JPH0522784B2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to an external rooftop insulation method, and in particular, a roof slab is covered with a heat insulating material and a protective block through a waterproof layer on the upper surface side of a concrete slab constituting a roof slab. Regarding external roof insulation method.

Technical Background of the Invention and Problems Thereto Conventionally, rooftop insulation structures have often been installed on the rooftops of concrete buildings for the purpose of protecting the roof slab and stabilizing the indoor environment. Particularly in recent years, external rooftop insulation structures have been frequently used in which the upper surface of a roof slab is covered with a heat insulating material and a protective block. This rooftop exterior insulation structure has a waterproof layer installed on a concrete slab constituting the roof slab, covered with a heat insulating material, and a protective block covering the upper part of the heat insulating material.

Among the various construction methods for such outdoor rooftop insulation structures,
Recently, various so-called dry construction methods have been proposed, which enable the installation of a heat insulating structure on the roof of an already constructed building. When installing a heat insulating structure using the dry method, it is common to use an adjuster (or bridister) that adjusts the height of the heat insulating structure to accommodate the unevenness of the concrete slab. By adjusting the height using such an adjuster, the surface of the heat insulating structure can be kept horizontal.
Moreover, the appearance can be improved.

For example, as shown in FIG. 3, first, a plurality of adjusters 3 for height adjustment are placed on a waterproof layer 2 installed on a concrete slab 1, separated by a predetermined distance from each other. A plurality of small plate-shaped heat insulating materials 5 are attached to the base leg portion 4 so as to span over them. Furthermore, a plurality of protective blocks 7 in the form of small plate pieces are attached to the support portion 6 of each adjuster 3 provided so as to protrude above each of the above-mentioned heat insulating materials 5 so as to span over the support portion 6 of each adjuster 3. That is, the protection block 7
It covers the top of the.

However, in such a conventional external roof insulation structure, an air layer 8 is formed between the heat insulating material 5 and the waterproof layer 2. For this reason, although it is possible to obtain a heat shielding effect to some extent in the summer, there is a problem that air flow is generated in the air layer 8 in the winter, making it impossible to obtain a sufficient heat insulation effect.

Further, since the adjuster 3 is placed directly on the waterproof layer 2, the waterproof layer 2 may be damaged when a load from a person or the like is applied to the adjuster 3. That is, since the waterproof layer 2 is often made of asphalt or the like, it becomes soft and easily deforms under a small load in the summer. On the other hand, in the winter, the waterproof layer 2 may harden and become brittle and crack under the load.

OBJECTS OF THE INVENTION Therefore, an object of the present invention is to provide an outdoor roof insulation method that makes it possible to obtain a heat insulating structure having sufficient heat insulation properties and strength.

Summary of the Invention In order to achieve the above object, the outdoor rooftop insulation method according to the present invention includes placing a heat insulating material over the entire upper surface side of a waterproof layer installed on a concrete slab, and then placing a heat insulating material on the top surface of the heat insulating material. A plurality of adjusters equipped with height-adjustable support parts are placed at predetermined distances apart, and then a plurality of protective blocks in the form of small plates are attached so as to span over the support part of each adjuster. It is characterized in that the entire upper surface of the heat insulating material is covered with a protective block.

In the external rooftop insulation method with this structure, the insulation material and the concrete slab can be brought into close contact with each other on the entire surface, or almost no air layer is formed between the two. It is becoming more and more difficult to do so. This prevents the generation of air currents that reduce the heat insulation effect.

Further, the adjuster is placed on a heat insulating material having relatively high strength, and the load applied to the adjuster is directly borne by the heat insulating material. In other words, no local or direct load is applied to the weak waterproof layer.

Therefore, according to the present invention, it is possible to improve the insulation properties of the outdoor rooftop insulation structure, and
Its strength can also be increased, and reliability can be greatly improved.

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 shows an example of an adjuster for height adjustment used when carrying out the construction method according to the present invention.

The adjuster 10 includes a base leg 11 placed on a heat insulating layer 22 (to be described later), a threaded connection part 12 provided to protrude upward from the center of the base leg 11, and a threaded connection part 12 provided to protrude upward from the center of the base leg 11. The supporting portion 13 is screwed onto the upper side of the connecting portion 12.

The base leg portion 11 includes a boss portion 11b at the center of a disk-shaped substrate 11a, and a plurality of reinforcing plates 11c extend radially from the boss portion 11b.
A shaft 11d is erected at the center of the substrate 11a. This shaft body 11d is connected to the boss portion 11.
The screw connecting portion 12 is rotatably mounted on the shaft body 11d. In addition, a plurality of needle feet 11e are protruded from the bottom surface of the substrate 11a, if necessary, so that the needle feet 11e bite into the heat insulating side. Further, a bulge portion 11f is formed at the lower end portion of the boss portion 11b to prevent the screw connecting portion 12 from falling off.

The threaded connection portion 12 has a threaded portion 12 on its outer surface.
It is formed from a cylindrical body with a screw threaded thereon, and an elongated mounting hole 12c is formed through the shaft core thereof. The shaft body 11d described above is loosely fitted into the mounting hole 12c. As a result, the screw connecting portion 12 is rotatably supported within the boss portion 11b of the base leg portion 11. Further, a flange portion 12d is provided at the lower end portion of this screw connection portion 12, and this flange portion 12d is connected to the bulge portion 1 of the boss portion 11b.
It is installed within 1f. Thereby, the screw connecting portion 12 is held so as not to slip out upward.

Further, the upper end portion of the mounting hole 12c is formed into a fitting portion having a hexagonal cross section, for example, and by using a hexagonal screwdriver to fit into this, the screw connecting portion 12 can be rotated arbitrarily. It is becoming possible to do this.

A boss portion 13a of the support portion 13 is screwed into the upper end portion of the screw connection portion 12. Around this boss portion 13a, there is a protective block 2 which will be described later.
A disc-shaped support plate 13b on which 3 is placed.
are installed coaxially. Furthermore, four positioning plates 13c are provided on the support plate 13b and extend radially from the boss portion 13a. These four positioning plates 13c are arranged in a planar cross shape.

Further, the upper end opening of the boss portion 13a includes:
A cap 13d is screwed on. An entrance hole 13e for inserting a hexagonal screwdriver into the upper fitting portion of the mounting hole 12c is formed in the center of the cap 13d.

Next, an embodiment of the construction method according to the present invention using such an adjuster 10 will be described. As shown in FIG. 1, first, a waterproof layer 21 made of asphalt or the like is installed on the upper surface of a concrete slab 20 serving as a roof slab. Next, on this waterproof layer 21, a heat insulating material 2 made of expanded polystyrene or the like is placed.
2 will be placed in close contact with each other.

Thereafter, a plurality of the above-mentioned adjusters 10 are installed on the heat insulating material 22, separated from each other by a predetermined distance. At this time, the needle foot 11e provided on the bottom of the base leg 11 of each adjuster 10 is connected to the heat insulating material 22.
Since the adjuster 10 is placed so as to bite into the side, the adjuster 10 is reliably set without shifting.

Next, a plurality of protection blocks 23 in the form of small plate pieces are attached to the support plate 13b of each adjuster 10 so as to span over them, and the protection blocks 23 completely cover the upper part of the heat insulating material 22. The protection block 23 is made of cement, for example. Support plate 13b of one adjuster 10
One corner of each of the four small plate-shaped protection blocks 23 is received in the . Each of these protection blocks 23 is positioned and guided to its proper position by the four positioning plates 13c, and is properly laid out while being held by the adjuster 10 without shifting from each other.

If the concrete slab 20 is uneven and each protective block 23 is uneven and cannot be laid flat, use a hexagonal screwdriver to insert the block through the entrance hole 13e provided in the cap 13d or by removing the cap 13d. Part 1
3a into the mounting hole 12c of the screw connection part 12.
(See Figure 2). By turning the screw connecting part 12 in a predetermined direction with this hexagonal screwdriver, the entire support part 13 can be moved up and down. As a result, unevenness between the protection blocks 23 is eliminated, and a large number of protection blocks 23 can be moved up and down. can be easily laid out on a flat surface. In this way, unevenness can be adjusted with simple operations after construction.
It is very convenient compared to the conventional one.

In the heat insulating structure constructed using the above construction method, the heat insulating material 22 and the waterproof layer 21 are in close contact with each other on the entire surface, and almost no air layer is formed between them, or the unevenness of the waterproof layer is Therefore, even if an air layer is formed, it is small and can be ignored in terms of insulation engineering, and may even be advantageous in terms of insulation. This prevents the generation of air currents that would reduce the heat insulation effect.

Further, the adjuster 10 is placed on a heat insulating material 22 having relatively high strength.
The load applied to the insulation material 22
It is becoming possible to receive it at Therefore, no local or direct load is applied to the waterproof layer 21, which has no strength, and damage to the waterproof layer 21 is prevented.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a heat insulating structure illustrating an embodiment of the construction method according to the present invention, FIG. 2 is a vertical cross-sectional view showing an example of an adjuster for implementing the construction method according to the present invention, and FIG. is a vertical cross-sectional view showing the conventional construction method. 10... Adjuster, 20... Concrete slab, 21... Waterproof layer, 22... Heat insulation layer, 23...
...protection block.

Claims (1)

[Claims] 1. In the external rooftop insulation method, which covers the top side of the waterproof layer installed on the concrete slab that makes up the roof slab with a heat insulating material, and further covers the top of the heat insulating material with a protective block, After placing the insulation material tightly over the entire upper surface of the installed waterproof layer,
A plurality of adjusters each having a height-adjustable support part are placed on the top surface of the heat insulating material, separated by a predetermined distance.
Next, a plurality of protective blocks in the form of small plate pieces are attached to the support portion of each adjuster so as to span the entire upper surface of the heat insulating material. Construction method.