JPH0715918U - Roof waterproof structure - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent dew condensation, rainwater infiltration, and curling of the roof plate due to negative pressure load. [Structure] Not only the field material 6.2 is laid in double layers, but the first tarpaulin 7 such as asphalt roofing is laid on the upper field material 6 as well as the upper and lower field materials 6.
The second waterproof sheet 3 is also laid between the overlapping surfaces of the two.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a waterproof structure for a roof, and more specifically, it is characterized by a waterproof structure for a roof in which field materials are double laid.

[0002]

[Prior art]

 It is known to double-lay a base material, which is a base material for a roof, on a metal sheet roof, etc. (literature unknown). In particular, unlike a thatched roof, a horizontal thatched roof does not have sufficient strength for a positive load, so it is necessary to lay a field material of sufficient strength. Wood wool cement board, which is excellent in heat insulating effect, is generally used as the field material. Double laying the base materials not only provides sufficient strength against a positive load, but also creates a structure in which an air layer is formed between the overlapping surfaces of the base materials, increasing the effects of heat insulation and sound insulation. You can In addition, tarpaulins such as asphalt roofing are laid over the field materials to prevent dew condensation, prevent infiltration of rainwater, and protect the structures such as purlins and the field materials from decay.

[0003]

[Problems to be solved by the device]

 However, waterproof sheets such as asphalt roofing may be torn during construction, etc., which causes rain leakage into the room. In addition, the moisture flow from the room causes dew condensation, and this dew condensation water accumulates between the overlapping surfaces of the field materials, causing the field materials to decay, resulting in a decrease in the strength of the field materials and a cause of rain leaks into the room. Become. Furthermore, especially with such a structure, a roof plate such as a thin steel plate is easily turned over due to the negative wind pressure in strong wind.

An object of the present invention is to prevent dew condensation, prevent rainwater from entering, and prevent roof plate by modifying the double structure of the field material in the waterproof structure of the roof in which the field material is double laid as described above. The point is to prevent turning over due to negative pressure load.

[0005]

[Means for Solving the Problems]

 In the present invention, as shown in FIG. 1, the base materials 6 and 2 are laid in a double layer on the main building 1, and the roof plate 9 is roofed on the upper base material 6 via the first waterproof sheet 7. In the waterproof structure of the roof, the second waterproof sheet 3 is interposed between the overlapping surfaces of the upper and lower field materials 6 and 2. Wood wool cement board or the like is used as the field material 6.2, and asphalt roofing or synthetic polymer roofing is used as the first and second waterproof sheets 7.3.

[0006]

[Action]

 The second waterproof sheet 3 enhances the waterproof function in combination with the first waterproof sheet 7 and blocks moisture flow from the room, so that dew condensation between the overlapping surfaces of the field materials 6 and 2 is prevented. it can. By laying the second waterproof sheet 3 in addition to the first waterproof sheet 7, it becomes a structure that can withstand a negative pressure load on the roof plate 9.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a vertical sectional side view of a waterproof structure for a thatched roof, FIG. 2 is a cross-sectional front view of the waterproof structure, and FIG. 3 is a partially broken perspective view of the waterproof structure. A field material 2 such as a wood wool cement board is directly laid on the main building 1. The second tarpaulin 3 is laid on the field material 2, and then the metal talc 4 is attached to the purlin 1 with the fastener 5 such as a drill screw. A field material 6 made of the same material as the field material 2 is laid between the metal tarpaulins 4 and 4.

[0008] Thus, the first tarpaulin 7 is laid on the upper field material 6 as usual, and then the side-roofed roofing board 9 is roofed. The lateral roofing roof plate 9 has an upper engaging portion 10 formed by bending outward at the upper end and a lower engaging portion 11 formed by bending inward at the lower end, and the upper engaging portion of the lower roofing plate 9 is engaged. The lower engaging portion 11 of the upper roof plate 9 is engaged with the portion 10 and the roof is moved from the eaves toward the ridge. The roof plate 9 is fixed to the metal talc 4 with the hanger 12 without directly hitting it with nails or screws.

Asphalt roofing or synthetic high molecular roofing is used as the first and second waterproof sheets 7 and 3. Asphalt roofing uses more than 20 kg of asphalt roofing, and synthetic polymer roofing uses thin roofing sheet mainly made of synthetic rubber or synthetic resin such as butyl rubber and polyvinyl chloride. In addition to the thatched roof, it can be applied to a straw stick thatched roof as well.

[0010]

[Effect of device]

 In the waterproof structure of the roof of the present invention, not only the field material 6.2 is laid in the upper and lower layers and the first waterproof sheet 7 is laid on the upper field material 6, but also the field material 6.2 is The second waterproof sheet 3 is also laid between the overlapping surfaces. Therefore, it is possible to enhance the dew condensation prevention effect and rainwater intrusion prevention effect, and even if the first waterproof sheet 7 is broken, the second waterproof sheet 3 can supplement the waterproof function. Particularly, since the roof plate 9 has a structure that can withstand a negative pressure load, it is excellent in that it can well prevent the roof plate 9 from being turned over.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a waterproof structure for a roof.

FIG. 2 is a cross-sectional front view of the waterproof structure of the roof.

FIG. 3 is a perspective view showing the waterproof structure of the roof in a partially broken state.

[Explanation of symbols]

 1 Purlin 2 Field material 3 2nd tarpaulin 6 Field material 7 1st tarpaulin 9 Roof board

Claims (1)

[Scope of utility model registration request] 1. A waterproof structure for a roof in which a field material 6 and 2 are laid in a double layer on a purlin 1 and a roof plate 9 is roofed on an upper field material 6 via a first waterproof sheet 7. In the above, the waterproof structure for the roof is characterized in that the second waterproof sheet 3 is interposed between the overlapping surfaces of the upper and lower field materials 6 and 2.