JPH0610021Y2 - Insulation mat for rooftop construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a heat insulating mat to be installed on the roof of a flat roof in concrete construction.

<Problems to be Solved by Conventional Techniques and Inventions> Conventionally, on a roof of a flat roof, after a waterproof layer is provided on a cast concrete slab, a vertical and horizontal length of 900 is formed by a foamed material such as polystyrene foam. × 1800 mm, a plate-shaped heat insulating material having a thickness of about 30 mm is arranged,
Roof finishing materials such as tiles are placed on the heat insulating material.

However, since one of the above heat insulating materials is formed in a large flat plate shape, when this is laid, the heat insulating material is rattled due to the unevenness of the concrete slab, and a large gap is formed in the boundary portion of the heat insulating material. There is a drawback that there is a problem.

Further, in the above heat insulating material, since the heat insulating material is almost adhered to the waterproof layer of the concrete slab, there is no ventilation between them, so that the dryness is poor and the heat insulating material absorbs water and the heat insulating effect is reduced. There is.

In view of the above-mentioned drawbacks, the present invention provides a rooftop heat insulating mat that can minimize the influence of unsteadiness that has occurred on the concrete slab and that ensures ventilation between the concrete slab and the concrete slab. The purpose is to

<Means for Solving the Problems> The gist of the heat insulating mat of the present invention for achieving the above object is to provide a plurality of independent convex portions on at least the lower surface of a flat plate-like foam, and further A plurality of grooves formed over the entire length in the horizontal direction and / or the vertical direction are provided on one surface or both surfaces, and the respective sections partitioned by the grooves are formed so as to be bendable to each other within the range of the groove width. The convex portions at the four corners on the lower surface side of the portion partitioned by are configured as legs.

<Operation> According to the above configuration, in the state in which the mat is laid, it is possible to improve ventilation between the concrete slab and the plurality of independent convex portions provided on the lower surface of the flat foam body.

Further, even if the concrete slab is uneven, the mat can be bent for each divided section by the plurality of grooves provided on one or both of the upper and lower surfaces. And since the convex portions at the four corners on the lower surface side of the portion partitioned by the groove are configured as legs, each portion partitioned by the groove can independently go along the concrete slab, and the heat insulation The mats can be placed along the top surface of the concrete slab so that it does not rattle comfortably.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

The heat insulating mat 1 for rooftop construction is mainly composed of a mat body 2 as a main body, which is formed in a square shape by a rigid foam such as expanded polystyrene. Then, on the upper surface side of the mat body 2, three grooves 3 are provided at equal intervals in both the vertical and horizontal directions. The groove 3 is provided at a depth of about 3/4 of its thickness from the upper surface, and is in a state of being connected by the remaining 1/4 portion below. This allows the portions 2'partitioned by the groove 3 to be slightly bent to each other. In this embodiment, the groove 3 near the corner of each portion 2'is provided so as to penetrate therethrough so that it can be bent more easily.

In addition, each of the partitioned portions 2'includes convex portions 4 that project downward and serve as legs (shown by broken lines in FIG. 1) at four corners on the lower surface side. On the side, there is provided a columnar convex portion 5 in which four vertical and horizontal portions are arranged for each partitioned portion 2 '. The projections 4 and 5 are integrally formed with the mat body 2, and the projections 4 and 5 are formed in an independent state so as not to be continuous with each other.

Next, the construction of the heat insulating mat 1 will be described.

The heat insulating mat 1 is spread over the entire upper surface of the waterproof sheet S on the concrete slab C cast as a flat roof by applying an adhesive to the convex portion 4 on the lower surface of the mat body 2.
Next, the roof finishing material D such as tiles is placed on the mat 1.

When the mat 1 is constructed as described above, for example, as shown in FIG. 2, even if the top surface of the concrete slab C and the waterproof sheet S is uneven, the grooves 3 provided in the mat body 2 cause Since the parts 2 ′ can independently run along the concrete slab C, the entire mat 1 can be arranged so as not to rattle due to partial unevenness.

In addition, by the convex portion 4 provided on the lower surface side of the mat body 2,
Since a space can be provided between the mat body 2 and the waterproof sheet S, ventilation is not hindered and a dry state can be obtained.

Therefore, according to this heat insulating mat 1, since the mat body 2 made of foam has a low thermal conductivity, it is possible to block solar heat and ensure the air permeability. Prevents water absorption of the heat insulating mat 1,
The heat insulating effect of the heat insulating mat 1 is not reduced.

Similarly, by the convex portion 5 provided on the upper surface of the mat body 2,
A space can be provided between the mat body 2 and the roof finishing material D, and the air permeability between the mat body 2 and the roof finishing material D can be maintained. Therefore, the air permeability of the upper and lower surfaces of the heat insulating mat 1 can be ensured.

As a specific example, the heat insulating mat 1 of this embodiment is made of a hard foam resin material such as expanded polystyrene or expanded polyurethane having an expansion ratio of about 40 times, and the outer size of the mat body 2 is 600 × 600 mm. The thickness of the mat main body 2 is 35 mm, and three grooves 3 are formed at intervals of 150 mm to divide the mat body 2 into 16 parts 2 '.
And, the convex portion 4 on the lower surface of the mat body 2 has a height of 20 mm,
The height of the convex portion 5 on the upper surface is about 10 mm.

The protrusions 4 and 5 are not limited to the above-mentioned examples, and may be formed in various shapes as long as the protrusions are independent and the air permeability can be secured.

In the above embodiment, the groove 3 formed in the mat body 2 is
Although an example in which the groove is formed from the upper surface side to three-fourths of the thickness is shown, it is also possible to form a groove on both upper and lower surfaces and leave a connecting portion of about one-fourth of the thickness near the center ( Second
It is also possible to form a groove on the lower surface side and leave the connecting portion on the upper surface side.

Further, in the above embodiment, if the upper and lower convex portions 4 and 5 are provided in the same shape, it is not necessary to judge the front and back of the mat 1 at the time of construction. In this case, if the groove is formed on both the upper and lower surfaces, the mat can be arranged in the same state regardless of which surface the mat is used, so that the mounting work can be performed more easily.

In addition, if the convex portion and the concave portion for combination are provided on the side surface of the mat 1, when the convex portion and the concave portion are fitted to each other in the aligned state, the heights of the mats 1 can be made uniform, and Can be placed without slipping or slipping.

Further, the groove 3 may be formed only in either the vertical direction or the horizontal direction, but it is provided in both the vertical and horizontal directions in order to effectively make it easy to follow the unevenness of the concrete slab. Is preferred.

<Effects of the Invention> As described above, the heat insulating mat for rooftop construction of the present invention is configured as described above, so that heat transfer to the concrete slab on the lower surface side is effectively blocked against heat radiation from above. In addition to being able to do so, it is possible to maintain air permeability between the concrete slab side and prevent water absorption of the heat insulating mat to improve the heat insulating effect.

In addition, even if the concrete slab is uneven, the mat can be bent in each part divided by a plurality of grooves, and the convex parts at the four corners on the lower surface side of the part divided by the grooves can be legged. Since it is constructed as a part, each part divided by the groove can independently go along the concrete slab. Therefore, it is possible to prevent the adverse effect that the entire top surface of the mat is steeply inclined due to the partial unevenness of the concrete slab, and the mat installation work is facilitated.

[Brief description of drawings]

FIG. 1 is a plan view showing a heat insulating mat for rooftop construction according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG. DESCRIPTION OF SYMBOLS 1 ... Insulation mat for rooftop construction, 2 ... Mat main body, 2 '... Partition part of mat, 3 ... Groove, 4 ... Convex part,

Claims (1)

[Scope of utility model registration request] 1. A flat foam body is provided with a plurality of independent convex portions on at least the lower surface, and a groove formed on one or both of the upper and lower surfaces over the entire length in the horizontal and / or vertical direction. A plurality of portions are provided, and each part partitioned by the groove is formed so as to be bendable with respect to each other within the range of the groove width. A heat insulating mat for rooftop construction.