JPH06248763A - Balcony-roof floor waterproofing structure for wooden house - Google Patents

Abstract

PURPOSE:To shorten a construction period while securing durability and further improve the heat insulating effect of a building. CONSTITUTION:In the waterproofing structure of the balcony and roof floor of a wooden house, an inclined plate like foam heat insulating member 13, waterproofing soft rubber material 14, rubber sheets 15, a hard material layer 16 and non-combustible material 18 are laminated on structural plywood disposed on the floor face of the balcony and the roof floor. The rubber sheets 15 are placed being mutually spaced on the soft rubber material layer 14 so as to form cavities 17 between the soft rubber material layer 14 and the hard material layer 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for a large balcony installed in a wooden house or a rooftop floor.

[0002]

2. Description of the Related Art In a conventional waterproof structure on a balcony or roof of a wooden house, generally, as shown in FIG.
A support material 2 is arranged on a structural plywood 1 arranged on the floor surface of a balcony or the like, and the structural plywood 1 is further stacked thereon, followed by a fireproof plate 3 and a hard layer made of FRP as a waterproof layer. Four
It has a laminated structure. Here, the support material 2 is arranged so that its dimensions increase in order from a small one to a large one in order to drain water from a balcony or the like, forming a so-called water gradient on the floor surface.

[0003]

However, the conventional waterproof structure for a wooden house balcony or the like has the following problems. First of all, in the conventional structure, since the waterproof function is only the outer hard layer made of FRP, in the wooden construction where the dimensional change due to the secular change and the dynamic strain against the earthquake are relatively large, Maintaining the waterproof function for many years was not enough. In addition, despite the possibility of temporary dew condensation in the lower part of the FRP layer due to changes in temperature and humidity during the day and night and high temperatures under hot summer heat, the treatment was insufficient.

Next, regarding heat insulation of a building, it is generally said that so-called outer heat insulation in which a portion near the outer surface of the building has a heat insulation function is more effective than so-called inner heat insulation in which a heat insulation function is provided inside. However, in the conventional waterproof structure, the heat insulating material itself has low strength in many cases, and therefore, disposing it inside the waterproof layer does not allow people to walk on it or put furniture on it. There is a problem with the strength of the balcony and rooftop that are used, and in the conventional structure, the heat insulation had to be internal heat insulation.

Thirdly, in the conventional method, the so-called water gradient is constructed by arranging the support materials having different sizes in the order of their sizes and stacking the structural plywood on the support materials. Materials of different sizes have to be prepared and arranged in order at predetermined positions so as not to mix them up, which tends to increase the number of construction steps.

The present invention solves the above problems and provides a balcony / rooftop waterproof structure for a wooden house which has durability, can shorten the construction period, and can further improve the heat insulating effect of the building. is there.

[0007]

In order to solve the above problems, the present invention according to claim 1 is a waterproof structure for a balcony of a wooden house or a roof, and a structural plywood arranged on the balcony or the floor of the roof, A plate-shaped foamed heat insulating member having a gradient, a soft rubber material for waterproofing, a rubber sheet, and a hard material and an incombustible material made of FRP are laminated, and the rubber sheet is formed on the soft rubber material layer. It is placed with a gap, whereby a gap is formed between the soft rubber material layer and the hard material layer.

According to the present invention of claim 2, a step of laying a plate-shaped foamed heat insulating member having a slope on a balcony for a wooden house or a structural plywood on a roof, on the layer of the foamed heat insulating member. A step of laying a soft rubber material for waterproofing, a step of laying a rubber sheet on the layer of the soft rubber material at a predetermined interval, and a layer and a void of the soft rubber material on the rubber sheet As described above, the waterproof construction method includes a step of laying a hard material made of FRP and a step of laying an incombustible material on the layer of the hard material.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a sectional view showing an embodiment in which the waterproof structure of the present invention is applied to a large balcony of a wooden house.

According to the present invention, as a waterproof floor for walking on a rooftop or the like, a composite plywood having a soft rubber layer and a hard material layer made of FRP is combined and waterproofed. Here, as shown in FIG. 1, the balcony 11 according to the present embodiment is arranged above the first-floor portion 21 of the building and enters and exits from the second-floor portion 22 of the building. And this waterproof structure is this balcony 11
Is installed on the floor 12 of The configuration will be described below according to the construction order.

FIG. 2 shows a partially enlarged sectional view of the floor portion 12. It should be noted that the same components as those of the conventional waterproof structure are denoted by the same reference numerals. First, in the lowermost layer is a structural plywood 1 similar to a conventional waterproof structure. Next, in the present invention, a plate-shaped foamed heat insulating member 13 such as Styrofoam (trade name) is laid on the structural plywood 1. Here, the upper surface of the foamed heat insulating member 13 is provided with a gradient, and by laying it on the structural plywood 1, a water gradient is formed on the floor portion 12. Further, due to the heat insulating effect, the building has a so-called external heat insulating structure.

Then, in the present invention, a soft rubber material 14 such as a gumlon base (trade name) for waterproofing is laid on the foamed heat insulating member 13. As a result, the first waterproof layer in this structure is formed. And this soft rubber material 14
Further, a rubber sheet 15 such as an altac sheet (trade name) is disposed on the above. In this embodiment, the rubber sheet 15 is in the form of a strip and is arranged on the soft rubber material 14 at regular intervals.

Next, in this structure, the hard material layer 16 made of FRP is formed on the rubber sheets 15 arranged at intervals as described above. As a result, the second waterproof layer in this structure is formed. Due to the existence of the hard material layer 16, in this structure, a composite waterproof structure is formed by the first waterproof layer of the soft rubber material 14 and the second waterproof layer. Here, since the hard material layer 16 is formed on the rubber sheets 15 arranged at intervals, a gap 17 is formed between the rubber sheet 15 and the hard material layer 16. Become. In this structure, air circulates between the layers due to the voids 17, and the hard material layer 16
Prevents heat cracking and blistering and improves dehumidification. In addition, the hard material layer 16 absorbs a weight impact caused by walking on a balcony or placing furniture on the foam heat insulating member 13
To reduce the burden on

On the other hand, in this embodiment, in addition to the above-mentioned structure, a noncombustible material 18 is further disposed on the hard material layer 16,
A light walk finish tile 19 is used to finish it. As a result, the balcony 11 has a nonflammable property and is improved in aesthetic appearance.

In this embodiment, the rubber sheet 1
Although 5 has a structure in which strips are used and arranged in stripes,
The arranging method is not limited to this, and the arranging method is not limited as long as the gap 17 can be formed between the hard material layer 16 and, for example, small pieces are scattered. Various methods can be adopted. In addition to the light walking tiles, it is also possible to form a roof garden with artificial soil as the finishing material, and a wide variety is possible.

[0016]

As described above, in the balcony / rooftop waterproof structure for a wooden house according to the present invention, since the composite waterproof structure is formed by the two layers of the soft rubber material and the hard material, the dynamic strain Even in a large wooden house, there is an effect that it is possible to provide a highly durable waterproof structure capable of exhibiting a waterproof effect for a long period of time.

Further, the structure in which the gap is formed between the two waterproof layers has an effect of allowing air to flow between the two layers. Therefore, it is possible to prevent thermal cracking and floating and improve moisture resistance.

Further, since the plate-shaped foamed heat insulating member having a slope is used, there is an effect that a water gradient is formed only by laying the foamed heat insulating member. Therefore, it is possible to reduce the labor required for external fabrication, shorten the construction period as compared with the conventional structure, and reduce the cost of the balcony itself.

In addition, there is an effect that the foam insulation member can insulate the building by a so-called outside insulation method. Therefore, energy saving can be expected as compared with the conventional internal heat insulation method.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment in which the waterproof structure of the present invention is applied to a large balcony of a wooden house.

FIG. 2 is a partially enlarged sectional view of the balcony of FIG.

FIG. 3 is a partially enlarged sectional view of a conventional waterproof structure.

[Explanation of symbols]

 1 Structural Plywood 2 Supporting Material 3 Fireproof Plate 4 Hard Layer 11 Balcony 12 Floor 13 Foam Insulation Member 14 Soft Rubber Material 15 Rubber Sheet 16 Hard Material Layer 17 Void 18 Noncombustible Material 19 Tile

Claims (2)

[Claims] 1. In a waterproof structure for a balcony or roof of a wooden house, a sloped plate-shaped foam heat insulating member and a soft rubber material for waterproofing are provided on structural plywood arranged on the balcony or roof floor. And a rubber sheet, and a hard material and an incombustible material made of FRP are laminated, and the rubber sheet is placed on the layer of the soft rubber material with a gap therebetween, and the soft rubber material layer and the hard material layer. A waterproof structure for balconies and rooftops for wooden houses, characterized by forming a gap between them. 2. A waterproofing method for a wooden house balcony / roof comprising the following steps. (A) The process of laying a plate-shaped foamed heat insulating member with a slope on the structural plywood arranged on the balcony of the wooden house or on the floor of the roof. (B) A step of laying a soft rubber material for waterproofing on the layer of the foamed heat insulating member. (C) A step of laying a rubber sheet on the layer of the soft rubber material at a predetermined interval. (D) A step of laying a hard material made of FRP on the rubber sheet by forming a layer and a void of the soft rubber material. (E) A step of laying a noncombustible material on the layer of the hard material.