JPS58523Y2 - roof underlayment - Google Patents

Description

[Detailed Description of the Invention] The present invention involves attaching a waterproof sheet 4 to the lower surface 3 of the glass fiber sheet 1 on the roofing board 2 side, and applying an aluminum vapor deposition layer 7 to the upper surface 6 of the glass fiber sheet 1 on the roof tile 5 side. This relates to roofing materials that need to be formed and treated.

Conventionally, there have been roofing materials A made of thermoplastic resins such as vinyl chloride and polyethylene, but they lacked heat insulation properties.

There was also a product that had aluminum foil pasted on its surface, but the aluminum foil sometimes broke during construction.

Although this aluminum foil is effective in blocking radiant heat, it has no effect in preventing heat conduction, and once roof base material A is installed, the tiles are directly placed on top of roof base material A. In order to do this, heat is transferred to the indoor side by thermal conduction,
Even if radiant heat is blocked, the heat insulation effect is insufficient.

Additionally, if the roof base material is made of only thermoplastic resin sheets, it is susceptible to heat and becomes soft in the summer, causing the roof base material to sag between the sheathing boards, or for workers to walk on the roof base material. The disadvantages are that the roofing material stretches when cut, and that the roofing material hardens in the winter, causing the roofing material to break or crack when the cutter is secured.

The present invention was made in view of the drawbacks of the conventional example,
The first purpose of this invention is to provide a roof base material with high heat insulation effect by preventing radiant heat and heat conduction, and the second purpose is to provide a roof base material with high strength against temperature and tension. It is on offer.

The present invention will be described in detail below according to examples.

The waterproof sheet 4 is made of thermoplastic resin such as vinyl chloride or polypropylene, and the glass fiber sheet 1 is bonded to the waterproof sheet 4.
A thin aluminum vapor deposition layer 7 is uniformly formed on the surface to form a roof base material A.

The surface of this aluminum vapor deposition layer 70 has a mirror surface.

The glass fiber sheet 1 itself has poor thermal conductivity,
Furthermore, since there is an air layer, the thermal conductivity is even worse.

Furthermore, the glass fiber sheet 1 is hardly affected by temperature and has high tensile strength, so it compensates for the drawbacks of the waterproof sheet 4 made of thermoplastic resin.

Then, the waterproof sheet 4 of the roof base material A is pasted and laid on the roof base board 2 side without any gaps, and the roof tiles 5 are stacked on the aluminum vapor deposited layer 7 of the roof base material A. Lay it.

Heat transmitted through the roof tiles 5 due to direct sunlight is reflected by the aluminum evaporated layer 7 and heat conduction is blocked by the glass fiber sheet 1, so that it does not reach the indoor side (and Moisture is blocked by the waterproof sheet 4 and does not enter into the glass fiber sheet 1.

In this invention, an aluminum vapor-deposited layer is formed on the upper surface of the glass fiber sheet on the roof tile side, so even if the roof tile is heated by direct sunlight and the heat is transferred, the radiant heat will be absorbed by the mirror surface. The heat reflected by the aluminum evaporated layer and the conducted heat can be insulated by the glass fiber sheet, and these two functions have the advantage of completely insulating the inside of the room. Since a waterproof sheet is attached to the bottom surface of the base plate, it is possible to prevent moisture from inside the room from entering the glass fiber sheet through the waterproof sheet, which has the advantage of not reducing the insulation effect. In addition, glass fiber sheets are not affected by temperature and have a high tensile strength, so by attaching a tarpaulin sheet to the glass fiber sheet, the tarpaulin sheet is reinforced, and the tarpaulin sheet It has the advantage that it does not stretch due to heat or tear during construction.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the construction of the present invention, and Fig. 2 is a vertical cross-sectional view of the same as above, where 1 is a glass fiber sheet, 2 is a roofing board, 3 is the bottom surface, 4 is a waterproof sheet, and 5 is a longitudinal sectional view of the same. 6 is the top surface of the roof tile, and γ is the aluminum vapor deposition layer.

Claims (1)

[Scope of utility model registration request] This roof base material is made by pasting a waterproof sheet on the lower surface of the glass fiber sheet on the roof board side and forming an aluminum vapor deposition layer on the upper surface of the glass fiber sheet on the roof tile side.