JP2000034808A - Heat insulating and waterproof board and heat insulating and waterproof structure of roof using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save labor and execute a roofing work even in a light rainfall without generating building waste by forming the upper layer with glass fiber reinforced plastic to make a waterproof layer and forming ventilation holes opened at the four peripheral side edges in a heat insulating layer composed of intermediate and lower layers made of rigid and flexible foamed polystyrene. SOLUTION: The upper layer is formed of glass fiber reinforced plastic 2 to make a waterproof layer, and protrusive ribs 2a having a V-shaped section are longitudinally and laterally provided toward the intermediate heat insulating layer, at the lower end face. A drainage slope is formed on the whole surface from the central part to the four peripheral side edges, and the four peripheral side edges 1a are formed to have a stage lowered by one step. Heat insulating layers are formed with the intermediate layer made of rigid foamed polystyrene 4 and the lower layer made of flexible foamed polystyrene 5. A plurality of ventilation holes 6 having a rectangular section are formed to penetrate into the respective opposite side edges from the four peripheral side edges, at the part corresponding to the lower end of the intermediate layer. A square tabular heat insulating waterproof board 1 is laid to cover an existing waterproof layer at the frame body roof face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating and waterproofing board used for heat insulation and waterproofing of a roof in a concrete building and a wooden building and a heat insulating and waterproofing structure of a roof using the same.

[0002]

There are a number of conventional construction waterproofing methods such as an asphalt waterproofing hot method, a cooling method, an asphalt torch method, a paint film waterproofing method and a rubber sheet waterproofing method. Also, the conventional construction method at the site is complicated, it is a field processing type including two-liquid mixing work at the site work, it has various odors, variation in construction accuracy depending on the skill level of workers, new construction If so, the accuracy of the new building, which is the foundation of the waterproof layer, was a major factor in the formation of the waterproof layer. In the renovation work, removing the existing waterproof layer, applying a new base adjustment material, and forming the base layer required a lot of trouble and time. In addition, work was being carried out under a number of inconveniences, such as the inability to install a waterproof layer on wet ground due to rainfall, without stopping the generation of industrial waste, which has been raised as a social issue. .

[0003] The present invention has been developed in view of the above circumstances, and is a heat insulating and waterproof board which does not require labor and time, does not generate industrial waste, or does not generate odor on site, and uses the same. The purpose is to provide a heat insulation and waterproof structure for the roof.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to form a rectangular shape, apply a water gradient from the center to the four peripheral side edges, and lower the four peripheral side edges by one step. The upper part is made of glass fiber reinforced plastic and forms a waterproof layer, the middle part is made of hard expanded polystyrene, the lower part is made of soft expanded polystyrene, and the middle part and the lower part are joints. Without heat insulation layer, especially in the lower layer, it has a function to adjust the unevenness of the groundwork.In the heat insulation layer, ventilation holes are opened on the four surrounding side edges to form a heat insulation and waterproof board, and this board is installed on the roof surface. It was laid in.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a description will be given based on the illustrated embodiment. Reference numeral 1 indicates a heat insulating and waterproof board of the present invention. The heat insulation and waterproof board is formed in a rectangular plate shape, and the upper layer is formed of glass fiber reinforced plastic (hereinafter, referred to as FRP) 2 to form a waterproof layer. On the lower end surface of the waterproof layer, a rib 2a having a V-shaped protruding cross section is provided so as to extend in the vertical and horizontal directions toward a later-described middle heat insulating layer.
The entire surface is provided with a water gradient inclined from the center toward the four peripheral side edges, and the four peripheral joints (side edges) 1a are stepped down by one step, and embossed as a finishing layer. Processing 3 has been performed.

The middle layer is made of rigid expanded polystyrene 4. The lower layer is made of soft expanded polystyrene 5, and the middle layer and this lower layer constitute a heat insulating layer. A plurality of ventilation holes 6 having a rectangular cross section penetrating from the four peripheral side edge portions to the side edges facing each other are formed in a portion corresponding to the lower end of the middle layer portion. As shown, the heat insulating and waterproof board 1 is formed in a lattice shape in the middle of the thickness portion.

[0007] The above-mentioned heat-insulating waterproof board 1 is laid on the existing waterproof layer on the roof surface of the building body. A joining hardware is attached to the four peripheral side edges of the heat-insulating waterproof board 1. As shown in FIG. 5, this joint comprises a U-shaped holding metal fitting 7, a foam body 8, a holding lid 9 and an anchor bolt 10 made of stainless steel.

The U-shaped presser fitting 7 has a U-shaped concave portion 7a opening upward, and left and right pressing pieces 7b, 7b opening outward from the upper end of the concave portion 7a. A bolt hole 7c is formed in the bottom of the U-shaped recess 7a,
A plurality of round holes are also formed in the left and right holding pieces 7b, 7b. The foam 8 has a required thickness and has the U-shaped recess 7.
A bolt hole 8a communicating with the bolt hole 7c is formed in the center at the center. The holding lid 9 is provided with a U-shaped holding metal fitting 7.
It is formed in the shape of a rectangular plate large enough to be inserted horizontally into the U-shaped recess 7a, and a bolt hole 9a communicating with the bolt hole 7c and the bolt hole 8a is formed in the center.

The heat-insulating and waterproof board 1 is sequentially laid in parallel on the surface of the existing waterproof layer. As shown in FIG. 6, a holding member 7 has a concave portion between the adjacent heat-insulating and waterproof boards 1 and 1. 7a, and joints 1a, 1a of the waterproof boards 1, 1 are insulated by left and right holding pieces 7b, 7b.
While pressing down from above, the foam 8 is inserted into the recess a,
Furthermore, by inserting the holding lid 9 into the upper part and penetrating the anchor bolt 10 through the bolt holes 7c, 8a, 9a and the frame, the insulation and waterproof board 1 is spaced apart from each other on the roof surface (10 mm). And securely fixed vertically and horizontally in parallel.

The joints formed while maintaining the gap are filled with foam, and are further spread over the joint surfaces 1a, 1a between the joint surfaces and the heat-insulating waterproof boards 1, 1 adjacent to each other. An ultraviolet-curable FRP sheet 11 is adhered.

At a location close to the parapet A of the skeleton, the upper layer portion is made of FRP
In addition, the middle layer is formed of hard expanded polystyrene 4 and the lower layer is formed of soft expanded polystyrene 5, and a ventilation hole 6 communicating with the ventilation hole 6 of the heat insulating and waterproofing board 1 is formed to make the surface flat. Laying the formed heat insulation and waterproof board 12 separately from the roof surface to the inside of the parapet A, heat insulation,
An FRP lining 13 is provided on the surface of the waterproof board 12. In addition, a ventilation hole 6 is formed in the rising base of the parapet A.
Is provided with a deaeration cylinder 14 which communicates with the refrigeration system.

[0012]

Since the present invention has the above configuration, it has the following effects. (1) Because of the structure that can be put on the existing base, even if the waterproof base layer (existing waterproof layer, cinder concrete, skeleton) is wet, work is possible, and in the case of light rain that could not be considered by the conventional method However, construction is possible, and the weight per unit area is significantly reduced (about 1/10) as compared with the conventional asphalt waterproofing concrete holding method, and furthermore, construction waste material, which has become a social problem, is not produced.

(2) The heat insulation and waterproof board are unitized, and the upper layer is made of FRP, so that it has several times the strength and surface hardness as compared with other waterproof materials.
The middle layer is made of hard foamed polystyrene and the lower layer is made of soft foamed polystyrene.Because the insulation is set in advance in the processing factory, the product accuracy is high and the work is easier than the conventional method. It can be performed in 1/4 process, can save a lot of labor, and there is no variation in construction accuracy due to the skill level of workers.

(3) Heat insulation Since a large number of air holes are formed in the heat insulating layer portion of the waterproof board, the waterproof layer does not swell due to moisture vapor from the underlayer. Since the water gradient is formed toward the edge, there is no rain pool at the time of rainfall, and the joint part is lowered by one step, so it does not function as a rain gutter and keeps rain on the rooftop . In addition, since the waterproof layer made of glass fiber reinforced plastic is reinforced structurally with reinforcing ribs extending in the vertical and horizontal directions facing the heat insulating layer, the material itself, which is a drawback of glass fiber reinforced plastic, can be prevented from warping, Has a non-slip specification because it is embossed.

(4) Since the heat-insulating and waterproofing boards are joined to each other with a gap therebetween through a metal joint, it is possible to cope with the heat shrinkage of the heat-insulating portion or the FRP itself. Then, since an ultraviolet curing FRP sheet is attached to the joint portion to integrate the FRPs, the boards can be connected to each other to form a sealless waterproof layer.

(5) The heat insulating and waterproofing board is provided with anchor bolts that penetrate to the skeleton at each joint portion, so that wind resistance is improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a heat insulating and waterproofing board.

FIG. 2 is a front view of a heat insulating and waterproof board.

FIG. 3 is a plan view of a heat insulating and waterproof board.

FIG. 4 is a perspective view of a heat insulating and waterproof board.

FIG. 5 is an exploded perspective view of a metal joint.

FIG. 6 is a vertical cross-sectional view showing a mounting state of a metal joint.

FIG. 7 is a longitudinal sectional view showing a construction state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation and waterproof board 2 FRP 3 Emboss processing 4 Hard expanded polystyrene 5 Soft expanded polystyrene 6 Vent hole 7 Retainer 8 Foam 9 Retainer lid 10 Anchor bolt 11 FRP sheet 12 Thermal insulation and waterproof board 13 FRP lining 14 Deaeration cylinder

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04D 3/36 E04D 3/36 Q

Claims (9)

[Claims] 1. A square shape, a water gradient is applied from the center part to the four peripheral side edges, and the four peripheral side edges are lowered by one step to form a joint part. The upper layer part is made of glass fiber. Formed of plastic and made as a waterproof layer, the middle part is made of hard expanded polystyrene, the lower part is made of soft expanded polystyrene, the middle part and the lower part are made a heat insulating layer, and the heat insulating layer is on the four peripheral side edges A heat-insulating and waterproof board characterized by having an open vent. 2. The heat insulating and waterproofing device according to claim 1, wherein the ventilation holes are formed in a lattice shape in the middle layer portion so as to penetrate from the side edge portion to the other side edge portion facing each other. board. 3. The heat insulating and waterproofing device according to claim 1, wherein a rib is provided on a lower end surface of the waterproof layer formed of glass fiber reinforced plastic in a vertical and horizontal direction toward a middle heat insulating layer. board. 4. The heat insulating and waterproof board according to claim 3, wherein the rib is formed in a V-shaped cross section. 5. The heat insulating and waterproof board according to claim 1, wherein the surface finishing layer is embossed. 6. A heat-insulating and waterproof board according to any one of claims 1, 2, 3, 4 and 5, which is adjacent to each other by fitting a holding member having a U-shaped concave portion opened at an upper portion to four peripheral side edges. The insulation and waterproof boards are joined and arranged in parallel while maintaining a gap.The foam and the holding lid are inserted into the recesses of the holding fitting, and the holding lid, the foam and the holding fitting are penetrated and the roof surface of the building Roof insulation and waterproof structure characterized by the installation of anchor bolts that reach up to and the insulation layer of the roof being covered with a waterproof board. 7. A holding piece is formed by opening the left and right upper ends of the U-shaped concave portion of the holding metal member outwardly, and the holding piece presses the joint portion of the heat insulating and waterproof board from above. The heat insulating and waterproof structure for a roof according to claim 6. 8. The heat insulating and waterproofing structure for a roof according to claim 6, wherein a glass fiber reinforced plastic sheet is attached to cover a joint portion of the heat insulating and waterproofing board. 9. In a portion of the skeleton close to the parapet,
The upper layer is formed of glass fiber reinforced plastic, the middle layer is formed of hard expanded polystyrene, the lower layer is formed of soft expanded polystyrene, and a separate heat insulation and waterproof board with a flat surface with perforation holes is laid. 7. The parapet portion is provided with a glass fiber reinforced plastic lining on the surface of the heat insulating and waterproof board and a degassing cylinder communicating with a vent hole from the roof surface to the inside of the parapet. , 7 or 8, the roof insulation and waterproof structure.