partly is installed in the ridge, a waterproof sheet without a normal ventilation function may be installed for a ridge part where the ridge support material having an opening part is not installed.

The multilayer waterproof sheet attaching portion 43 is a portion attached to the ventilation sheet attaching portion 27, and the edges of both sides of the ventilation sheet main body portion 41 in the lateral direction in a state where the ridge support material having the opening of the present invention is attached to the roof. Located along. Here, the multilayer waterproof sheet mounting portion 43 is connected to the edges on both sides in the lateral direction of the ventilation sheet main body 41 through the double roof through the ridge roof side opening installation portion 42 and the intermediate opening installation portion 44. It is located continuously in the longitudinal direction.
For example, when both ends of one cloth-like sheet are folded to provide the roof tile side opening installation portion 42 and the intermediate opening installation portion 44 at both ends of the ventilation sheet 40, the sewing line portion 46 is provided at both ends of the ventilation sheet 40. Is a linear portion of the sewing thread that appears when the bag is folded and sewn on the back surface of the ventilation sheet main body 41. In addition, when folding both ends of the ventilation sheet 40 and fixing the ventilation sheet 40 to the ventilation sheet main body 41, means such as an adhesive, a pressure-sensitive adhesive, heat fusion, and pressure bonding may be used instead of the sewing thread.

Furthermore, with reference to FIG. 6 and FIG.5 (c), the detail of the structure of the ventilation sheet | seat 40 is demonstrated. FIG.5 (c) is principal part sectional drawing explaining the state which mounted | mounted the ridge | wedge support material which has an opening part of this invention on the roof. FIG. 6 is a development view of a ventilation sheet used for a building support member having an opening according to the present invention.
The ventilation sheet 40 further includes ventilation sheet bent portions 424, 426, 444, and 446. The ventilation sheet folding part 424 is a folding line located between the ventilation sheet main body part 41 and the ridge tile side opening installation part 42. The ventilation sheet folding part 426 is a folding line located between the ridge roof side opening installation part 42 and the multilayer waterproof sheet attachment part 43. The ventilation sheet folding part 444 is a folding line located between the multilayer waterproof sheet mounting part 43 and the intermediate opening installation part 44. The ventilation sheet folding part 446 is a folding line located between the intermediate opening installation part 44 and the sewing line part 46 of the ventilation sheet main body 41. The ventilation sheet bent portions 424, 426, 444 are mountain folded. On the other hand, the ventilation sheet bent portion 426 is a valley fold, and is easily sewn to the ventilation sheet main body portion 41.
In this embodiment, the edge of the ventilation sheet main body 41 on both sides in the lateral direction and the multilayer waterproof sheet mounting portion 43 are on the side of the ridge tile while the ridge support material having the opening of the present invention is mounted on the roof. The opening installation part 42 and the intermediate opening installation part 44 are connected by a double path. As another aspect, only one of the roof tile side opening installation part 42 and the intermediate opening installation part 44 may be used.

  FIG. 5: is a principal part expanded sectional view explaining the construction state of the ridge support material which has an opening part, (a) is principal part cross section explaining the accommodation state of the ridge support material which has an opening part near the ridge part of a roof. FIG. 4B is a cross-sectional view of a main part for explaining a working mode in the vicinity of the ridge of the ridge support material having an opening, and FIG. 5C is a cross-sectional view of a main part for explaining the effect of the ridge support having an opening. . As shown in FIG. 5 (b), it is a diagram showing that the skirt of the ridge support member having an opening is fitted inside the ridge by lowering the ridge of the ridge tree as an axis. As shown in FIG.5 (c), the building support material which has an opening part has interrupted rainwater, and the state which has let air pass is demonstrated.

  In FIG. 5A, the ridge 30 of the roof of the building to be constructed includes a purlin 31, a purlin support material 32, a roofing 33, a pier 34, a roof material 35, a parcel 36, a screw 37, and a wood slide 38. A field plate 39 is used. Further, the ridge 30 also has a hut back opening 301. Here, the purlin 31 is a cross that is attached to the top of the roof in the girder direction. The purlin support material 32 is preferably made of resin such as foamed polystyrene or a dedicated metal fitting, and includes a purlin contact portion 321 that supports the purlin 31 and a vertical support portion 322 that is provided and supported in a gap between the purlin 31 and the roofing 33. And an inverted Y-shaped contact portion 323 that contacts the roofing 33 that is inclined on both sides of the ridge. The roofing 33 is a sheet-like member having a waterproof effect, and an asphalt-based sheet is used when the roofing material 35 is a tile.

  The pier 34 is a member that is used when the roof tile 35 is stopped, and is a small-angle member sandwiched between the members in a direction orthogonal to the material for hooking the roof material 35. The roof material 35 is typically a tile or a slate, but a thick roof material such as a tile may be used. The ridge wrap 36 covers the purlin 31 to ensure waterproofness, and is made of the same material as a highly durable metal plate or roof material. The screw 37 is used to fix the ridge 36 to the purlin 31 and is made of a metal material having high rigidity and durability. The wood slide 38 is a tape-like thing with a width of about 20 mm installed vertically below the pier 34, and rainwater does not collect on the pier 34 and flows down. The field board 39 is a base plywood on the roof surface for fixing roof tiles and the like, and a plywood is stretched on a rafter and a roofing 33 is constructed thereon.

  Next, the installation procedure of the ridge support material having an opening in the vicinity of the ridge of the roof of the building to be constructed as described above will be described. FIG. 7 is a flowchart for explaining a method of installing a ridge support member having an opening provided with a transverse direction folded overlap portion (T) and a longitudinal direction folded overlap portion (L), and FIG. It is a perspective view explaining the case where the ridge support material which has an opening part is laid. First, as shown in FIGS. 5B and 5I, the longitudinal central portion of the ridge support material having an opening is installed on the upper side surface of the timber 31 in parallel with the ridge direction of the roof (step 100). Next, the ridge support member having the opening is temporarily fixed to the ridge tree 31 with staples (step 102). It is preferable that the staples or the like be hit at the center portion of the multilayer waterproof sheet 20 that is a contact portion with the purlin.

Next, as shown in FIGS. 5 (b), (ii), and (iii), the skirt portion in the lateral direction of the ridge support member having the opening is pushed down with the fold portion 206 for attaching the ridge wood in contact with the ridge wood 31 as a starting point ( Step 104). In this case, the extent to which the longitudinally folded overlapped portion L is pushed down is preferably set such that the skirt portion 24 fits in the ink marking position inside the ridge 36.
At the time of changing the shape of the ridge support member having the opening, the ventilation sheet 40 is in a state where the waterproof sheet opening 28 of the multilayer waterproof sheet 20 and the ridge tile side opening 422 and the intermediate opening 442 of the ventilation sheet 40 can be ventilated. The roof tile side opening installation part 42 and the intermediate opening installation part 44 are developed (step 106). Here, the vicinity of both ends of the ventilation sheet 40 attached to the multilayer waterproof sheet 20 is developed in a bag shape or a triangular shape. Along with this, the ridge tile side opening installation portion 42 and the intermediate opening installation portion 44 are each raised from the folded state, and the ridge tile side opening portion 422 and the intermediate opening portion 442 are waterproofed of the multilayer waterproof sheet 20. It becomes the shape which can ventilate with the seat opening part 28. FIG.

Therefore, in a state where the ridge support member having the opening is mounted on the ridge tree, ventilation performance is ensured by changing the shape of the ridge support member having the opening. In other words, the distance (L _412-43 ) between the sheet fixing portion 412 that contacts the purlin 31 and the multilayer waterproof sheet mounting portion 43 in the ventilation sheet 40 is _{equal to} the purlin contact waterproof sheet portion 29 and the ventilation sheet attaching portion in the multilayer waterproof sheet 20. 27 (L _29-27 ) with _respect to the distance 27. Therefore, when the skirt portion in the lateral direction of the ridge support member having the opening is pushed down with the fold portion 206 for attaching the timber contacting the purlin 31 as a starting point, the bent portions 424, 426, 444, and 446 effectively act. The end of the ventilation sheet main body 41, the roof tile side opening installation part 42, the multilayer waterproof sheet attachment part 43, the intermediate opening installation part 44, and the sewing line part 46 form a tubular vent passage having a square cross section. It is formed at the end of the portion 41 in the vicinity of the sewing line portion 46.

  Next, in order to attach the multilayer waterproof sheet 20 to the roof material 35, the release paper 26 of the adhesive tape 25 is peeled off, and a ridge support material having an opening is bonded to the mountain portion 352 of the roof material 35 in the longitudinal direction. (Step 108). Here, pushing down the longitudinal skirt of the ridge support material having the opening in step 104 against the purlin 31 and peeling the release paper 26 of the adhesive tape 25 are performed in parallel with the former and the latter in time. Alternatively, the former may be peeled off first, and then the former may be pushed down. When the bottom of the multilayer waterproof sheet is pushed down against the purlin 31, the work can be performed simultaneously by peeling down the release paper 26 of the adhesive tape 25, and the construction procedure can be simplified.

  On the other hand, the multilayer waterproof sheet is stretched in the longitudinal direction and bonded to the valley 354 of the roof material 35 so as to follow the valley shape (step 110). Adhesive tape 25 is preferably used for bonding the multilayer waterproof sheet and the peaks 352 and valleys 354 of the roof material 35. By attaching the skirt portion of the ridge support material having an opening to the roof material 35, the folded portion L in the longitudinal direction is developed (step 112). If the roof material 35 is a single tile, such as a Japanese tile, with a peak 352 and a valley 354, the edges of the peaks 352 and the valley 354 are aligned well in the installation of adjacent tiles. By doing so, a roof having a solid integrated structure with high ventilation performance and high resistance to rainwater can be formed (step 114). At this time, as shown in FIG. 8, the multilayer waterproof sheet needs to be adapted to the shape of the peak portion 352 and the valley portion 354 of the roof material 35 and to the shape of the purlin 31. Therefore, the laterally folded overlapped portion T of the multilayer waterproof sheet is mounted in a superposed state in the case of being flat like the purlin 31, and has an uneven shape like the mountain portion 352 or the valley portion 354 of the roof material 35. In this case, it is installed after changing from the overlapped state. In this way, the installation of the ridge support material having the opening is completed (step 116).

  According to the installation procedure of the ridge support member having the opening shown in FIG. 7, the position where the skirt in the longitudinal direction of the multilayer waterproof sheet is pushed down with respect to the ridge 31 as shown in FIG. It does not protrude from 36. As a result, when the ink is placed in a predetermined position in the ridge wrapping and the skirt does not reach the predetermined position, the folded portion L in the longitudinal direction can be extended in the lateral direction and bonded to the roofing material 35. Therefore, in the present embodiment, when the conventional multilayer waterproof sheet does not have the folded portion L in the longitudinal direction, the folding work of the ridge support member having the opening that is required when the multilayer waterproof sheet protrudes is performed in this embodiment. There is no need to bend the building support member having the opening.

  Even if the height of the purlin 31 is different depending on various buildings by extending the folded folded multi-layer waterproof sheet 203 in the transverse direction from the folded state, the longitudinal folded portion L is a single opening. The range that can be dealt with with the building support material that has Moreover, while the longitudinal direction folding superimposition part L can be used also as a water return part which exhibits the function similar to the stop door which prevents the infiltration of the inside of the roof of a building, the mounting width of the adhesive tape 25 is further expanded. Can also be used. Further, the roof tile side opening installation portion 42 of the ventilation sheet 40 also has the same function as the longitudinal folded portion L of the multilayer waterproof sheet 20. Although the ridge tile side opening 422 is provided in the ridge tile side opening installation part 42, drainage is easy because it is the bottom of the ventilation sheet 40, and the ridge tile side opening 422 is an individual opening compared to the waterproof sheet opening 28. Intrusion of rainwater is made difficult by reducing the shape of the part.

  As shown in FIG. 7 (step 100), the center portion in the longitudinal direction of the multilayer waterproof sheet is fixed to the upper side surface of the purlin 31 in the longitudinal direction, so that the operator uses FIG. Thus, both hem parts of a multilayer waterproof sheet can be affixed on the roofing material 35 without a gap. Moreover, the skirt part of the ridge support material which has an opening part on the outer side of the ridge package 36 part does not come out, and the design property is also favorable.

Then, 2nd Embodiment of the ridge support material which has an opening part of this invention is described.
FIGS. 9A and 9B are configuration diagrams illustrating a second embodiment of a ridge support material having an opening according to the present invention, in which FIG. 9A is a plan view seen from above, and FIG. FIG. 10 is a cross-sectional view in the transverse direction viewed from the b direction, FIG. 9C is a bottom view viewed from the lower surface, and FIG. 9D is a side view viewed from the dd direction in FIG. In FIG. 9, the same reference numerals are given to the same components as those in FIG.
The embodiment of FIG. 9 is common to the embodiment of FIG. 2 in that a multilayer waterproof sheet provided with only the transverse direction folded overlap portion (T) is used. The difference is that the overlapping portion (L) is omitted.

  FIG. 10: is a principal part expanded sectional view explaining the construction state of the ridge support material which has the opening part of the 2nd Embodiment of this invention, (a) is the ridge support material which has the opening part in the ridge part vicinity of a roof. The main part sectional drawing explaining the accommodation state of (2), (b) is principal part sectional drawing explaining the operation | work aspect in the ridge part vicinity of the ridge support material which has an opening part, (c) is the effect of the ridge support material which has an opening part It is principal part sectional drawing explaining these. 10 that have the same functions as those in FIG. 5 are denoted by the same reference numerals and description thereof is omitted.

Next, the installation procedure of the ridge support material having an opening in the vicinity of the ridge of the roof of the building to be constructed as described above will be described. FIG. 11 is a flowchart for explaining a method for installing a ridge support member having an opening provided with a transverse direction folded overlap portion (T). In addition, in FIG. 11, in the location which becomes the step similar to FIG. 7, only the outline is demonstrated here, using description of the corresponding step of FIG.
First, as shown in FIGS. 10B and 10I, the longitudinal central portion of the ridge support member having the opening is installed on the upper side surface of the timber 31 in parallel with the ridge direction of the roof (step 200). Next, the ridge support member having the opening is temporarily fixed to the ridge tree 31 with staples (step 202). It is preferable that the staples or the like be hit at the center portion of the multilayer waterproof sheet 20 that is a contact portion with the purlin.

  Next, as shown in FIGS. 10 (b), (ii), and (iii), the skirt portion in the lateral direction of the ridge support material having the opening is pushed down with the fold portion 206 for attaching the timber contacting the purlin 31 as a starting point ( Step 204). At the time of changing the shape of the ridge support member having the opening, the ventilation sheet 40 is in a state where the waterproof sheet opening 28 of the multilayer waterproof sheet 20 and the ridge tile side opening 422 and the intermediate opening 442 of the ventilation sheet 40 can be ventilated. The roof tile side opening installation part 42 and the intermediate opening installation part 44 are developed (step 206).

  Next, in order to attach the multilayer waterproof sheet 20 to the roof material 35, the release paper 26 of the adhesive tape 25 is peeled off, and a ridge support material having an opening is bonded to the mountain portion 352 of the roof material 35 in the longitudinal direction. (Step 208). On the other hand, the multilayer waterproof sheet is stretched in the longitudinal direction and adhered to the valley 354 of the roof material 35 so as to follow the valley shape (step 210). Adhesive tape 25 is preferably used for bonding the multilayer waterproof sheet and the peaks 352 and valleys 354 of the roof material 35. Then, the skirt portion of the ridge support material having the opening is attached to the roof material 35 (step 212). If the roof material 35 is a single tile, such as a Japanese tile, with a peak 352 and a valley 354, the edges of the peaks 352 and the valley 354 are aligned well in the installation of adjacent tiles. As a result, a strongly monolithic roof having high ventilation performance and high resistance to rainwater can be formed (step 214). In this way, the installation of the ridge support material having the opening is completed (step 216).

  According to the method for installing a ridge support member having an opening according to the present invention, since the multilayer waterproof sheet has both bending workability and durability, it is attached to the lower surface of the hem after the ridge support member having the opening is constructed. The adhesive strength of the adhesive tape 25 and the shape retention of the aluminum foil 53 greatly contribute to adhesion to the roofing material 35. For example, even if there is a decrease in the adhesive strength of the adhesive tape 25 after a lapse of time, the risk of peeling from the roofing material 35 is reduced due to the shape retaining property of the aluminum foil 53, and accordingly, the risk of water leakage is also reduced. As a result, it contributes to high durability of the building.

  Moreover, according to the ridge support material which has an opening part of this invention, it has the following characteristics with respect to the ridge tree 31 and the ridge tree support material 32. FIG. That is, the purlin support material 32 has a problem that it is poor in rigidity when it is made of a rust-proof metal as in the prior art, and is swayed or bent due to wind or snow. However, as the purlin support material, the resin ridge support material 32 having the purlin contact portion 321, the vertical support portion 322, and the inverted Y-shaped contact portion 323 is used to ensure robustness and fall down even when used for a long time. Can be prevented. Further, since the ridge support member having the opening also has the tensile strength of the multilayer waterproof sheet, even if the purlin 31 or the ridge support member 32 is about to fall down, the shape retention of the multilayer waterproof sheet and the adhesive tape 25 are adhered. The posture is maintained by force.

  As mentioned above, although embodiment of this invention was described with reference to an accompanying drawing, this invention is not limited to this embodiment, Various forms in the technical scope grasped | ascertained from description of a claim Can be changed. For example, in the above embodiment, the case where the roof waterproof sheet is also used as an application of the building support material having the opening is illustrated, but the present invention is not limited to this, and rainwater is applied to the building. It can be used as a rain-proof seal material at places where it can easily enter.

10, 20 Multilayer waterproof sheet 201 Upper multilayer waterproof sheet portion 202 Upper folded portion 203 Folded multilayer waterproof sheet portion 204 Lower folded portion 205 Lower multilayer waterproof sheet portion 206 Folding crease L. Longitudinal folding part (Length direction)
T. T. et al. Transverse direction
24 Hem (roof material mounting part)
25 Adhesive tape (roof mounting part)
27 Ventilation sheet pasting part 28 Waterproof sheet opening 29 Purlin abutment waterproof sheet 30 Building part 301 Hut back opening 31 Purlin 32 Purlin support material 35 Roofing material (tile)
36 Roofing material (building wrap)
39 Field plate (base plate)
40 Ventilation sheet 41 Ventilation sheet main body part 412 Purlin side contact part 42 Building tile side opening installation part 422 Building tile side opening part (ventilation sheet opening part)
424, 426 Ventilation sheet bent portion 43 Multilayer waterproof sheet mounting portion 44 Intermediate opening installation portion 442 Intermediate opening (ventilation sheet opening)
444, 446 Ventilation sheet bent portion 50 Multilayer waterproof sheet 51 Baking resin-based paint 52 Aluminum foil 53 Adhesive (polyester-based adhesive, polyether-based adhesive)
54 Synthetic resin film (synthetic resin sheet)

Claims (13)

A multilayer waterproof sheet having at least one of a laminated structure including an aluminum foil and a synthetic resin film, or a laminated structure including an elastomer sheet and an aluminum foil,
A transverse direction folded overlapping portion provided over the transverse direction orthogonal to the longitudinal direction of the multilayer waterproof sheet;
A waterproof sheet opening formed on the purlin abutment portion side of the multilayer waterproof sheet than the ventilation sheet attaching portion; and
The multilayer tarpaulin having
A ventilation sheet in which both end portions are attached along the longitudinal direction of the multilayer waterproof sheet in a state in which ventilation is possible with the waterproof sheet opening of the multilayer waterproof sheet, the multilayer waterproof sheet mounting portion of the ventilation sheet and the purlin side The ventilation sheet having a ventilation sheet opening provided between the contact part, and
A ridge support material having an opening. In the multilayer waterproof sheet according to claim 1,
The synthetic resin film has heat shrinkability, and the synthetic resin film is laminated on one surface side of the aluminum foil,
It is provided along the longitudinal direction of the multilayer waterproof sheet, and has a longitudinal folded portion provided between the ventilation sheet attaching part and the roof material attaching part of the multilayer waterproof sheet.
The ridge support material which has an opening part of Claim 1 characterized by the above-mentioned. In the multilayer waterproof sheet according to claim 1,
The elastomer sheet has tear resistance and heat shrinkability, and the elastomer sheet is laminated on one surface side of the aluminum foil,
It is provided along the longitudinal direction of the multilayer waterproof sheet, and has a longitudinal folded portion provided between the ventilation sheet attaching part and the roof material attaching part of the multilayer waterproof sheet.
The ridge support material which has an opening part of Claim 1 characterized by the above-mentioned.   The multi-layered waterproof sheet according to claim 2 or 3, wherein the other surface side of the aluminum foil is coated with a resin-based paint. Wood.   The state in which the waterproof sheet opening of the multilayer waterproof sheet and the ventilation sheet opening of the ventilation sheet can ventilate is such that the ratio of the smaller opening area of the waterproof sheet opening and the ventilation sheet opening to the ceiling area is 1 / It is 1600 or more, The ridge support material which has an opening part in any one of Claims 1 thru | or 4 characterized by the above-mentioned. In the ridge support material which has an opening part in any one of Claims 1 thru | or 5,
The ventilation sheet is
A ventilation sheet body having a purlin-side contact portion;
A multilayer waterproof sheet mounting portion provided on the ventilation sheet body, and
A roof tile side opening installation part provided between the ventilation sheet main body part and the multilayer waterproof sheet mounting part, the roof tile side opening installation part having a roof tile side opening as the ventilation sheet opening,
A ridge support material having an opening. The ventilation sheet according to claim 6,
In addition to the ridge tile side opening installation portion having the ridge tile side opening portion, further, an intermediate opening installation portion having an intermediate opening portion is provided between the ventilation sheet main body portion and the multilayer waterproof sheet attachment portion. A ridge support with an opening.   8. The ridge having an opening according to claim 6, wherein the ventilation sheet further has a portion in contact with the purlin of the ventilation sheet main body fixed to the multilayer waterproof sheet in a longitudinal direction. Support material.   The ridge support member having an opening according to any one of claims 6 to 8, wherein the ridge support member having the opening is attached to the ridge tree, and the seat fixing portion that contacts the ridge tree in the ventilation sheet. And the multilayer tarpaulin mounting portion are configured to have an opening that is substantially the same as the spacing between the purlin-contacting waterproof sheet portion and the ventilation sheet mounting portion in the multilayer tarpaulin. Support material.   The ridge support material having an opening according to claim 9, wherein the ventilation sheet is provided with a bent portion of the ventilation sheet between the ventilation sheet main body and the ridge roof side opening installation portion. In the state where the multilayer waterproof sheet and the ventilation sheet are in contact with each other, the ventilation sheet is folded at the bent portion of the ventilation sheet, and the ventilation sheet is unfolded with respect to the multilayer waterproof sheet. The ridge support material having an opening according to claim 10, wherein the ventilation sheet is in a state of being developed at the bent portion of the ventilation sheet. It is a usage method of a ridge support material which has an opening part provided with the transverse direction folding superposition part according to any one of claims 1 to 11,
Placing the purlin contact portion of the multilayer waterproof sheet on the top surface of the purlin placed on the purlin support;
The ventilation sheet is in a state in which the waterproof sheet opening of the multilayer waterproof sheet and the ventilation sheet opening of the ventilation sheet can be ventilated by pushing down the bottom of the multilayer waterproof sheet with the ventilation sheet in contact with the purlin as a starting point. Expanding the ventilation sheet opening of
Attaching the skirt of the multilayer waterproof sheet to the roof material;
A method for using a ridge support material having an opening. It is a usage method of a ridge support material which has an opening part provided with a transverse direction folding superposition part and a longitudinal direction folding superposition part according to any one of claims 2 to 11,
Placing the purlin contact portion of the multilayer waterproof sheet on the top surface of the purlin placed on the purlin support;
The ventilation sheet is in a state in which the waterproof sheet opening of the multilayer waterproof sheet and the ventilation sheet opening of the ventilation sheet can be ventilated by pushing down the bottom of the multilayer waterproof sheet with the ventilation sheet in contact with the purlin as a starting point. Expanding the ventilation sheet opening of
Attaching the skirt of the multilayer waterproof sheet to a roofing material, and developing the longitudinally folded portion;
A method for using a ridge support material having an opening.