JPH0689585B2 - Vinyl chloride resin sheet waterproofing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a construction method of a vinyl chloride resin sheet used in the fields of civil engineering and the construction industry. INDUSTRIAL APPLICABILITY The present invention is an insulating construction method for partially fixing a vinyl chloride resin sheet to a waterproof base surface of a building, for fixing the waterproof sheet to a position inside a joint between the waterproof sheets without overlapping the fixing anchor directly above. After fixing by shifting the anchor, the end of the waterproof sheet is joined to the plate-shaped steel plate by welding, then the waterproof sheet is overlapped with the next sheet by 4 cm or more, and both welding and hot air fusion are used together. This is a waterproof construction method for ensuring reliable watertightness by joining and forming a smooth joint portion.

(Prior Art) Conventionally, when a waterproof sheet is applied to a roof surface such as concrete, an adhesive is applied to the ground surface or both the ground surface and the sheet surface, and the waterproof sheet is placed on the roof or under a structure such as a roof. It was fixed to the ground.

(Problems to be solved by the invention) Waterproofing after rain and snow When the underlying surface is in a wet state, it is necessary to wait until the underlying surface is dry, and when repairing the waterproof layer of concrete or other structures, existing waterproofing is required. It is often necessary to remove the layer or waterproof protective layer or repair the entire surface, which delays the construction period and increases the cost.

Further, the joint portion of the so-called waterproof insulation method is the portion A (3rd
As shown in the figure), the method of joining the waterproof sheets directly above the fixing material is common, but the height of the joint increases, so
When it is constructed on a flat roof, etc., it accumulates water pools and dust, which not only impairs the aesthetics of the roof surface, but also promotes partial deterioration of the waterproof sheet part of the deposited part, which reduces the durability of the waterproof layer. There was a problem.

(Means for Solving the Problem) The present invention is intended to solve the problems of the above-mentioned conventional method, and a waterproof layer is laid without using an adhesive,
To provide a waterproofing method that can be applied without delay even on wet ground after rain and snow, and can be applied with a waterproof layer even with repair work with almost no repair of the underlying surface is there.

In addition, by lowering the height of the joint of the waterproof layer, even on flat roofs, etc., a relatively long period of stable waterproof performance with less accumulation of rainwater and dust and less partial deterioration is obtained. Providing a construction method.

The present invention is an insulating construction method for partially fixing a vinyl chloride resin sheet to a waterproof base surface of a building, after fixing a plate-shaped steel sheet coated with vinyl chloride resin on the periphery using a fixing anchor, When fixing the vinyl resin sheet, a step of allocating the end of the sheet to the fixing metal fitting so as to be over by at least 4 cm and joining the fixing metal fitting and the sheet by solvent welding (hereinafter welding), Overlap the end of the next vinyl chloride resin sheet by 4 cm or more on the part that is at least 4 cm over the fixing metal fitting, and use this overlapping part for welding and hot air fusion (hereinafter referred to as fusion) A vinyl chloride resin sheet waterproofing method is characterized in that it comprises a step of joining and joining.

(Function) When the insulating construction method for partially fixing the vinyl chloride resin sheet of the present invention to the waterproof base surface is carried out, the steel plate of the plate coated with the vinyl chloride resin is arranged at intervals smaller than the sheet width of the waterproof sheet, That is, after fixing the waterproof sheets to positions inside the joints with each other using a fixing anchor, the ends of the waterproof sheets are joined to the plate-shaped steel plate by welding.

Next, the end portion of the waterproof sheet to be laid and the end portion of the waterproof sheet fixed to the steel plate are overlapped by 4 cm or more and joined together by welding and fusion. Further, by applying the sealing material to the small gap between the joints of the waterproof sheets, more reliable water tightness can be secured and a smooth joint can be formed.

The present invention, as a method of fixing the waterproof sheet to the waterproof base surface, a plate-shaped steel sheet coated with a vinyl chloride resin sheet is attached by a fixing anchor, and since the waterproof sheet is joined by welding and fusion, Even if the waterproof base surface is in a wet state, it can be applied without delay, and even during repair work, the waterproof layer can be applied with almost no repair of the base surface. Also, due to the difference in the joint position between the waterproof sheets and the position where the waterproof sheet is fixed to the base surface, the height of the joint is lower than that of the conventional method
The deterioration of the waterproof sheet due to the accumulation of rainwater and dust is reduced, and the durability of the waterproof layer is improved.

Due to the above-described effects, the construction period and cost can be reduced during waterproof construction, and further, the height of the joint portion of the waterproof sheet can be reduced to obtain a stable and clean waterproof layer in which rain, dust, etc. are less likely to collect.

(Example) The details of the present invention will be described below based on an example shown in the accompanying drawings.

1, 1A of FIG. 1 shows a general concrete flat roof. When the waterproof construction method of the present invention is applied to this concrete flat roof, first, the plate-shaped steel plate fixing material 2 is left at a position smaller than the width dimension of the waterproof sheet 3, that is, the joint width L with the next waterproof sheet 3. It is firmly attached to the position using the fixing anchor 4.

In addition, along the rising parapet entrance corner line of flat roof 1A,
The L-shaped steel plate fixing material 5 is attached. One end 3A of the waterproof sheet 3 is welded to the fixing material 5 in alignment with the corner line of the fixing material 5, and then the other end 3b is pulled and welded to the steel plate fixing material 2 to pass through the fixing material 2. A reliable waterproof layer is formed by welding and fusing the end portion 3C of the next waterproof sheet 3 to the end portion 3B. Similarly to the above, the waterproof sheets 3 and 3 are also welded to the corresponding fixing members 5 at the corners of the corresponding parapets in a tensilely strengthened state. In the figure, 6 is a fixing material at the end of the parapet, and 7 is a waterproof sheet applied to the rising portion, which is the same material as the waterproof sheet 3 at the horizontal portion. Reference numeral 8 denotes a sealing material that seals the end portion of the waterproof sheet.

(Effect of the Invention) The present invention is a method for fixing a waterproof sheet to a waterproof base surface of a building or the like, in which a plate-shaped steel plate-made fixing material 2 coated with a vinyl chloride resin sheet is attached by a fixing anchor 4, and Since the waterproof sheet 3 is joined by welding and fusion together, there is an advantage that reliable watertightness can be secured and a smooth joint portion can be configured. Even if the waterproof base surface is in a wet state, there is no delay. The construction is possible, and there is an advantage that the waterproof layer can be constructed with almost no repair of the base surface even in the repair work.

Also, due to the difference in the joint position between the waterproof sheets and the position where the waterproof sheet is fixed to the base surface, the height of the joint is lower than that of the conventional construction method, and the waterproof sheet due to the accumulation of rainwater or dust accumulates. The deterioration is reduced, and the effect of improving the durability of the waterproof layer is also obtained.

[Brief description of drawings]

 FIG. 1 is a partial sectional view of a flat roof constructed according to the present invention, FIG. 2 is an enlarged view of a waterproof sheet joint portion of the present invention, and FIG. 3 is an enlarged view of a conventional waterproof sheet joint portion. 1 ... Waterproof substrate, 1a ... Rising part waterproof substrate 2 ... Steel plate fixing plate coated with vinyl chloride resin around 3 ... Vinyl chloride resin sheet 3A ... Joint between waterproof sheet and steel plate fixing plate 3B, 3C ... Waterproof sheet Joint between waterproof sheet and waterproof sheet 4 ... Fixing anchor 5,6 ... L-shaped steel fixing plate coated with vinyl chloride resin around 7 ... Vinyl chloride resin sheet 8 ... Sealant

Claims (1)

[Claims] 1. In an insulating method for partially fixing a vinyl chloride resin sheet to a waterproof base surface of a building, after fixing a plate-shaped steel sheet coated with vinyl chloride resin on the periphery using a fixing anchor, When fixing the vinyl chloride resin sheet, a step of allocating the end of the sheet to the fixing metal fitting so as to be at least 4 cm extra, and joining the fixing metal fitting and the sheet by solvent welding, and then fixing the metal fitting On the other hand, a step of superposing 4 cm or more of the end of the next vinyl chloride resin sheet on the site that is at least 4 cm overexposed, and joining the superposed part by welding and hot air fusion together. Characteristic vinyl chloride resin sheet waterproofing method.