JPS6011208Y2 - Condensation drainage sheet for insulation walls - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a condensation drainage sheet for a heat insulating wall that is effective for draining condensation water generated within a wall incorporating a heat insulating material.

In recent years, insulation materials have often been incorporated into the walls of wooden houses to keep them warm, cool, and save energy.

In this case, a waterproof sheet is placed on the outside of the insulation material (wall base sheet).
Since the outside is coated with mortar or metal siding, condensation occurs on the inside of the waterproof sheet due to the temperature difference between the inside and outside.

However, when insulation materials are incorporated these days, moisture is trapped in the insulation materials, and the humidity inside the walls is always high without ventilation, which corrodes the structural materials such as pillars, foundations, timber boards, etc.

In particular, with the spread of oil heating, a large amount of moisture generated by the combustion of oil penetrates the inner wall and reaches the insulation material, making it difficult to ventilate and condensing when the outside air is cold, causing severe corrosion of the wood. Therefore, countermeasures are required.

The purpose of the present invention is to place dew on the outside of the heat insulating material so that dew condenses on the surface of the metal foil or sheet and flows down to be discharged outdoors.

Asphalt felt base paper impregnated with 150% or less of straight asphalt has a certain degree of air permeability.

Using this asphalt felt 1, a metal foil or sheet 3 is pasted in a strip shape at intervals of 2 to obtain a condensation drainage sheet of the present invention.

The impregnation rate of straight asphalt is preferably 100 to 150% since waterproofing is poor if it is less than 100%.

Metal foil or sheet can be made of aluminum, anti-corrosion treated iron,
Copper and lead are preferred.

Make it into a band shape with a width of 100 to 20 cm, and the shape is wavy (Fig. 2, 3), uneven (Fig. 3, 3-a), and flat (Fig. 4, 3-b).
Either of these is pasted onto the asphalt felt 1 at a distance of 2 using an adhesive 4 to obtain a heat insulating wall condensation discharge sheet of the present invention.

To explain how to use it, Fig. 5 is a sectional view of a wall, where 5 is an inner wall, 6 is a heat insulating material, a is a dew condensation drainage sheet of the present invention, 7 is an outer wall (mortared or siding), 8 is a foundation of a house, 9 is a drainer for draining condensation.

The condensation drainage sheet a is nailed with the surface to which the metal foil or sheet is attached facing the heat insulating material 6, and the outer wall 7 is finished.

With this configuration, moisture within the wall condenses on the metal surface 3 and flows down due to the difference in humidity between outdoors and indoors, and is discharged to the outside by the drainer 9.

The air-permeable asphalt felt space 2 is breathable, so unlike completely sealed plastic wall base sheets, it has the ability to seep through moisture and expel moisture. The metal surface is discharged downward, and when it is not normally, it is passed through the air permeable asphalt felt surface 1, and the air is aired to dry the wood and prevent corrosion of the wood.

[Brief explanation of drawings]

FIG. 1 is a perspective view, FIG. 2 is an enlarged sectional view taken along the line A-A', and FIGS. 3 and 4 are sectional views of modified examples. FIG. 5 is a cross-sectional view of the heat insulating wall. d... Condensation drainage sheet for insulation walls, 1. Curved asphalt felt,
2... Spacing, 3... Metal foil or sheet, 4... Adhesive, 5... Curved inner wall, 6... Curved/insulating material, 7...・Outer wall, 8...Curved foundation, 9...Curved drain.

Claims (1)

[Scope of utility model registration request] This dew condensation drainage sheet for heat insulating walls is made by pasting metal foil or sheet 3 at intervals 2 on one side of breathable asphalt felt 1.