JPH0416657A - Drainage for heat insulating waterproof layer on rooftop - Google Patents

Abstract

PURPOSE:To promote to drain water on the whole rooftop part by arranging a water conducting protection layer on the contact face between a waterproof layer and covering concrete, and leading the extreme end of the layer up to the upper part of a rolled waterproof layer of a roof drain. CONSTITUTION:Heat insulating material 4 fitted in layer on the waterproof layer 2 of a rooftop 1 is stopped on this side of a roof drain 3 on the end part of a drain groove, and concrete is placed on the heat insulating material 4 and the waterproof layer 2. A water conducting protection layer 8 is arranged on the contact face between the waterproof layer 2 and covering concrete 5, and the extreme end of the layer 8 is led up to the upper part of a rolled waterproof layer 2a of a roof drain 3. A drain water passage is formed out of this protection layer 8, residence water in the vicinity of the heat insulating material 4 is introduced to the roof drain 3, and smoothly drained. Hereby, drainage of the whole rooftop part can be promoted, and freezing of the covering concrete can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a drainage device for a walking rooftop insulation and waterproof layer.

(Prior art) Figure 5 shows a conventional external insulation waterproof layer on a rooftop.
A waterproof layer (b) is layered on top of the waterproof layer (b), and a heat insulating material (C) is layered on the waterproof layer (b) up to the roof drain (d) at the end of the drain, and the waterproof layer (tl) and the heat insulating layer ( C) Holding concrete (e) was poured thickly only at the ends.

In the figure (') is the welded wire mesh buried in the holding concrete (e), (the odor is the insulation material, and (b') is the waterproof N (b).
This is the waterproof layer wrapped around the roof drain at the end.

(Problems to be Solved by the Invention) In the conventional outdoor rooftop insulation waterproof layer, the waterproof layer (b) is located between the end of the insulation material (C) on the rooftop and the roof drain (d). Since it is in close contact with a), a weir A is formed on the drain side, and due to this weir, accumulated water near the end of the heat insulating material (Q) cannot be drained smoothly, resulting in a decrease in heat insulation performance.

The present invention has been proposed in view of the problems of the prior art, and its purpose is to provide a rooftop insulation and waterproofing layer that can promote drainage in the rooftop insulation and waterproofing layer and prevent a decline in insulation performance. The point is to provide a drainage device.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the drainage device for the rooftop insulation layer according to the present invention is provided by layering insulation material on the waterproof layer layered on the rooftop up to the end of the drainage channel. In an outdoor roof insulation waterproofing layer formed by layering holding concrete over the waterproofing layer on the insulation material and between the insulation material and the end of the drainage ditch, between the waterproofing layer and the holding concrete layer. To,
The end portion is constructed by layering a water-conducting protective layer that extends to the upper part of the waterproof layer entrained in the end drainage channel.

(Function) According to the present invention, as described above, there is an edge between the drain groove end on the waterproof layer layered on the rooftop and the heat insulating layer layered on the waterproof layer up to this side of the drain groove end. By layering a water-conducting protective layer that extends to the upper part of the water-containing waterproof layer of the drainage ditch, a water channel is formed between the weir near the drainage ditch and the waterproof layer, and the accumulation near the insulation material in the weir is prevented. Water is drained smoothly and a decline in insulation performance is prevented.

(Example) The present invention will be described below with reference to the illustrated embodiments.

(1) is the rooftop, and the waterproof layer (2) is layered on the top surface.
The end of the waterproof layer (2) is connected to the roof drain (
3) is the rolled-up waterproof layer (2a).

(4) is a heat insulating material layered on the waterproof layer (2), and is stopped in front of the roof drain (3). Furthermore, holding concrete (5) is placed on the heat insulating material (4) and the waterproof layer (2). Therefore, the intermediate concrete (5) is cast only thickly at the ends.

In the figure, (6) is a welded wire mesh buried in the holding concrete (5), and (7) is a heat insulating material.

A water-conducting protective layer (8) is provided on the contact surface between the waterproof layer (2) and the holding concrete (5), and the protective layer (8)
) is led to the upper part of the waterproof layer (2a) in the roof drain (3).

Figure 2 shows the details of the water conduction protection M (8), and shows the copper wire (8).
It is composed of a sandwich layer with a) as a core wire and upper and lower sand roofings (8b) bonded together with asphalt compound with their sand surfaces facing each other.

The water conductive protective layer (8) is attached to each upper and lower sand roofing (8b).
) were pasted together with asphalt compound so that the sand sides of the roofing (8b) faced each other.
The bonding surface of the sand-covered roofing (8b) is formed into a rough surface by sand, and the sand surfaces of both sand-covered roofings (8b) are dot-bonded with an asphalt compound, while the sand-covered roofing layer (8b) is bonded to the surface of the water-conducting protective layer (8). Because the roofing surface (8a) is located, the asphalt compound firmly adheres to the waterproof layer, and the stagnant water is removed from the water-conducting protective layer (8).
will guide you smoothly into the drain.

Furthermore, the copper wire (8a) functions as a reinforcing member for the water-conducting protective layer, and since it is made of copper, it has high corrosion resistance.

According to the illustrated embodiment, as described above, a water conductive protective layer (8) is provided between the weir at the roofing drain (3) and the waterproof layer (2), and the protective layer (8) allows waterways to flow through the roofing drain (3). Due to the formation, accumulated water near the insulation material (4) is guided to the roof drain (3) by the protective layer (8),
Water drains smoothly.

As described above, according to the above-mentioned embodiment, the flow of Ut water throughout the rooftop is significantly promoted, thereby preventing the deterioration of the insulation performance, and since there is no stagnant water, freezing damage to the holding concrete (5) is prevented.

Figures 3 and 4 show an embodiment in which the present invention is applied when the drain (9) is horizontally drawn, and 1i1NF4 is used instead of steel wire for the water conductive protective layer (8). be.

In the figure, parts equivalent to those of the above embodiment are given the same reference numerals.

(Effects of the Invention) According to the present invention, as described above, a heat insulating material is layered on the waterproof layer layered on the rooftop up to the end of the drain, and the heat insulating material and the end of the drain In an outdoor roof insulation waterproof layer formed by pouring concrete over the waterproof layer between the roof and the roof, a water conductive protective layer is deposited on the contact surface between the waterproof layer and the retaining concrete, and the water conductive protective layer is By extending the end part to the top of the water-repellent layer at the end of the drainage ditch, drainage of the entire roof area is significantly promoted, and the insulation performance is prevented from deteriorating, as well as preventing freezing damage to the holding concrete. be.

The invention according to claim 2 is characterized in that the water-conducting protective layer is constituted by upper and lower twin sanded roofings and corrosion-resistant reinforcing copper wire or W4\IM disposed between the two sanded roofing layers, and By attaching the roofing with asphalt compound with the sand side facing each other, the adhesive effect is achieved, and the smooth surface without sand adheres to the waterproof layer, which protects the waterproof layer and prevents stagnant water. It can be guided smoothly into the drain without resistance.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing one embodiment of a drainage device for an outdoor roof insulation waterproof layer according to the present invention, FIG. 2 is an enlarged view of the main part thereof, and FIGS. 3 and 4 are other embodiments of the present invention. For example, the third
Figure 4 is a plan view showing the relationship between the water guide groove and the roof drain, and Figure 5 is a vertical cross-sectional view of a conventional rooftop insulation and waterproof layer. 2a)...End part waterproofing layer, (4)...Insulation material, (5)...Pressure concrete,

Claims (1)

[Claims] 1. A heat insulating material is layered on the waterproof layer layered on the rooftop up to the end of the drain, and the waterproof layer is formed on the heat insulating material and between the heat insulating material and the end of the drain. In an outdoor roof insulation waterproof layer formed by layering holding concrete over layers, a water conduction protection whose end extends to the upper part of the waterproof layer caught in the end drainage ditch between the waterproof layer and the holding concrete layer. A drainage device for an outdoor rooftop insulation waterproof layer, characterized by being formed by layering layers. 2. The roof insulation and waterproofing according to claim 1, wherein the protective layer is constituted by a sandwich layer made of copper wire or copper mesh as a core material, roofing layers with sand on top and bottom, and sand surfaces facing each other and bonded with asphalt compound. Drainage device in layers.