JP4855546B1 - Roof base material - Google Patents

Abstract

An object of the present invention is to provide a roof base material which prevents corrosion of a field board by ensuring the breathability of water vapor while preventing the diffusion of rainwater in the lateral direction due to side running, as well as weather resistance.
A roof base material formed by integrally covering one or both sides of a sheet-like base material made of a soft synthetic resin with a covering paper, and is provided on the back side or both sides of the sheet-like base material. Vertical beam-like projections extending in the direction between the eaves are formed to extend, the vertical beam-like projections are arranged in parallel at equal intervals, and a ventilation groove is formed on the surface of the vertical beam-like projections. The ventilation grooves are arranged in a row at regular intervals so as not to be adjacent to the ventilation grooves of the vertical beam-like projections provided next to each other, and the depth of the ventilation grooves is a vertical beam-like projection. A configuration is adopted in which a portion between the surface of the portion and the surface of the sheet-like base material is disposed at a position that secures a lateral running prevention region from the ventilation groove to the surface of the sheet-like base material.
[Selection] Figure 1

Description

  The present invention relates to a roof base material used when roofing tiles, and more specifically, by forming a space region with a predetermined interval in the vertical direction between the roof base material and the field board, the weather resistance is originally improved. In addition to preventing rainwater from spreading laterally due to side running, water vapor is ensured to be breathable and actively diffused laterally to prevent corrosion of the field plate. The present invention relates to a roof base material having anti-slip properties at the same time.

  Moisture intrusion on tiled roofs is not only due to cracking or slipping of tiles, but also various factors such as blowing up from the eaves, rainwater invading from defective places such as wall hits, valleys or sleeves. is there. When the invading water runs across the cross rail, water is widely diffused on the base plate, causing corrosion, which is a problem. Further, since water may be generated from the inside like condensation, drainage is also required. The drainage in the tiled roof structure is based on the basic concept of the roof slope, and it can be said that high waterproofness and high drainage as substantial weather resistance have been sought in the roof base material. In recent years, various technologies have been proposed to meet the demand, and particularly the development of recent asphalt roofing and polymer roofing is remarkable. At the same time, in order to ensure the safety of workers during construction of roof members, a number of technologies for roof base materials of non-fallless structures having high slip resistance by providing anti-slip projections on the surface have been proposed. .

  However, the adverse effects of using asphalt roofing and polymer roofing cannot be ignored. In other words, asphalt and polymer roofings are not permeable, and on the one hand they are highly waterproof, but on the other hand, they tend to condense when the temperature difference between the indoor and the outdoor becomes large. Since the ground plane is in contact, the water drainage is poor, and further, there is a problem in that water vapor generated between the roof base material and the ground plane cannot be discharged, and the ground plane is corroded instead.

  Therefore, not only the drainage of moisture and water vapor generated in the gap between the roof base material and the tile, but also water that has entered the gap area between the base plate and the roof base material and water vapor generated from condensation stay. There is a need for technology that can discharge without causing any problems. However, if a gap portion for air permeability is easily provided in the base plate and the roof base material, rainwater can easily enter from the gap during storms, etc., and the rainwater is diffused over a wide area of the base plate by sideways running. It will also be a thing. In view of this, diffusion of rainwater due to lateral running from the lateral direction is prevented, but there is a demand for a technique capable of positively diffusing water vapor while ensuring lateral air permeability.

  In addition, sound insulation and heat insulation are generally entrusted to building materials such as floors, under floors, ceilings, or walls, and to building structures such as double glass or multi-layer spaces in walls. The material has not been required to have much effect on sound insulation and heat insulation. Here, there are “air sounds” that travel through the air and reach your ears, and “solid sounds” that allow you to hear footsteps and falling sounds from the floor and walls. Considered. On the other hand, it is only necessary to consider only the air sound for the roof where fixed sound is difficult to affect. Generally, there is little noise from above, so the necessity of obtaining a sound insulation effect on the roof base material was low as a practical problem. I can say that. In addition, in the tiled roof, it can be said that the tile itself has a high heat insulating effect because the sound itself is a sound-absorbing material to reduce rain noise and the tile has a low thermal conductivity.

  However, the situation has changed in recent years. In other words, noise problems due to aircraft, the existence of high-rise houses adjacent to each other, houses under elevated highways, and other noise problems caused by “air noise” transmitted from above the roof are also increasing. In addition, there is a need to contribute to higher efficiency of air conditioning due to the recent global warming. From the 2011 off the Pacific coast of Tohoku Earthquake that occurred on March 11, 2011, the Japanese people became more aware of power saving. It is anticipated that any of these will require a high thermal insulation effect.

  In view of such a problem, various techniques have been conventionally proposed. For example, in order to solve the drainage problem, there has been proposed a roof base material in which flat projections are provided on the entire back surface of a sheet (see Patent Document 1). However, such a technique has a problem in that it cannot diffuse rainwater due to lateral running from the lateral direction and diffuses, and the ratio of the area occupied by the flat protrusions is large. The amount of moisture that permeates into the gap with the ground plane is large, and such moisture cannot be discharged, so the problem remains that the ground plane is corroded quickly.

  In addition, in order to solve the problem of drainage, a roof waterproof sheet material in which protrusions parallel to the surface of the waterproof sheet member and a large number of protrusions are provided and a large number of recesses are provided on the back surface has also been proposed. (See Patent Document 2). However, this technology can prevent rainwater from entering due to lateral running of the water on the surface due to the parallel ridges, but it cannot escape the moisture generated in the recesses on the back side due to condensation, and corrodes the base plate quickly. The problem remains.

  In addition, in order to solve the problem of rainproof properties during rainfall, the tile roof waterproof sheet has a number of anti-slip micro-projections formed on the surface, and the surface is flat and has a width larger than the width of the tucker needle. The vertical strips having the same height as the anti-slip micro-projections are formed at regular intervals, the front and back surfaces are flat on the side edges, have the same height as the vertical strips, and the overlapping portions of adjacent sheets laid There has been proposed a “tile roof waterproof sheet” in which an edge band portion is formed (Patent Document 3). However, such technology is liable to cause condensation when the temperature difference between the outside and the room increases, and the tile roofing waterproof sheet and the field board are in contact with each other, resulting in poor drainage, and between the roof base sheet material and the field board. The problem remains that the base plate is corroded without being able to discharge the moisture generated in the water.

  Moreover, the roof base material by the present applicant has already been proposed in order to solve the problem of air permeability. The technology is such that paper is integrally bonded to both the upper and lower surfaces of a sheet-like base material of a soft synthetic resin, and at least a part thereof has a ridge of a certain height extending linearly continuously in one direction. In the roof underlaying material that is integrally formed at a predetermined interval, a “roofing roofing material” is proposed in which a plurality of cuts for cutting the protrusions at predetermined lengths are formed in the longitudinal direction of the protrusions. It is a known technique (Patent Document 4). However, such technology is liable to cause condensation when the temperature difference between the outside and the room increases, and the tile roofing waterproof sheet and the field board are in contact with each other, resulting in poor drainage, and between the roof base sheet material and the field board. The problem remains that the base plate is corroded without being able to discharge the moisture generated in the water.

  Further, a roof base material by the present applicant has already been proposed in order to solve the problem of slip resistance. Such a technique is formed by integrally joining paper on the upper and lower surfaces of the sheet-like base material of the soft synthetic resin, and in the roof base material laid on the roof path plate, on the upper surface of the sheet-like base material, The lower part has a large diameter and the upper part has a small diameter, and a number of anti-slip protrusions that protrude in two steps by a predetermined height are formed integrally, and there are a plurality of these anti-slip protrusions in a predetermined unit area. It is a “roof base material” that is arranged so as to be isotropic on the entire surface (Patent Document 5). This technology employs a non-fallless structure that exhibits extremely high slip resistance. However, such a technique can prevent the operator's feet from slipping during the construction of the tile roof, but cannot prevent the spread of rainwater intrusion due to side running, and the roof base material and the field. There remains a problem that the base plate is corroded without being able to discharge moisture generated by condensation between the plates.

  In addition, in order to solve the problems of air permeability and anti-slip properties, the present applicant has already proposed a roof underlaying material. The technology is such that paper is integrally joined to both the upper and lower surfaces of a sheet-like base material of the roof base material soft synthetic resin, and one surface of the sheet-like base material has a substantially constant height extending linearly in one direction. And a plurality of gap-forming projections that protrude by a predetermined height are integrally formed on the opposite surface of the sheet-like base material. (Patent Document 6). According to such a technique, since a space is formed between the roof underlaying material and the field board, drainage in the vertical direction is improved, and corrosion of the field board can be prevented. Moreover, the thing of the structure which integrally forms many anti-slip | projection parts on an upper surface also has the effect of becoming a slip prevention of an operator's leg at the time of tile roof construction. However, since the water vapor generated in the gap forming projection area cannot escape in the lateral direction and cannot be diffused to the side area, it cannot be said to be sufficient as a function to prevent corrosion of the base plate. There were still problems.

Japanese Utility Model Full Text Sho 50-124110 Japanese Utility Model Publication No. 64-026427 JP 2004-156280 A Utility Model Registration No. 3074718 Japanese Patent No. 2741655 JP 2005-16109 A Japanese Patent Laid-Open No. 7-119263

  In view of the above problems, the present invention provides a roof base material used for roof tile roofing, as well as weather resistance, as well as ensuring the breathability of water vapor while preventing the spread of rainwater in the lateral direction due to side running. Therefore, it is intended to provide a roof base material that is actively diffused in the lateral direction to prevent corrosion of the base plate, and further has sound insulation, heat insulation, and slip resistance.

  The present invention is made in order to achieve the above object, and is a roof base material formed by integrally covering a coated paper on one side or both sides of a sheet-like base material of a soft synthetic resin, On the back surface or both surfaces of the sheet-like substrate, vertical beam-like projections extending in the vertical direction between the ridges are formed, and the vertical beam-like projections are arranged in parallel at equal intervals, Ventilation grooves are provided on the surface of the vertical beam-like projections, and the ventilation grooves are alternately arranged in a row with a certain interval so as not to be adjacent to the ventilation grooves of the adjacent vertical beam-like projections. The depth of the ventilation groove is between the surface of the vertical beam-shaped protrusion and the surface of the sheet-like substrate, and is arranged at a position to secure a lateral running prevention region from the ventilation groove to the surface of the sheet-like substrate. The configuration to be installed was adopted.

  In the present invention, the back side of the sheet-like base material of the soft synthetic resin or the coated paper is coated so as to be encapsulated with a desiccant, or the coated paper contains a desiccant. It is also possible to adopt a configuration that is a coated paper.

  Further, the present invention provides an anti-slip protrusion that protrudes to a height that does not exceed the height of the vertical beam-like projections in the surface region of the sheet-like base material between the vertical beam-like projections that are continuously provided. It is also possible to adopt a configuration in which a large number are arranged at isotropic intervals.

  Moreover, this invention has a connection part in the up-and-down edge part of the said sheet-like base material, and the shape of this connection part is the upper surface of a sheet-like base material on one side, and the other side is a sheet-like base material. From the back side, each is a step shape that is one-half the thickness of the sheet-like base material, and when connecting the roof base material in combination with each other and overlapping, the thickness of the sheet-like base material and The structure which becomes can also be employ | adopted.

  In the present invention, it is also effective to adopt a configuration in which the depth of the ventilation groove on the back surface side is a fine groove in the range of 0.1 mm to 1 mm from the surface of the back surface side vertical projection.

  According to the roof base material according to the present invention, it is possible to use asphalt roofing or polymer roofing by providing a ventilation groove while preventing diffusion of lateral running of rainwater by providing a vertical beam-like projection. It exhibits an excellent effect that can solve the adverse effect, that is, the problem of corroding the base plate quickly due to the difficulty of draining or exhausting moisture generated by condensation due to the material properties having no permeability. As for the lateral running on the surface of the sheet-like base material, the depth of the ventilation groove secures a lateral running prevention area provided between the surface of the vertical beam-like projection and the surface of the sheet-like base material. Unlike the conventional ventilation groove, there is an excellent effect that the diffusion to the region between the adjacent vertical beam-like projections can be largely prevented.

  Further, according to the roof base material according to the present invention, a space portion is formed between the base plate and the sheet-like base material by the vertical beam-like projections on the back surface, so that the roof has excellent sound insulation and heat insulation properties. It has the effect of becoming a base material.

  Moreover, according to the roof base material which concerns on this invention of Claim 2, it adheres so that desiccants, such as a silica gel, may encapsulate in the back surface side of the sheet-like base material of the said soft synthetic resin, or the said covering paper. Since the coated paper is a coated paper containing a desiccant, water is applied to the desiccant such as silica gel located at a predetermined distance from the base plate to which water droplets generated in the space layer region adhere. Is adsorbed, the moisture is released by raising the outside air temperature, and the water vapor is diffused and released through the ventilation groove, so that the base plate can be dried.

  Moreover, according to the roof base material which concerns on this invention of Claim 3, the height of the said vertical beam-like projection part is set in the surface area | region of the sheet-like base material between the vertical beam-like projection parts arranged continuously. By simultaneously providing a non-slip projection protruding at a height not exceeding, a non-fallless structure that exhibits extremely high anti-slip properties is obtained, and an excellent effect is achieved in that safety during construction is achieved.

   Moreover, according to the roof base material which concerns on this invention of Claim 4, since it has the structure used as the thickness of a sheet-like base material, if a connection part is combined and overlapped, a level | step difference will be in a connection part. Since it does not occur, the crosspieces are not nailed in an unstable state, and it is possible to provide an excellent effect that the crosspieces can always be provided on a flat surface.

  In addition, for example, when adopting a configuration in which the depth of the ventilation groove is a fine groove within the range of 0.1 mm to 1 mm from the surface of the vertical beam-like protrusion, moisture as a fluid is not permeated, but water vapor is not permeated. Because it can permeate, even if rainwater flows between the roof base material and the field plate, it can prevent the rainwater from spreading due to side running, and it ensures positive ventilation with water vapor. In particular, it is possible to obtain an excellent effect that the base plate can be prevented from corroding by being diffused laterally.

It is explanatory drawing which shows 1st embodiment of the roof base material which concerns on this invention. It is explanatory drawing which shows 2nd embodiment of the roof base material which concerns on this invention. It is explanatory drawing which shows 3rd embodiment of the roof base material which concerns on this invention. It is sectional drawing which shows the structure of the roof base material which concerns on this invention. It is ventilation groove explanatory drawing which concerns on this invention. It is explanatory drawing which shows the effect of the roof base material which concerns on this invention. It is explanatory drawing which shows 4th embodiment of the roof base material which concerns on this invention. It is explanatory drawing which shows 5th embodiment of the roof base material which concerns on this invention.

  In the present invention, when the roof base material 10 according to the invention is laid on the base plate N, the region R1 of the space part between the adjacent vertical beam-like projections 21 is provided by the vertical beam-like projections 21 provided continuously. The region R1 and the side running prevention region R2 are formed, and the greatest feature is that a ventilation groove 22 for adjusting the outflow amount of water droplets, rainwater Y and water vapor S in the region is provided. DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 to 3 are explanatory views showing first to third embodiments of the roof base material 10 according to the present invention. As shown in FIG. 1, the first embodiment is a configuration in which vertical beam-like protrusions 21 are formed only on the back surface U side of the sheet-like base material 20, and the second embodiment is as shown in FIG. 2. This is a configuration in which vertical beam-like projections 21 are formed on both surfaces of the sheet-like substrate 20, and the third embodiment has a non-slip projection 40 on the surface W in addition to the above-described configuration as shown in FIG. A plurality of configurations are adopted.

  FIG. 4 is a cross-sectional view showing the configuration of the roof base material 10 according to the present invention. 4A is a cross-sectional view taken along the line AA in the first embodiment, and the right-side view shows a longitudinal section of the vertical beam-like protrusion 21 in the embodiment. The left view of FIG. 4B is a BB cross-sectional view in the second embodiment, and the right view shows a longitudinal cross section of the vertical beam-like projection 21 in the form. The left figure of FIG.4 (c) is CC sectional drawing in 3rd embodiment, and the right figure has shown the longitudinal direction cross section of the vertical beam-like projection part 21 in this form. In addition, FIG. 4 is for clarifying each arrangement | positioning relationship of the vertical beam-like projection part 21, the ventilation groove 22, and the anti-slip projection part 40, and the scale of each part on illustration is not unified.

  FIG. 5 is an explanatory diagram of the ventilation groove 22 according to the present invention. FIG. 5A shows the ventilation groove 22 in the case of the first embodiment, and P1 of the ventilation groove 22 is about 30 mm to 150 mm and the ventilation groove depth. The height H1 is about 1 mm to 3 mm, and the groove length B2 is about 2 mm to 8 mm. FIG. 5B shows a case where the minute ventilation groove 23 is used as the ventilation groove for ensuring the air permeability in the case of the first embodiment. The minute groove length B3 of the minute ventilation grooves 23 provided continuously is in the range of about 0.1 mm to 1 mm, the depth is 0.1 mm to 1 mm, which is the same as the diameter of the minute groove B3, and the pitch P2 is 5 mm. By setting it to about ˜100 mm, it is difficult for water droplets to permeate, and the water vapor S permeates to the adjacent region R1. Note that FIG. 5B is for clarifying the relationship such as the arrangement of the minute ventilation grooves 23 and is not the same scale in relation to the height H2 of the back side vertical projection. Moreover, although the ventilation groove | channel shown to Fig.5 (a) is a rectangle, the shape of the ventilation groove | channel 22 is not limited to the description which concerns, It shall change selectively with the shape which is easy to process by roll forming. .

  The roof base material 10 is formed by integrally bonding the covering paper 30 to one or both sides of the sheet-like base material 20 of the soft synthetic resin, and the overall dimensions are, for example, about 1 to 2 m in width and 21 m in length. It is formed of a 42 m roll-shaped sheet member or the like.

  The sheet-like base material 20 is a core material of the roof base material 10, and is formed of a roll-like sheet member having a thickness of about 0.5 mm to 1.5 mm using a soft synthetic resin member such as polyethylene.

  The coated paper 30 is a surface protective paper that covers one or both sides of the sheet-like base material 20, is subjected to waterproofing or water-repellent finishing, and is made of, for example, kraft paper, and is integrated with the surface of the sheet-like base 20. Are joined together. However, the coated paper 30 containing the desiccant 60 may be used.

  The vertical beam-like protrusion 21 is a protrusion formed integrally with the sheet-like base material 20 by roll forming or the like, and when the direction connecting the ridge and the eave is the vertical direction (hereinafter simply referred to as the vertical direction, The direction perpendicular to this is simply referred to as the lateral direction), and is formed by continuously extending in the longitudinal direction. The vertical beam-like projection width B1 is about 2 mm to 8 mm, the back side vertical beam-like projection height H2 is about 3 mm to 8 mm, and the adjacent pitch P3 of the adjacent vertical beam projections 21 is about 50 mm to 150 mm. In addition, ventilation grooves 22 are continuously provided at the end sides of the vertical beam-like protrusions 21 at a predetermined pitch P1 of 30 mm to 150 mm.

  The ventilation groove 22 has a ventilation groove depth H1 of about 1 mm to 3 mm, a groove length B2 of about 2 mm to 8 mm, and the positional relationship with the ventilation groove 22 in the vertical beam-like protrusions 21 provided next to each other is alternated. It is provided so as to be phased. Note that the shape is not limited to the rectangular shape shown in the figure, and the opening area opened on the side wall of the vertical beam-like projection portion 21 is equal, and the size of the height of the vertical beam-like projection portion H2 on the back surface side should be approximately the same. .

  In order to further enhance the side running prevention effect while ensuring the air permeability, when the minute ventilation groove 23 as shown in FIG. 5B is adopted, that is, the minute ventilation groove gap 21 is in the range of 0.1 mm to 1 mm. In the case of adopting the configuration of the inner micro groove depth B3, it is difficult to permeate moisture as a fluid, but since water vapor can permeate, if rainwater flows between the roof base material and the base plate Even so, it is possible to greatly prevent the spread of rainwater due to side running, and to ensure the breathability of water vapor and actively diffuse it laterally to prevent corrosion of the ground plate. There is an effect.

  In the case of the second embodiment shown in FIG. 2, it is a configuration in which vertical beam-like projections 21 are formed on both the front surface W and the back surface U of the sheet-like substrate 20, and the configuration on the back surface U side is the first example. It is the same. The surface W is provided with a vertical beam-like projection 21, and the vertical beam-like projection 21 is integrally formed with the sheet-like base material 20 and the vertical beam-like projection 21 on the back surface U side by roll forming or the like. It is a protrusion and is formed extending continuously in the vertical direction. The vertical beam-like projection width B1 is about 2 mm to 8 mm, the surface W side vertical beam-like projection height H4 is about 3 mm to 8 mm, and the surface side ventilation groove depth H5 is about 1 mm to 5 mm. They are continuously provided at a predetermined pitch P1 of 150 mm.

  However, it is not particularly necessary to have the same dimensions as the vertical beam-like projections 21 on the back surface U side. For example, as shown in FIG. 3E, the pitch P1 of the ventilation grooves 22 on the back surface U side is 150 mm. It is also effective to improve the anti-slip property by making the pitch P1 of the ventilation groove 22 on the surface W side as narrow as 30 mm and using the step portion of the ventilation groove 22 to easily catch on the shoe sole Z of the operator. It is. Similarly, the adjacent pitch P3 of the vertical beam-like projections 21 on the front surface W side may be different from P3 on the back surface U side.

  Note that if the surface side ventilation groove depth H5 and the groove length B2 are too large, the ability to prevent rainwater Y due to side running decreases, so the dimension should be determined in relation to the roof slope K. desirable. In other words, if the slope is gentle, the anti-slip property is not so much required, but since the drainage is inferior, the size is shifted to a direction that enhances the side running prevention function. Since it is required, it shifts to dimensions that emphasize slip resistance.

  FIG. 6 is an explanatory view showing the effect of the roof base material 10 according to the present invention. First, the relationship between the area | region R1 by the side of the back surface U and the ventilation groove | channel 22 is demonstrated. When the roof base material 10 according to the present invention is laid on the base plate N, the space R region R <b> 1 is formed between the adjacent vertical beam-like protrusions 21 by the vertical beam-like protrusions 21 connected to the back surface U side. Is made. Due to the presence of the intermediate layer of the region R1, a sudden temperature difference between the room and the outdoors is avoided, and the region R1 becomes an intermediate temperature layer and is unlikely to condense. Further, the water droplets generated by the condensation are drained downward while being guided by the side wall of the vertical beam-like projection portion 21, and become a wall portion that prevents diffusion to the base plate due to lateral running. In addition, since the amount of water generated in the region R1 is not so large as compared with the front surface W side, the height H2 of the back-side vertical rail-like protrusion is about 3 mm to 8 mm, and the pitch P1 of the ventilation grooves 22 is 30 mm to If it is 150 mm, the inside of the region R1 overflows due to the generation of water droplets due to condensation, and this hardly flows out to the adjacent region R1, and the diffusion to the base plate N due to side running on the back U side is not so much is not a problem. Since it can be calculated by calculation, a case where the following conditions are taken as an example will be described.

In the case of a tiled roof, a slope of 4 inches or more is required. Therefore, for example, the length of the vertical beam-like protrusion 21 is 550 mm from the eaves in a 4 inch slope (about 22 degrees) where water drainage is the worst. When rainwater collects up to 204mm, the height from the eaves is 204mm. The calculation is performed by further considering the following conditions.
Back side vertical beam-like protrusion height H2 is 8mm,
The groove length B2 of the ventilation groove 22 is 8 mm,
The pitch P1 of the ventilation grooves 22 is 100 mm,
The number of ventilation grooves 22 on one side is five,
The adjacent pitch P3 of the vertical beam projections 21 on the back U side is 150 mm,
The height h1 from the water surface to the ventilation groove 22 on one side is about 37 mm, h2 is about 75 mm,
Flow velocity v1, v2, v3,... Corresponding to heights h1, h2, h3,.
The area R1 cross-sectional area A of the eaves part is 150 mm × 8 mm,
When the cross-sectional area a of the ventilation groove 22 is 8 mm × 3 mm and both have the same area, the following formula is used:

Flow rate Q = Cross sectional area A × Flow velocity v (Equation 1)
Flow velocity v = square root of (2 × gravity acceleration g × height h) (Expression 2)

If it calculates on said conditions, the total outflow amount of the rainwater Y which flows out out of the five one-side ventilation grooves 22 is only about 7% with respect to the flow volume of the rainwater Y which flows out from the eaves part used as a discharge port. Such a numerical value is a position where rainwater Y does not collect from the eaves to the ventilation groove 22 located at a height of 18.5 mm from the eaves in the longitudinal direction 50 mm of the vertical beam-like projections 21 from the eaves. Therefore, as long as the eaves portion is not blocked, it does not diffuse further from the adjacent region R1 to the adjacent region R1. Furthermore, even if a strong wind from the side during a heavy rain such as a typhoon does not run sideways, and there is a blow-up from the eave to the building, there is very little outflow to the adjacent region R1.

  A more important problem than the above is that water droplets attached due to condensation evaporate to become water vapor S inside the region R1. That is, asphalt roofing and polymer roofing are not permeable, and on the one hand, they exhibit high waterproofness, but on the other hand, they tend to form condensation when the temperature difference between the indoor and the outdoor becomes large. Thus, it is difficult for water droplets to be discharged downward on a roof having a small inclination angle (about 22 degrees). Therefore, it is a problem that the base plate N is corroded without discharging the water vapor S generated in the gap between the roof base material 10 and the base plate N.

  However, according to the present invention, due to the presence of the space layer in the region R1, it is clear that condensation does not easily occur in comparison with conventional products or conventional prior art. In addition, even when water droplets adhere to the surface of the base plate N due to condensation and then become water vapor S, the water vapor S has a structure that is easily diffused through the ventilation grooves 22 or the minute ventilation grooves 23.

  Next, the relationship between the lateral running prevention region R2 on the surface W side and the ventilation groove 22 will be described. When the roof base material 10 according to the second embodiment of the present invention is laid on the base plate N, the vertical beam-like projections 21 continuously provided on the surface W side are provided between the adjacent vertical beam-like projections 21. Side running prevention region R2 is created. The roof base material formed by extending the vertical beam-like projections in the vertical direction has already been sold under the trade name “Champion Standard” by the applicant “Champion Co., Ltd.” (however, And does not have a ventilation groove as in the present invention). In addition, a “waterproof permeation roof sheet” in which horizontal beam-like projections are extended in the horizontal direction, drainage channels are arranged at predetermined intervals, and the drainage channels are provided in phase with the drainage channels adjacent to each other. A technique (however, the drainage channel is open to the surface of the sheet so as to divide the horizontal projections) has also been proposed (see Patent Document 6). Therefore, it can be said that it is a publicly known technique to extend vertical or horizontal beam-like projections on the surface of the roof base material. However, in the present invention, the vertical groove-like protrusion 21 on the surface W side is also provided with a ventilation groove 22, and the lateral ventilation groove depth H5 is set within a predetermined range (about 1 mm to 5 mm) to prevent side running. A lateral running prevention region R2 having a cross section of the product of the height H3 and the adjacent pitch P3 is spatially secured. Therefore, if the rain amount exceeding the side running prevention height H3 does not enter, water is not transmitted to the adjacent side running prevention region R2, and the wide area corrosion of the base plate N can be effectively prevented.

  As shown in FIG. 3 (e), the ventilation groove on the surface W side has a structure that also exhibits an anti-slip function during the operation of the roof tile and contributes to the improvement of the anti-slip property.

  In the case of the third embodiment shown in FIG. 3A, in addition to the above-described configuration, a configuration in which a plurality of anti-slip protrusions 40 are further provided on the surface W side is employed. FIG. 3B to FIG. 3E illustrate the form of the anti-slip protrusion 40. The anti-slip protrusions 40 are configured such that a large number of anti-slip protrusions 40 protruding at a height not exceeding the front-side vertical beam-like protrusion height H4 are arranged at isotropic intervals on the surface W of the sheet-like substrate 20. . Here, the shape, dimensions, arrangement configuration, and number of the anti-slip protrusions 40 are not particularly limited, but the anti-slip effect is sufficiently exerted in relation to the shoe sole Z of the operator. It is desirable to have a shape, size, arrangement configuration, and number that enable the above.

  For example, if the height H4 on the front side vertical beam-like projection is 5 mm, the height of the anti-slip projection 40 is 5 mm or less, and is cylindrical as shown in FIG. 3B, and its diameter is about 3 mm. For example, four or more protrusions are provided per unit area of 18 mm square. With respect to such an arrangement, they are arranged in a staggered manner by being shifted by half a pitch every other line in parallel with the longitudinal direction of the vertical beam-like projections 21.

  The reason for adopting the third embodiment is that the anti-slip property is low when adopting a configuration in which the vertical beam-like projections 21 are not provided on the surface W of the sheet-like base material 20, and the surface of the sheet-like base material 20 In the case of adopting the configuration in which the vertical beam-like projection 21 is provided on W, the vertical beam-like projection 21 itself exhibits a certain amount of anti-skid effect, but is a continuous projection toward the eave direction, A strong catching force that causes catching or biting into the shoe sole Z does not occur. Therefore, when the roof gradient K is large, it is desirable to increase the hooking force so as to assist this and to make the worker safer.

  Here, as shown in FIG. 3 (c), the shape of the anti-slip protrusion 40 is such that the lower part has a large diameter and the upper part has a small diameter, and does not exceed the surface side vertical beam-like protrusion height H4. It is also effective to form a substantially convex two-stage protrusion protruding in two stages. For example, the lower part is 4 mm in diameter and the height is 2.5 mm, the upper part is 2 mm in diameter and the height is 2.5 mm.

  Furthermore, as long as it is a projection that exhibits the above effect, it may be a semi-elliptical projection, a polygonal projection, or a prismatic projection. It is also effective to use a medium-thick shape that has a sharp shape at the upper and lower ends as shown in FIG. With such a shape, since the edge of the sharp edge bites into the shoe sole Z, it is easy to be caught and can improve the slip resistance, and does not hinder the flow of the normal vertical rainwater Y, and It can also serve as a prevention wall that stops the flow of rainwater Y from the lateral direction due to lateral running.

  Furthermore, it is also effective to have a substantially triangular pyramid shape as shown in FIG. With such a shape, in relation to the roof gradient K, the angle is easy to bite into the shoe sole Z of the operator, the bending stress in the height direction of the anti-slip projection 40 is reduced as much as possible, and the compressive stress is applied as much as possible. This is because it is possible to increase the anti-slip property by biting into the shoe sole Z of the operator. Here, in the case of the substantially triangular pyramid shape, since the operator works with the body slightly tilted to the roof side in relation to the roof gradient K, the weight and eaves-side vectors are As shown in 3 (e), it works with a slight inclination angle. In addition, in consideration of molding by roll molding, it is difficult to make the angle from the surface W of the sheet-like base material 20 to the apex of the substantially triangular pyramid 90 degrees or less, so the eave direction from the apex The lower vertex position is lowered to reduce the bending stress.

  FIG. 7 is an explanatory view showing a fourth embodiment of the roof base material 10 according to the present invention, and FIG. 7 (a) shows the covering paper 30 integrally formed on both surfaces of the sheet-like base material 20 of the soft synthetic resin. FIG. 7B shows an example of a configuration in which a desiccant 60 is further applied to the surface of the coated paper 30 on the back surface U side that has been applied. The coated paper 30 is applied only to the front surface W of the sheet-like base material 20, and the rear surface U of the sheet-like base material 20 is directly encapsulated with the desiccant 60 without using the coated paper 30 on the back surface U. FIG. 7 (c) shows a coated paper 30 applied to the surface W of the soft synthetic resin sheet-like substrate 20, and FIG. 7 (c) shows the coated paper 30 on the back U. The Example of the structure using the coated paper 30 which contains the desiccant 60 in the coated paper is shown.

Examples of the desiccant 60 include silica gel (silica).
gel: Na2SiO3) or zeolite. Silica gel is a glassy porous solid that is commonly used as a desiccant / adsorbent because it has a large surface area and high adsorptivity. However, the moisture absorption rate varies from A-type drying to B-type humidity adjustment. Things are easy to prepare and can be prepared according to geographical climate characteristics. Since silica gel is made of silicon dioxide, it is the same material as quartz and quartz, and is a safe material that does not affect the human body. Recently activated soil components with special pores, such as Care Dry (registered trademark) and Decipac (registered trademark), among the physical desiccants, especially called "clay (clay) system" There are also agents, and these may be used as appropriate. Further, zeolite has the same characteristics as silica gel, and in recent years, many synthetic zeolites with improved water repellency have been sold, and these are attached to the back surface U of the sheet-like substrate 20 or contained in the coated paper 30 as appropriate. .

  FIG. 8 shows a fifth embodiment according to the present invention. In 5th embodiment, it has the connection part D in the up-and-down edge part of the sheet-like base material 20, and the shape of this connection part D is a sheet | seat on the other side from the surface W of the sheet-like base material on the other side. When the roof base material 10 is connected to each other and overlapped with each other when the roof base material 10 is connected, the back surface U has a stepped shape that is one-half the thickness of the sheet-like substrate 20. The sheet-like base material 20 has a thickness. The connection region width D1 on the upper side and the connection region width D2 on the lower side have the same dimensions, and are in the range of 50 mm to 150 mm, respectively.

  About the construction method of the roof base material 10 concerning this invention, it is the same as that of a normal roof base material, and a special tool etc. are unnecessary. On the roof road plate N of a house or the like, it is laid in order from the lower side of the eaves, and then the crosspiece 50 is driven and fixed with a nail or the like from above the roof base material 10. Further, since the vertical beam-like projections 21 can be arranged in the same manner as a fixed interval at which rafters to which the field plate N is fixed are provided, the roof base material 10 is positioned at the rafters of the field plate N. It can be securely fixed with a nail or a tucker needle.

  The roof base material 10 according to the present invention can be used not only as a roof base material 10 for a tile roof, but also as a base material for a metal roof member such as a galvalume steel plate. In particular, a metal roof member has a low sound insulation effect and a heat insulation effect as compared with a tile, and therefore, by using the present invention, it is possible to greatly compensate for the defects of the metal roof member. Further, the roof base material 10 of the present invention is provided with the vertical beam-like projections 21 on the back surface U or both surfaces, so that the space region R1 is ensured between the base material and the field board N, and air permeability is ensured. At the same time, it is related to a useful technique that contributes to the environment due to the effect of increasing the cooling and heating efficiency by heat insulation, and therefore, the industrial applicability of the roof base material 10 according to the present invention is considered to be large.

DESCRIPTION OF SYMBOLS 10 Roof base material 20 Sheet-like base material 21 Vertical beam-like protrusion part 22 Ventilation groove 23 Minute ventilation groove 30 Cover paper 40 Anti-slip protrusion part 50 Horizontal beam 60 Desiccant H1 Back surface side ventilation groove depth H2 Back surface side vertical beam-like protrusion Section height H3 Side running prevention height H4 Surface side vertical beam-like projection height H5 Surface side ventilation groove depth B1 Vertical beam-like projection width B2 Groove length B3 Minute groove length P1 Pitch P2 Minute ventilation groove pitch P3 Pitch R1 Area R2 Side-run prevention area Y Rain water S Water vapor D Connection portion D1 Connection area width D2 Connection area width N Base plate W Front surface U Back surface K Roof slope Z Shoe sole

Claims (4)

A roof base material formed by integrally covering a coated paper on one side or both sides of a sheet-like base material of a soft synthetic resin,
On the back surface or both surfaces of the sheet-like base material, formed by extending a vertical beam-shaped protrusion that has the direction between the buildings as the vertical direction,
The vertical beam-like projections are arranged in parallel at equal intervals,
A ventilation groove is provided on the surface of the vertical beam-like projection,
The ventilation grooves are lined up at regular intervals so that they are alternately phased so as not to be adjacent to the ventilation grooves of the vertical beam-shaped protrusions provided next to each other.
The depth of the ventilation groove is between the surface of the vertical beam-shaped protrusion and the surface of the sheet-like base material, and is disposed at a position that secures a lateral running prevention region from the ventilation groove to the surface of the sheet-like base material. Roof base material characterized by.   The soft synthetic resin sheet-like substrate or the coated paper is coated so as to be encapsulated with a desiccant, or the coated paper is a coated paper containing a desiccant. The roof base material according to claim 1.   A large number of anti-slip protrusions protruding at a height not exceeding the height of the vertical beam-like projections are arranged at isotropic intervals in the surface region of the sheet-like base material between the vertical beam-like projections arranged continuously. The roof base material according to claim 1 or 2, wherein It has a connecting part at the upper and lower edges of the sheet-like substrate,
The shape of the connecting portion is a step shape in which one side is from the upper surface of the sheet-like base material and the other side is from the back surface of the sheet-like base material, and the thickness is one-half of the thickness of the sheet-like base material. In addition, when the roof base material is connected, the connecting portions are combined and overlapped to form a thickness of the sheet-like base material, according to any one of claims 1 to 3. The roof base material described.