JPH0419139Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a roof base material used as a waterproof base for a roof.

[Background technology] When constructing a roof, a roofing material is laid on top of the roofing boards and fixed with nails, and then roof tiles are placed on top of this to ensure waterproofing of the roof with the roofing material. ing. As such a roof base material A, the one shown in FIG. 4 has conventionally been generally used. This material is formed by pasting terfelt 2, which is formed by impregnating paper with coal tar, on the back side of a resin sheet 1 made of a soft thermoplastic resin such as polyvinyl chloride, and further on the surface of the resin sheet 1. is coated with anti-slip paint 8. In this case, resin sheet 1
Waterproofing can be achieved with a two-layer combination of 2 and Turfelt 2, and since Turfelt 2 is made of paper and has hygroscopic properties, it can prevent condensation from forming on the surface of the roofing board and prevent corrosion of the roofing board. It has the characteristic that it can be done.

However, in this case, the heat from the roof tiles is directly transmitted to the resin sheet 1, and the resin sheet 1, which has a large thermal expansion, expands and contracts.
This expansion and contraction causes the holes for the nails driven into the roof base material A to widen, and there is a risk that rainwater may enter the roofing board from this area, and the roof base material itself has no heat insulating properties. As a result, there was a risk that a large amount of condensation that could not be absorbed by the terfelt 2 would occur on the roofing board.

[Purpose of the invention] The present invention has been made in view of the above points, and provides a roof that can reduce expansion and contraction due to temperature changes and that can reliably prevent condensation from forming on the roofing boards. Its purpose is to provide a base material.

[Disclosure of the invention] Accordingly, the roof base material according to the invention includes terfelt 2, which is formed by impregnating paper with coal tar, attached to the back side of the resin sheet 1; A turfelt crepe 4 formed with wrinkles 3 on the surface is arranged on the surface side of the resin sheet 1, and this turfelt crepe 4 is attached to the surface of the resin sheet 1 with a large number of parallel adhesive lines 5, It is characterized by forming an air layer 6 between the resin sheet 1 and this turfelt crepe 4 between adjacent adhesive lines 5, and is a turf felt crepe that is pasted on the surface side of the resin sheet 1. The above object is achieved by forming an air layer 6 having a heat insulating effect between the resin sheet 4 and the resin sheet 1.The present invention will be described in detail below with reference to examples.

The resin sheet 1 is made of a soft thermoplastic resin such as polyvinyl chloride, and the terfelt 2 is attached to the entire surface of the resin sheet 1 by adhesive or fusion. There is. Turfelt 2 is formed by impregnating paper with coal tar at a ratio of about 70 to 75%. Although the coal tar blocks water passage, water is absorbed into the fine gaps between the paper fibers. By doing so, it has the ability to absorb moisture and also has breathability.
It usually has the ability to absorb about 500g/ ^m2 of moisture. Further, a terfelt crepe 4 is pasted on the front side of the resin sheet 1. Turfelt crepe 4 is made by impregnating paper with coal tar at a ratio of about 70 to 75% and crimping turfelt like crepe to create many wrinkles 3 on the surface. be. When attaching this turfelt crepe 4 to the surface side of the resin sheet 1, as shown in FIG. Therefore, it is pasted to the resin sheet 1 by fusion or the like at regular intervals, and by pasting the adhesive lines 5 at regular intervals in this way, the adjacent adhesive lines 5 can be bonded as shown in FIG. , 5, an air layer 6 is formed between the resin sheet 1 and the terfelt crepe 4. Further, by the pressure applied when the terfelt crepe 4 is fused to the resin sheet 1 by the adhesive line 5, grooves 10 are formed on the surface of the terfelt crepe 4 along the adhesive line 5.

In this way, the resin sheet 1 and the turfelt 2 are
The roof base material A, which is formed into a three-layer structure consisting of turf and turf felt crepe 4, is used by laying it on the sheathing board 9 of the roof and further fixing it with nails, as shown in Fig. 3. In this way, roof tiles are laid on the roof base material A laid on the roofing board 9. At this time, the roof base material A is laid so that the adhesive line 5, that is, the groove 10, faces toward the eave ridge, and furthermore, the groove 10 is vertically continuous between the roof base materials A and A that are adjacent in the eave ridge direction. By doing so, rainwater that has entered the underside of the roof tiles is drained away by the grooves 10 toward the eaves.

Therefore, the roof base material A formed as described above
In the above embodiment, since the turf felt crepe 4 to be pasted on the surface of the resin sheet 1 is formed with wrinkles 3 on the surface, the roof base material A is placed on the roof board 9. When performing tile roofing work on the roof base material A after it has been laid, the risk of slipping due to the wrinkles 3 of the turf felt crepe 4 can be prevented. In addition, the air layer 6 between the turfelt crepe 4 attached to the surface side of the resin sheet 1 and the resin sheet 1 acts as a heat insulating layer to prevent a large amount of condensation from forming on the surface of the roofing board 9. Furthermore, the heat insulating effect of this air layer 6 can prevent heat from the roof tiles from being directly transmitted to the resin sheet 1, compared to turfelt crepe 4, which uses paper as a base material and has a low coefficient of thermal expansion. Therefore, large thermal expansion and contraction can be prevented from occurring in the resin sheet 1 having a large coefficient of thermal expansion, and large expansion and contraction can be prevented from occurring in the roof base material A using the resin sheet 1 as a base material. In addition, when roofing with Japanese tiles, soil must be piled up on the roof base material A, and the surface layer of the roof base material A, Turfelt Crepe 4, blends well with the soil and is suitable for roofing with Japanese tiles. This allows for easier construction.

[Effect of the invention] As mentioned above, in the present invention, terfelt, which is formed by impregnating paper with coal tar, is pasted on the back side of the resin sheet. The hygroscopicity of the felt prevents dew condensation from forming on the surface of the roofing board and prevents corrosion of the roofing board.Moreover, the tartar is made by impregnating paper with coal tar and creating wrinkles on the surface. Elt crepe is arranged on the surface side of the resin sheet, and this terfelt crepe is attached to the surface of the resin sheet with many parallel adhesive lines, and the resin sheet and this terfelt crepe are bonded between adjacent adhesive lines. Since an air layer is formed in between, the air layer between the turfelt crepe on the surface side of the resin sheet and the resin sheet acts as a heat insulating layer to prevent large amounts of condensation from forming on the surface of the roofing board. Furthermore, the heat insulation effect of this air layer prevents the heat from the roof tiles from being directly transmitted to the resin sheet, preventing large thermal expansion and contraction of the resin sheet. It is possible to prevent large expansion and contraction of the roof material, and to prevent rainwater from penetrating into the roofing board through the widening of the hole for the nail nailed into the roof base material. Moreover, since wrinkles are formed in the turf felt crepe that is attached to the surface of the resin sheet, when performing tile roofing work on the roof base material after laying the roof base material on the shedding board, These wrinkles can prevent the risk of slipping, allowing safe tile roofing work.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the same, FIG. 3 is a schematic perspective view of the same in use, and FIG. 4 is an enlarged sectional view of a conventional example. 1 is a resin sheet, 2 is a turf felt, 3 is a wrinkle, 4 is a turf felt crepe, 5 is an adhesive line, 6
is an air layer.

Claims (1)

[Scope of utility model registration request] Turfelt, which is formed by impregnating paper with coal tar, is pasted on the back side of the resin sheet, and turfelt crepe, which is formed by impregnating paper with coal tar and providing wrinkles on the surface, is attached to the front side of the resin sheet. At the same time, this turfelt crepe is attached to the surface of the resin sheet with many parallel adhesive lines.
This roofing base material is made by forming an air layer between a resin sheet and this turfelt crepe between adjacent adhesive lines.