JP2944930B2 - Insulation waterproofing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal insulation and waterproofing method applied to the roof of a building or the like.

[0002]

2. Description of the Related Art Conventionally, a waterproof layer such as an asphalt waterproof sheet or a synthetic resin waterproof sheet is laid and adhered on a concrete ground surface of a building roof to form a waterproof layer.
A heat insulating layer such as a polystyrene foam plate is laid on the upper surface and laminated and adhered to form a heat insulating layer, and an insulating sheet made of a woven or non-woven fabric is applied on the upper surface to the upper surface of the sectional layer. A heat-insulating and waterproofing method of laying out and adhering via an adhesive and further placing a pressing protective layer of concrete or mortar on the upper surface thereof has been performed.

[0003]

In the above-mentioned heat-insulating waterproofing method, a polystyrene heat-insulating plate, which is lightweight and has excellent heat insulating properties, is particularly preferably used as the heat-insulating plate. However, on the other hand, the polystyrene insulation board is thermally weak, melts at a temperature of 150 ° C. or more, and easily dissolves in the organic solvent contained in the solvent type adhesive, so that it is adhered to the upper surface of the waterproof layer. In this case, after the temperature of the high-temperature molten asphalt applied to the upper surface is lowered to 150 ° C. or less, the adhesive is adhered. Dissolution is avoided, and good laying of the heat insulating plate is obtained.However, in order to lay the insulating sheet on the upper surface of the heat insulating layer thus formed, the laid polystyrene heat insulating plate is required. On the top of
Since it is necessary to apply high-temperature molten asphalt or a solvent-type adhesive, it is not possible to avoid melting or melting of the heat insulating plate due to the high heat or the solvent. Therefore, when using molten asphalt as an adhesive, the temperature must be lowered to 150 ° C. or lower. If the temperature is too low, the viscosity of the asphalt becomes too high, and the operation becomes extremely difficult. In the case of a solvent-type adhesive, the heat insulating performance is reduced because the polystyrene foam cells are partially dissolved by the solvent. Therefore, when an emulsion-type adhesive is used instead of the solvent-type adhesive, not only the drying time becomes significantly longer, but also the insulating sheet may be scattered by the wind before being bonded and fixed to the heat insulating plate. There is also. Therefore, it is desirable to eliminate the various inconveniences of the above-mentioned conventional insulation and waterproofing method, and to simply and efficiently lay and fix the insulation sheet on the insulation layer.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned disadvantages of the conventional heat-insulating and waterproofing method and to achieve the above-mentioned demands, the heat-insulating and waterproofing method of the present invention is formed by laying and attaching a waterproof sheet on a ground surface. A heat insulating plate is laid on and adhered to the upper surface of the waterproof layer to form a heat insulating layer, an insulating sheet is laid on the upper surface of the heat insulating layer to form the laid surface, and separately prepared, both ends in the longitudinal direction. Bent portions for bending into a U-shaped member, each of the bent ends of the bent portions being formed with a piercing point, and a locking projection provided at an intermediate portion thereof. Using a large number of fasteners formed on the laying surface of the insulating sheet, with both the piercing and locking bent ends of each of the fasteners facing downward at appropriate intervals. The corresponding insulating plate is pierced and pierced and locked to fix the laying surface of the insulating sheet, and then fixed. Characterized by pouring a protective layer pressing on the laying surface of the insulating sheet.

[0005] In this case, the depth of the piercing and locking of both the piercing and locking ends of the fixture with respect to the heat insulating plate is such that the tip of the locking projection is at least 5 mm deep from the upper surface of the heat insulating plate. When the piercing point is located at least 5 mm away from the lower surface of the heat insulating plate, a heat bridge is formed to ensure that the piercing lock is maintained without lowering the heat insulating performance of the heat insulating plate. Then, the fixing of the insulating sheet laying surface is secured.

[0006]

Next, an embodiment of the present invention will be described with reference to the accompanying drawings. FIGS. 1 and 2 show the case where the heat insulation and waterproofing method of the present invention is applied to a building, for example, the roof of a building. In the drawing, reference numeral 1 denotes a base made of a concrete slab on the roof, According to a conventional method, a waterproof layer 2 and a heat insulating layer 3 are sequentially provided on the upper surface thereof. That is, the waterproof layer 2
A waterproof sheet 2a such as a synthetic resin sheet such as asphalt roofing or PVC is formed by laying out and attaching the waterproof sheet 2a.
A waterproof sheet 2a made of asphalt roofing wound in a roll shape is unwound and pressed and adhered to one surface of a base material via an adhesive surface made of rubber asphalt or the like on its back surface, and the adjacent waterproof sheets 2a, 2a are successively attached. The waterproof layer 2 is formed on the entire surface of the base 1 by laying and attaching the edges in the length direction with a small width overlap or abutting. The heat-insulating layer 3 provided on the upper surface of the waterproof layer 2 includes a plurality of square or rectangular square heat-insulating plates 3a. It is formed by laying the edges against each other and arranging them, and partially sticking them to the upper surface of the waterproof layer 2 via a desired adhesive applied in a dotted manner. As the heat insulating plate 3a, a synthetic resin foam plate is preferable, but is not limited thereto, and a known heat insulating plate made of a desired material can be used. A heat insulating plate 3a made of a polystyrene foam plate having excellent characteristics was used. Its thickness is 20
の も の 50 mm are commonly used. When the heat insulating plate 3a is attached to the upper surface of the waterproof layer 2 using a molten asphalt as an adhesive, a high-temperature molten asphalt applied to the entire upper surface of the waterproof layer 2 or in a dot-like manner is used. ° C
When performed below, when using a solvent-type adhesive, by performing after the solvent in the coating layer is removed by evaporation, good adhesion can be obtained without melting or dissolving the heat insulating plate .

According to the present invention, when laying and fixing an insulating sheet on the upper surface of the above-mentioned heat insulating layer 3, the use of a conventional adhesive is dispensed with, and instead, a fixture of the present invention described later is used. Is used to easily and highly efficiently fix. In the drawing, reference numeral 4 denotes an insulating sheet surface formed by sequentially laying out insulating sheets 4a. In the example shown in the drawing, a case is shown in which a large number of insulating sheets 4a are laid and arranged, and the insulating sheets 4a, 4a adjacent to each other are laid one after another with a slight overlap. The purpose of use of the insulating sheet 4a is, as is well known, that when the presser protective layer is formed by directly casting concrete or mortar on the upper surface of the heat insulating layer 3, the heat insulating plate 3a is damaged by the presser protective layer. This is for preventing the inconvenience of receiving heat or entering the joints of the adjacent heat insulating plates 3a, 3a, 3a. Generally, as the insulating sheet 4a, a synthetic resin film such as a polyethylene film having a thickness of 0.15 mm to 0.3 mm or a flat yarn cloth made of polypropylene or polyethylene of about 70 g / m ² is used. A woven or non-woven fabric having a similar thickness may be used. Preferably, such an insulating sheet 4a is prepared in the form of a roll, and the adjacent insulating sheets are laid so as to overlap each other by about 50 mm.

According to the present invention, while laying the insulating sheets 4a or after finishing the laying, a large number of the piercing and locking fixtures 5 of the present invention prepared in advance are used to set the predetermined interval. Piercing and locking the bent ends 5a, 5a of both ends of the fixing tool 5 from above on each insulating sheet 4a to the corresponding heat insulating plate 3a,
The insulating sheet laying surface 4 is fixed on the upper surface of the heat insulating layer 3. It is sufficient that the spacing between the adjacent fixtures 5 and 5 is 50 cm in both the length direction and the width direction. in this case,
The fixing tool 5 is pierced into the overlapping portion of the adjacent insulating sheets 4a, 4a at the above-mentioned fixed interval, and
a, 4a It is preferable to fix the overlapping edge.

As shown in FIG. 3, the fixing device 5 of the present invention is made of a metal or synthetic resin member, and its longitudinal ends 5a, 5a are positioned with respect to an intermediate main body 5b. The bent ends 5a, 5a are bent at right angles to form a U-shaped member, and each of the bent ends 5a, 5a has its tip formed at a piercing point 5a1 and a locking projection 5a2 provided at an intermediate portion thereof. It is formed on the bending end portions 5a for passing and locking.

The fixing member 5 can be made of stainless steel, galvanized steel, or the like as a metal member, or a molded material of polyethylene, polypropylene, polyvinyl chloride, nylon, or the like as a synthetic resin member. Further, a metal material laminated with a synthetic resin coating can also be used.

The fixing member 5 is made of a plate-like member or a rod-like member such as a square bar or a round bar.
When the thickness is in the range of mm to 150 mm, it is generally convenient to carry in a hand and pierce the heat insulating plate with human power or a hammer. In the case of a plate-like member, the thickness is 0.2 to 1 m
m and a width of 10 mm to 20 mm is generally preferable. In the case of a rod-shaped member, a thickness of 2 mm to 5 mm is convenient for use and handling.

More specifically, as an embodiment of the fixing tool 5, for example, those shown in FIGS. 3 (a), 3 (b) and 3 (c) are selectively used. That is, the fixture 5 of FIG. 3 (a) is formed by bending a metal plate at both ends and bending both ends 5a, 5a at right angles to the main body 5b and downward in the figure. The dimensions of the U-shaped plate member are 0.5 mm in thickness, 15 mm in width, 100 mm in length of the main portion, the height of the downward bent ends 5a, 5a at both ends is 15 mm, and the tip is an acute angle. Into a sharp piercing point 5a1 whose tip is sharpened at an acute angle, the middle of the bent ends 5a, 5a at both ends is cut and raised inside, and locking claws 5a2, 5a2 projecting obliquely upward are provided. It is. The dimensions of the fixture 5 in FIG. 3B are as shown in FIG.
Fixing tool 5 shown in FIG.
a2 is replaced with the cut-and-raised locking claw of the fixture 5 shown in FIG. 3 (a), and both bent ends 5a, 5a are formed by molding a synthetic resin material.
And wedge-shaped locking projections 5a2, 5a2 that gradually become thicker toward the upper end that is inclined outward and obliquely upward. The fixture 5 shown in FIG. 3 (c) is made of a rod-shaped member instead of the above-mentioned plate-shaped member. The thickness of the round bar, that is, the diameter is 5 mm, and the length is 130 mm.
Is formed by bending both ends 15 mm from the end at a right angle to the main body 5b and downward in the drawing, and the tip 5a1 is sharpened in a conical shape, and the locking projections 5a2 are formed. 5a2 is used for forming the fixing tool 5,
Wedge-shaped locking projections 5a2, 5a2 inclined obliquely upward from the inner surface integrally with the bent ends 5a, 5a.
It is molded into.

Thus, for example, a large number of the fixtures 5 shown in FIG. 3 (a) are prepared, and the two bent ends 5a, 5a, with the tips 5a1, 5a1 facing downward, are insulated from above the insulating sheet 4a. The plate 3a is pierced until the main body 5b comes into contact with the surface of the sheet 4a. If so, the locking projection 5a
2, 5a2, the heat insulating plate 3 smoothly with its upward inclined surface.
a and the upper end surface thereof is locked by the flesh of the heat insulating plate 3a, so that the fixing tool 5 does not rise upward from the surface of the insulating sheet 4 and the main body 5b is Since the insulating sheet laying surface 4 is stably and firmly pressed and fixed to the heat insulating layer 3, it is ensured that the insulating sheet laying surface 4 is stably and firmly fixed. In this case, the depth of the piercing engagement of the both bent ends 5a, 5a of the fixture 5 is determined by the engagement projections 5a.
It is preferable that the tip of 2,5a2 be located at a depth of at least 5 mm from the upper surface of the heat insulating plate 3a. Thereby, the piercing engagement with the heat insulating plate 3a is favorably performed, and the fixing of the insulating sheet laying surface 4 to the heat insulating layer 3 is reliably performed. In the example shown in FIG.
The locking projections 5 of the two bent ends 5a, 5a having a diameter of 5 mm.
The tips of a2 and 5a2 were located at a depth of 5 mm from the upper surface of the heat insulating plate 3. In short, when the fixing tool 5 is pierced into the heat insulating plate 3a as described above, regardless of the thickness of the heat insulating plate 3a, the depth at which the locking projection 7 sufficiently works inside the heat insulating plate 3a. It is enough if it is possible to get in and secure stable locking. In this case, when the fixing tool 5 is made of metal in particular, when the fixing tool 5 pierces the heat insulating plate 3a, the sharp ends 5a1 and 5a1 of the both bent ends 5a and 5a are connected to the heat insulating plate 5a.
If the fixing tool 5 is too deep to reach near the lower surface, the fixing tool 5 acts as a heat bridge, heat from the presser protection layer is easily transmitted to the waterproof layer 2a, and the heat insulating performance of the heat insulating plate 5a may be reduced. . In consideration of this point, the tips 5a1 and 5a1 are at least 5 inches from the lower surface of the heat insulating plate 5a.
By leaving the heat insulating plate 5 mm apart, the heat bridge effect can be prevented, and the heat insulating performance of the heat insulating plate 5a can be favorably maintained.

In this manner, the multiple fixtures 5 of the present invention
After fixing the insulating sheet laying surface 4 on the upper surface of the heat insulating layer 3 by using the method described above, concrete or mortar is cast on the upper surface by a conventional method to form the pressing protective layer 6 having a desired thickness. Complete the insulation and waterproofing work of the present invention.

As is clear from the above, the presser protective layer 6
After forming the insulating sheet, the insulating sheet laying surface 4 is
Since the insulating sheet laying surface 4 does not peel off the insulating sheet 4b due to wind or the like until the protective layer 6 is cast and formed, the fixing tool 5 is used. The insulation sheet laying surface 4 is fixed by the protective layer 6.
It suffices if it can be secured for a short period of time before casting and forming, and no continuous fixing force is required thereafter.

In the above embodiment, the case where the fixing tool 5 shown in FIG. 3A is used is shown, but the fixing tool 5 shown in FIG.
Alternatively, the same locking and fixing effect can be obtained by using the fixing tool 5 shown in FIG. Thus, in particular, each of the locking projections 5
Since a2 is formed as a triangular protrusion having an obliquely upward slope extending to the upper end, each fixture 5 is pierced smoothly, but prevents the fixture 5 from moving upward. What can be done is the fixture 5 shown in FIG.
Is the same as

[0018]

Next, a more detailed embodiment will be described. A number of fixtures shown in FIG. 2A made of galvanized steel sheet are prepared and prepared. That is, thickness 0.3 mm, width 10 mm, length 13
A large number of 0 mm galvanized steel plate-like members were prepared, and each end of each plate-like member was 15 mm from the tip.
Is bent at a right angle in the same direction with respect to the main portion to form a U-shaped plate-like member.
It is formed at a piercing point of an angle of 0 ° and has a width of 2 m on the central axis of each bent end and in the vicinity of the point.
m, 5 mm in length, cut and raised leaving one side close to the tip, inward of the plate and approximately 30 ° to the plate surface
As shown in FIG. 2 (a), a large number of fixtures having locking projections made of locking claws protruded upward and inclined as shown in FIG. On the other hand, asphalt roofing was laid out and adhered to a 30 m ² concrete base in accordance with a conventional method to form a waterproof layer, and was formed on the upper surface of the waterproof layer by an extrusion method having a thickness of 30 mm and a width of 910 mm. A polystyrene insulating board is coated on the upper surface of the waterproof layer with a molten asphalt of 200 ° C. or more by a comb iron, and when the temperature of the applied asphalt drops to 100 to 150 ° C., the adjacent insulating boards are measured. Were affixed to the upper surface of the waterproof layer while being laid side by side with each other to form a heat insulating layer. Next, on the upper surface of the heat insulating layer, an insulating sheet made of a 1 m-wide polyethylene flat yarn cloth (manufactured by Nissin Kogyo Co., Ltd., trade name: PT cloth, unit mass: 70 g / m ² ) is stacked on adjacent sheets. To 50 mm, after laying and forming an insulating sheet laying surface, using the above-mentioned fixture, from the top of the insulating sheet laying surface in the width direction, both in the length direction at an interval of about 50 cm. Each fixing device was pierced into its corresponding heat insulating plate with its bent end portion facing downward until its main body was pressed against the sheet surface to fix the insulating sheet laying surface to the heat insulating layer surface. Next, concrete was cast on the upper surface to form a presser protective layer having a thickness of 80 mm, and the heat insulation and waterproofing method of the present invention was completed.

[0019]

As described above, according to the heat-insulating and waterproofing method of the present invention, the waterproof layer and the heat-insulating layer are formed on the upper surface of the base, and then the bent ends for piercing and locking are formed at both ends separately prepared. Using a large number of tools, laying a large number of insulating sheets on the upper surface of the heat insulating layer and piercing the heat insulating layer at a predetermined interval from the insulating sheet laying surface to lay the insulating sheet. Since the surface is fixed to the upper surface of the heat insulating layer, the inconvenience of laying and fixing the insulating sheet through the adhesive applied to the upper surface of the conventional heat insulating layer is eliminated, and the fixing work is facilitated. , It can be performed quickly, and the insulation and waterproofing work can be completed quickly and efficiently. Even if a polystyrene insulation board is used as the insulation board, the quality is not degraded by heat or solvent. This has the effect of securing a heat insulating layer.

[Brief description of the drawings]

FIG. 1 is a perspective view in which a part of a heat-insulating and waterproofing construction body constituted according to an example of the present invention is cut off.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 (a) is a perspective view of an embodiment of the fixing device of the present invention.

FIG. 3 (b) is a perspective view of another embodiment of the fixture of the present invention.

FIG. 3 (c) is a perspective view of still another embodiment of the fixture of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Base 2 Waterproof layer 2a Waterproof sheet 3 Heat insulating layer 3a Heat insulating plate 4 Insulating sheet laying surface 4a Insulating sheet 5 Fixing tools 5a, 5a Penetrating and locking bent end 5b Main part 5a1 Pointed end 5a2 Lock Projection 6 presser protection layer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04D 5/00 E04D 11/00

Claims (2)

(57) [Claims] 1. A heat insulating sheet is laid on the upper surface of a waterproof layer formed by laying and attaching a waterproof sheet on the lower ground, and an insulating sheet is laid on the upper surface of the heat insulating layer. The laying surface is formed side by side, and separately prepared, both ends in the length direction are bent to form a U-shaped member, and the respective ends of the both bent ends are formed as piercing tips, and Using a large number of fasteners formed at the bent end portion for piercing and locking provided with locking projections at the intermediate portion, from the laying surface of the insulating sheet, With the bent ends for both the piercing and locking of the fixing tool facing downward, piercing and piercing and locking the corresponding heat insulating plate to fix the laying surface of the insulating sheet,
A heat-insulating and waterproofing method, wherein a presser protective layer is formed on the laying surface of the insulating sheet fixed below. 2. The depth of the piercing and locking of both the piercing and locking ends of the fixing tool with respect to the heat insulating plate is such that the tip of the locking projection has a depth of at least 5 mm from the upper surface of the heat insulating plate. And the piercing point is at least 5 m from the lower surface of the heat insulating plate.
2. The method according to claim 1, wherein the insulation and waterproofing method is arranged at a distance of m.