JP2012229544A - Lap roofing slate roof material and construction method of lap roofing slate roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lap roofing slate roof material with high heat shielding/insulating effect and to provide a construction method for turning a building having an existing slate roof to a lap roofing slate roof.SOLUTION: Since a slate roof material 22 in use is wavy, when a planar heat insulating plate 26 is fixed to a top face, a part where the slate roof material 22 in use and the heat insulating plate 26 are abutted and a part where they are not abutted are generated. Also, similar parts are generated between a new slate roof material 24 and the heat insulating plate 26 as well. In such a manner, since heat is conducted only at the parts where the respective slate roof materials and the heat insulating plate are abutted, heat conduction is reduced as compared to the case that the entire surface is abutted. In addition, since a space is provided between the new slate roof material 24 and the heat insulating plate 26, even when heat of the new slate roof material 24 is transmitted to the air in the space, a heat quantity to be transmitted to the slate roof material 22 in use is reduced by the heat insulating plate 26.

Description

  The present invention relates to a lap slate roof material and a construction method of a lap slate roof.

  Conventionally, a method is known in which a slate roof is doubled and a heat insulating material is sandwiched between the slate roof and the slate roof to insulate. For example, in Patent Document 1, the heat insulation formed so that the lower surface is engaged with the shape of the upper surface of the existing roofing material of the building and the upper surface is engaged with the shape of the masked bottom of the new roofing material. There is described a renovated roofing heat insulating material characterized in that the upper and lower surfaces of a plate are covered with thin aluminum foils, are interposed between the existing roof material and the new roof material, and are engaged and installed. ing.

JP 2001-3521 A

  However, with such a heat insulating material, it is possible to obtain a certain heat insulating effect. However, since the slate roof and the slate roof are in close contact with each other by the heat insulating material, one of the slate roofs is heated by direct sunlight or the like. If this happens, the heat is transferred to the other slate roof through the heat insulating material. At this time, a part of heat is insulated by the heat insulating material, but it cannot be said to be enough to prevent summer heat due to recent warming. In particular, when a slate roofing material is used as a roof, the heat of the surface of the slate roofing material irradiated with sunlight is easily conducted to the heat insulating plate as the slate roofing material itself becomes thin due to long-term use, and as a result, There was a problem that indoors would be hot.

  The present invention has been made in view of such a problem, and by sandwiching a plate-shaped heat insulating material between double corrugated slate roofing materials, the area where each slate roofing material and the heat insulating plate are in contact is provided. The main object is to provide a multi-layered slate roofing material that can reduce the heat conduction from the slate roofing material to the heat insulating material and to provide a method for constructing the multi-layered roof using this multi-layered slate roofing material. Objective.

  The present invention adopts the following means in order to achieve at least one of the above objects.

The layered slate roofing material of the present invention is
A first corrugated slate roofing material formed into corrugations;
A plate-like heat insulating plate fixed to the top surface of the first corrugated slate roofing material;
A corrugated second corrugated slate roofing material fixed to the upper surface of the heat insulating plate;
It has.

  Since the first corrugated slate roofing material is corrugated, the laminated corrugated slate roofing material is insulated from the first corrugated slate roofing material when the plate-like heat insulating plate is fixed to the top surface of the first corrugated slate roofing material. An air layer is born between the plates. Similarly, a space is created between the second corrugated slate roofing material and the heat insulating plate. By doing so, even when the second corrugated slate roofing material becomes hot due to direct sunlight or the like, it is necessary to pass through the air layer and the heat insulating plate in order to transmit this heat to the second corrugated slate roofing material. . For this reason, compared with the case where only an air layer or a heat insulating board exists between a 1st corrugated slate roof material and a 2nd corrugated slate roof material, heat conduction can be reduced.

  In the laminated slate roofing material of the present invention, the first corrugated slate roofing material and the second corrugated slate roofing material are formed by a through-fixing member penetrating the heat insulating plate, and the top surface of the first corrugated slate roofing material. The top surface of the second corrugated slate roof material may be fixed. In other words, an air layer and a heat insulating plate always exist between the first corrugated slate roof material and the second corrugated slate roof material. For this reason, compared with the case where the bottom face of the 1st corrugated slate roof material and the top face of the 2nd corrugated slate roof material are fixed with a heat insulation board, conduction of heat can be reduced more. In the overlapped slate roof material of the present invention adopting this aspect, the waveform of the first corrugated slate roof material and the waveform of the second corrugated slate roof material may be the same. In this way, the top surface of one slate roofing material and the bottom surface of the other slate roofing material are not close to each other, and the distance between the first corrugated slate roofing material and the second corrugated slate roofing material is kept at substantially the same distance. Will be. In other words, since the air layer having the same width is maintained regardless of the place, a uniform heat shielding effect can be obtained.

  In the laminated slate roofing material of the present invention, the first corrugated slate roofing material is fixed in a direction in which corrugated peaks and valleys are alternately arranged in a direction substantially parallel to the C-shaped steel to which the first corrugated slate roofing material is fixed. May be. If it carries out like this, the air layer produced between each corrugated slate roofing material and a heat insulation board will be located in the substantially parallel to C type steel to which the corrugated slate roofing material is being fixed. For this reason, when heat radiation occurs in the air layer from the second corrugated slate roofing material, the warmed air rises along the longitudinal direction of the C-shaped steel, and cooler air moves from below. For this reason, the amount of heat transferred from the air layer to the heat insulating material can be reduced. The same effect can be obtained for the heat insulating plate and the first corrugated slate roofing material.

  In the laminated slate roofing material of the present invention, the heat insulating plate may position the heat insulating plate by burying a part of the top of the fixing member in the lower surface of the heat insulating plate. If it carries out like this, a part of head top part of a fixing member will be buried in a fixing member by simple operation of pressing a heat insulation board to the 1st corrugated slate roof material, and a fixing member can be positioned. In other words, it is possible to reduce the possibility that the heat insulating plate placed on the top of the first corrugated slate roof material will move.

  In the laminated slate roof material of the present invention, the heat insulating plate may be an extruded foamed polystyrene plate. Extruded polystyrene foam is stiffer than polystyrene foamed beads, so that the possibility of breakage of the heat insulating material can be reduced. In particular, since the first corrugated slate roofing material is corrugated, there is a great advantage in using an extruded polystyrene foam having strength that does not break even if the installer gets on the heat insulating plate.

  In the overlapped slate of the present invention, the first corrugated slate roofing material may be a corrugated slate roofing material after use. Such a corrugated slate roofing material is thin due to aging deterioration due to use, and since the heat insulation / heat shielding effect by painting is low, the effect of applying the present invention is great.

The method of constructing the multi-layered slate roof of the present invention is as follows:
A first corrugated slate roofing material formed in a corrugated shape, a plate-like heat insulating plate fixed to the top surface of the first corrugated slate roofing material, and a second corrugated shape fixed to the upper surface of the heat insulating plate. Corrugated slate roof material
a) a heat insulating plate fixing step for fixing the heat insulating plate to the upper surface of the first corrugated slate roof material fixed to the main building;
b) a slate fixing step of fixing the second corrugated slate roofing material on the upper surface of the heat insulating plate;
Including.

  In this method of constructing the multi-layered slate roof, since the plate-like heat insulating material is fixed to the upper surface of the corrugated first corrugated slate roof material, the plate-like heat insulating plate is attached to the top surface of the first corrugated slate roof material. When fixed, an air layer is created between the first corrugated slate roofing material and the heat insulating plate. Similarly, a space is created between the second corrugated slate roofing material and the heat insulating plate. By doing so, even when the second corrugated slate roofing material becomes hot due to direct sunlight or the like, it is necessary to pass through the air layer and the heat insulating plate in order to transmit this heat to the second corrugated slate roofing material. . For this reason, compared with the case where only an air layer or a heat insulating board exists between a 1st corrugated slate roof material and a 2nd corrugated slate roof material, heat conduction can be reduced. In addition, even when the first corrugated slate roofing material is fixed to the main building, it is possible to construct the laminated roofing material of the present invention on the roof. The effect of applying the invention is great.

The perspective view which shows the outline of a structure of the lap slate roofing material 20. FIG. Sectional drawing which shows the outline of a structure of the double-glazed slate roofing material. Explanatory drawing for demonstrating the method of constructing the double-glazed slate roofing material.

  Here, based on the above-described drawings, the correspondence between the constituent elements of the present embodiment and the constituent elements of the present invention will be clarified in describing the embodiment for carrying out the present invention. The overlapped slate roofing material 20 of the present embodiment corresponds to the overlapped slate roofing material, the slate roofing material 22 in use corresponds to the first corrugated slate roofing material, the heat insulating plate 26 corresponds to the heat insulating plate, and is new. The slate roof material 24 corresponds to a second corrugated slate roof material, the hook bolt 28 corresponds to a fixing member, the round cap nail 30 corresponds to a through fixing member, and the C channel 32 corresponds to C-shaped steel. In addition, an example of the construction method of the multi-story roof of the present invention is also clarified by explaining the construction method of the multi-storied slate roof material 20.

  Next, with reference to FIG. 1, the configuration of a stacked slate roof material 20 that is an example of an embodiment of the present invention will be described in detail. Here, FIG. 1 is a perspective view showing an outline of the configuration of a multi-layered slate roofing material 20 which is an example of an embodiment of the present invention, and FIG. 2 (A) is a cross-sectional view taken along line AA in FIG. It is sectional drawing cut | disconnected, FIG.2 (B) is sectional drawing cut | disconnected by the BB cross section in FIG. As shown in FIG. 1, the stacked slate roofing material 20 is fixed by sandwiching a heat insulating plate 26 between a slate roofing material 22 in use and a new slate roofing material 24.

  The slate roofing material 22 in use is made of inorganic fibers and cement as main raw materials, and is formed into a corrugated shape by pressing, and by hook bolts 28 (see FIG. 2 (A)) penetrating the corrugated top surface, It is fixed to the C channel 32. The hook bolt 28 is inserted into a hole (not shown) provided in the C channel 32, one end side is engaged with the C channel 32, and the slate roof material 22 in use is fixed by a nut 29 on the other end side. Yes. At this time, the nut 29 is positioned below the top of the screw portion, and the screw portion protrudes from the nut 29 (see FIG. 2A).

  The heat insulating plate 26 is a plate made of extruded polystyrene, and is fixed between the slate roof material 22 in use and the new slate roof material 24. As shown in FIG. 2A, the heat insulating plate 26 is positioned on the slate roof material 24 in use by embedding a part of the top of the hook bolt 28. In addition, as shown in FIG. 2B, the heat insulating plate 26 has a round cap nail 30 for fixing the slate roofing material 22 in use and the new slate roofing material 24 penetrating therethrough, and the slate roofing material in use. 22 and a new slate roofing material 24. At this time, since it is fixed at a position in contact with the top surface of the slate roof material 22 in use, a space is created between the slate roof material 22 in use and the heat insulating plate 26. Moreover, since the heat insulation board 26 is being fixed in the position which contact | connects the bottom face of the new slate roof material 24, a space will be born similarly between the new slate roof material 24 and the heat insulation board 26. Moreover, since the heat insulation board 26 is mutually arrange | positioned in the position where the position of the top surface of the slate roof material 22 in use and the position of the top surface of the new slate roof material 24 overlap, each slate roof material has a cross section. As a reference, each slate roofing material abuts against the heat insulating plate 26 alternately. For this reason, when heat is conducted from the new slate roof material 24, heat is not conducted to the slate roof material 22 in use unless it is conducted not only in the thickness direction of the heat insulating plate 26 but also in the horizontal direction. The moving distance of heat in the heat insulating plate 26 becomes longer. In addition, when some force is applied to the new slate roof material 24, there are a position where the heat insulating plate 26 is pressed by the new slate roof material 24 and a position where the heat insulating plate 26 is supported by the slate roof material 22 in use. Since they are different, the possibility that the heat insulating plate 26 is crushed can be reduced in advance.

  The new slate roofing material 22 is a plate formed into a corrugated shape mainly composed of cement not containing asbestos, and has substantially the same corrugated shape as the slate roofing material 22 in use. The new slate roofing material 22 is fixed to the slate roofing material 22 in use via a heat insulating plate 26 by a round cap nail 30 penetrating the corrugated bottom surface.

  Next, the construction method of the laminated slate roof material 20 of this embodiment configured in this way will be described in detail with reference to FIG. Here, FIG. 3 is an explanatory view showing an example of a construction method of the double-glazed slate roofing material 20, and FIG. 3A shows a state before construction of the double-glazed slate roofing material 20, that is, the C channel 32. FIG. 3B shows a state in which the slate roof material 22 in use is fixed, FIG. 3B shows a state in which the heat insulating plate 26 is positioned on the upper surface of the slate roof material 22 in use, and FIG. The state where the slate roofing material 22 is fixed and the construction of the slate roofing material 20 is finished is shown.

  In the state before construction, the slate roofing material 22 in use is fixed to the C channel 32 by hook bolts 28 as shown in FIG. The slate roofing material 22 in use has deteriorated over time due to long-term use, and old ones may contain substances harmful to the human body such as asbestos that cannot be used at present. Further, it is considered that a general slate roofing material is thinned by about 1 millimeter every 10 years due to aging. For this reason, immediate measures are required for slate roofing materials that have deteriorated over the years after being used for many years. However, there are many cases where no measures are taken because the main building cannot be used when replacing roofing materials. .

  A heat insulating plate 26 is disposed on the upper surface of the slate roof material 22 in use in such a state. At this time, by pressing the heat insulating plate 26 from above, a part of the screw portion of the hook bolt 28 fixing the slate roofing material 22 in use is buried in the heat insulating plate 26 and the heat insulating plate 26 is positioned ( (See FIG. 2A). By doing so, the possibility that the heat insulating plate 26 slides down from the surface of the slate roof material 22 in use can be reduced even on a roof having an inclination. In addition, since the heat insulating plate 26 is made of extruded polystyrene having a high hardness, the heat insulating plate 26 may be damaged when the installer gets on the heat insulating plate 26 at the time of construction, as compared with a product made of polystyrene foam beads. It can be reduced in advance.

  Subsequently, a new slate roofing material 24 is disposed above the heat insulating plate 26, and a round casket 30 is driven to fix the slate roofing material 22 in use. The round cap nail 30 penetrates the heat insulating plate 26 and fixes a new slate roof material 24 to the slate roof material 22 in use. By doing so, the new slate roofing material 24 can be disposed without removing the slate roofing material 24 in use from the C channel 32, and an excellent heat shielding / insulating effect can be obtained.

  Here, the heat-shielding and heat-insulating effect using the stacked slate roofing material 20 will be described using Table 1 below. Here, Table 1 is a table comparing the type of roofing material on one day in summer and the indoor temperature, and the highest temperature announced on this day by the Japan Meteorological Agency was 35.1 ° C. As the measurement conditions, the result of sample 1 is the building using normal slate roofing material (single roofing material), the temperature near the ceiling, the temperature at a point 1.5 m from the floor, and the temperature near the soil. It is the result of measurement. Sample 2 is the result of measuring the temperature in the same manner as in sample 1 in a building using the stacked thatched slate roofing material 20.

  As can be seen from Table 1, when the slate roofing material 20 is used, it is about 30% near the ceiling and about 15% near 1.5 m from the floor, compared to the case where the sample 1 is used. A temperature drop has occurred. From this result, it can be seen that an excellent heat insulating and heat shielding effect can be obtained by changing the slate roofing material to the laminated roofing material.

  The main reason why such an excellent heat insulation / heat insulation effect is obtained is that the inventor has the contact point between each slate roofing material and the heat insulating plate 26 and between each slate roofing material and the heat insulating plate 26. I think that the air layer provided in the center plays a big role. The new slate roofing material 24 irradiated with strong direct sunlight in midsummer becomes high temperature due to radiant heat from the sun. This high heat is transferred to the interior mainly by heat conduction and heat transfer, but since the contact point between the new slate roofing material 24 and the heat insulating plate 26 is small, the new slate roofing material 24 and the heat insulating plate 26 are in close contact with each other. Compared with the case where it is, the heat transfer by heat conduction is less. This is the same between the new slate roofing material 24 and the heat insulating plate 26. In addition, since there is a space between the new slate roofing material 24 and the heat insulating plate 26, even if the heat of the new slate roofing material 24 is transferred to the air in the space, the slate in use by the heat insulating plate 26. The amount of heat transmitted to the roofing material 22 is reduced.

  In addition, when the air located between the heat insulating plate 26 and each slate roofing material is warmed, the warmed air is relatively lighter than the cold air and therefore moves above the roof. For this reason, compared with the case where the warmed air stays, the amount of heat transmitted to the slate roofing material 22 in use via the air can be reduced. This means that air flows at the same time on the back side of the new slate roof material 24 having a high temperature, and the air cooling effect of the new slate roof material 24 can be obtained at the same time. For this reason, the rise in indoor temperature can be further reduced by the heat insulation effect and the air cooling effect.

  According to the overlapped slate roofing material 20 of the present embodiment described in detail above, since the slate roofing material 22 in use is corrugated, when the plate-like heat insulating plate 26 is fixed to the top surface, it is in use. A portion where the slate roofing material 22 and the heat insulating plate 26 are in contact with each other and a portion where the slate roof material 22 is not in contact with each other are generated. In addition, a similar portion is generated between the new slate roofing material 24 and the heat insulating plate 26. By doing so, heat conduction occurs only at the portion where the respective slate roofing material and the heat insulating plate abut, so that the heat conduction can be reduced as compared with the case where the entire surface abuts.

  In addition, since the top surface of the slate roofing material 22 in use and the bottom surface of the new slate roofing material 24 are fixed by the round caps 30 passing through the heat insulating plate 26, the slate roofing material 22 in use and the new slate roofing material are used. The contact position between the material 24 and the heat insulating plate 26 is shifted in the horizontal direction of the heat insulating plate, so that each slate roof material and the heat insulating plate 26 do not contact at one point. For this reason, when heat is conducted from the new slate roofing material 24, heat is not conducted to the slate roofing material 22 in use unless it is conducted not only in the thickness direction of the heat insulating material 26 but also in the horizontal direction. The moving distance of the heat in the heat insulating material 26 becomes long. In other words, the heat conduction can be further reduced as compared with the case where the bottom surface of the new slate roof material 24 and the top surface of the slate roof material 22 in use are fixed to the heat insulating plate 26.

  Furthermore, since the waveform of the slate roof material 22 in use and the waveform of the new slate roof material 24 are the same, the distance between the slate roof material 22 in use and the new slate roof material 24 is substantially the same. Will be kept. For this reason, since an air layer having a uniform width is maintained regardless of the location, a uniform heat shielding effect can be obtained.

  Furthermore, since the heights of the fracture surfaces of the slate roofing material 22 and the new slate roofing material 24 are fixed at different positions, an air layer generated between the slate roofing material and the heat insulating plate 26 is generated. Long in the vertical direction. For this reason, when heat moves from the new slate roofing material 24 to the air layer, warmed air moves upward, and cooler air moves from below. For this reason, the amount of heat transferred from the air layer to the heat insulating material 26 can be reduced. The same effect can be obtained with respect to heat conduction from the heat insulating plate 26 to the slate roof material 22 in use.

  And since a part of thread part of the hook bolt 28 is buried in the heat insulation board 26, even if the slate roof material 22 in use has an inclination, the possibility that the heat insulation board 26 slides down will be reduced. can do.

  Further, the heat insulating plate 26 is an extruded polystyrene plate and has higher strength than the beaded foamed polystyrene plate. Therefore, at the time of construction, the heat insulating plate 26 is disposed on the upper surface of the corrugated slate roofing material 22, and the installer makes the heat insulating plate 26. Even when riding on the work, the possibility of breakage can be reduced.

  Furthermore, the slate roofing material 22 in use has deteriorated over time and is used while being fixed to the main building. Since such a roofing material has a low heat insulating effect by a method such as heat insulation coating, the present invention The effect of applying is great. Of these slate roofing materials 22 in use, asbestos is used for slate roofing materials constructed before October 2004, but the surface is made of a heat insulating plate 26 and a new slate roofing material 24. By covering, it is possible to reduce the possibility that asbestos is scattered to cause health damage.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the above-described embodiment, an extruded polystyrene foam plate is used as the heat insulating plate 26. As the extruded polystyrene foam plate, for example, Styrofoam (registered trademark of The Dow Chemical Company) is used. Also good. If it carries out like this, the labor at the time of a process can be reduced more, reducing the possibility of damaging at the time of construction.

  In the embodiment described above, the slate roof material 22 in use and the new slate roof material 24 are arranged at positions where the top surfaces of the respective corrugations overlap each other, but the top surface and the bottom surface of each corrugation overlap. You may arrange in a position.

  In the above-described embodiment, the slate roofing material 22 in use is fixed to the C channel and used over time. However, it may be removed in advance or unused. It may be a thing. In any case, the same effect as the above-described embodiment can be obtained.

  In the above-described embodiment, the slate roofing material 22 in use is fixed using the hook bolt 28 and the new slate roofing material 24 is fixed using the round cap nail 30, but the fixing means is the hook bolt 28. It is not limited to the round cap nail 30 and various nails and various bolts may be used. In any case, the same effect as the above-described embodiment can be obtained.

  As shown in the above-described embodiment, it can be used as an architectural field, in particular, as a slate roof renovation.

20 ... Stacked slate roofing material, 22 ... Slate roofing material in use, 24 ... New slate roofing material, 26 ... Insulation plate, 28 ... Hook bolt, 29 ... Nut, 30 ... Marukasa nail, 32 ... C channel.

Claims (8)

A first corrugated slate roofing material formed into corrugations;
A plate-like heat insulating plate fixed to the top surface of the first corrugated slate roofing material;
A second corrugated slate roofing material fixed to the upper surface of the heat insulating plate and formed into a corrugated shape;
With
Multi-layered slate roofing material. Said 1st corrugated slate roof material and said 2nd corrugated slate roof material are the top surface of said 1st corrugated slate roof material and the top surface of said 2nd corrugated slate roof material by the penetration fixing member which penetrates said heat insulation board. And are fixed,
The laminated slate roofing material according to claim 1. The waveform of the first corrugated slate roofing material and the waveform of the second corrugated slate roofing material are the same waveform,
The overlapped slate roofing material according to claim 1 or 2. The first corrugated slate roof material is fixed in a direction in which corrugated peaks and valleys are alternately arranged in a direction substantially parallel to the C-shaped steel to which the first corrugated slate roof material is fixed.
The stacked-up slate roofing material according to any one of claims 1 to 3. The heat insulating plate positions the heat insulating plate by burying a part of the top of the fixing member in the lower surface of the heat insulating plate,
The multi-glazed slate roof material according to any one of claims 1 to 4. The heat insulating plate is an extruded polystyrene foam plate,
The laminated slate roofing material according to any one of claims 1 to 5. The first corrugated slate roofing material is a used corrugated slate roofing material,
The overlapped slate roofing material according to any one of claims 1 to 6. A first corrugated slate roofing material formed in a corrugated shape, a plate-like heat insulating plate fixed to the top surface of the first corrugated slate roofing material, and a second corrugated shape fixed to the upper surface of the heat insulating plate. Corrugated slate roof material
a) a heat insulating plate fixing step of fixing the heat insulating plate to the top surface of the first corrugated slate roof material;
b) a slate fixing step of fixing the second corrugated slate roofing material on the upper surface of the heat insulating plate;
including,
How to build a slate roof.