JPH0663320B2 - Construction method of waterproof sheet for building - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for tensioning a waterproof sheet on a balcony, veranda, roof, etc. of a building.

(Prior Art) Conventionally, in a method known as a method of stretching a waterproof sheet, first, a peripheral fixing piece is fixed to a peripheral portion of a surface of a building to be waterproofed, and a central fixing piece is attached to a central portion. And then roll the tarpaulin rolled into a roll and spread it on the waterproof surface of the building while applying the adhesive to the upper surface of both fixing pieces, and stack the tarpaulin on top of it. There was a method.

However, in such a conventional method, the work of spreading the waterproof sheet and the work of applying the adhesive to the fixing piece must be performed in parallel, which makes the work difficult and the waterproof sheet has a wrinkled state. However, there is a problem in that the waterproof sheet cannot be freely expanded and contracted due to a temperature change, resulting in accelerated deterioration.

As a method for solving such a problem, for example, a method described in Japanese Patent Publication No. 58-36705 is known.

This conventional waterproof sheet tensioning method includes a step of fixing a peripheral fixing piece and a central fixing piece to a waterproof surface of a building, and after installing the fixing piece, a waterproof sheet is covered on the surface of the building to be waterproofed, The process of joining the sheet to the peripheral fixing piece, and after joining the waterproof sheet to the peripheral fixing piece, pierce the needle of the adhesive injector into the position on the central fixing piece of the waterproof sheet, and remove the adhesive in the adhesive injector. From the step of injecting between the waterproof sheet and the central fixing piece, and the step of spreading the adhesive injected between the waterproof sheet and the central fixing piece from above the waterproof sheet to join the waterproof sheet to the central fixing piece. It was a way to become.

(Problems to be Solved by the Invention) However, in such a conventional waterproof sheet tensioning method, in the adhesive injection step, the needle of the adhesive injector penetrates through the waterproof sheet and the central portion of the waterproof sheet. Since the adhesive was injected between the fixing piece and the fixing piece, there was a risk that rainwater would leak from the pinhole formed at the penetrating portion of the needle.

(Means for Solving Problems) The present invention has been made for the purpose of solving the above problems, and in order to achieve this object, the present invention proposes a surface of a building to be waterproofed. Of the above, the waterproof sheet is joined to the peripheral fixed portion of the waterproof surface, the waterproof sheet is joined to the peripheral fixed portion, and then the waterproof sheet is joined to the central fixed portion provided in the central portion of the waterproof surface. In the installation method, before bonding the waterproof sheet to the peripheral fixing portion, an adhesive is preliminarily installed on the upper surface of the central fixing portion in a state of preventing outflow to the outside, and after bonding the waterproof sheet to the peripheral fixing portion, the adhesive is applied. The waterproof sheet is joined to the central fixed portion while flowing out by pressing.

(Operation) Therefore, in the method for tensioning the waterproof sheet for buildings of the present invention,
Adhesive is pre-installed on the upper surface of the central fixing part provided in the central part of the waterproof surface of the building, in a state that prevents outflow to the outside. After joining the sheets and joining the waterproof sheet to the peripheral fixing part,
Since the waterproof sheet is joined to the central fixing portion while flowing out the adhesive to the outside by pressing, the waterproof sheet is stretched without wrinkling on the waterproof surface of the building without forming pinholes in the waterproof sheet. can do.

(Examples) Hereinafter, examples of the present invention will be described in detail with reference to the drawings. First, the first embodiment shown in FIGS. 1 to 9 will be described.

The installation of the waterproof sheet 2 on the building 1 is performed by the fixing piece installation process,
The adhesive installation process and the waterproof sheet joining process are performed in this order.

As a place where the waterproof sheet is stretched in the building 1, a lightweight cellular concrete plate (ALC plate), a balcony made of hard wood chip cement plate, a balcony, a roof, or the like can be considered.

First, in the fixing piece installation step, as shown in FIGS. 1 to 4, the surface of the building 1 to be waterproofed (hereinafter referred to as a waterproof surface).
This is a step of fixing the peripheral edge fixing piece (peripheral edge fixing portion) 4 and the central fixing piece (central fixing portion) 5 to the fixing member 3 with the fixture 7.

The peripheral fixing piece 4 is a pipe-shaped one and is framed and fixed to the peripheral portion of the waterproof surface 3, and the central fixing piece 5 is a disc-shaped one having a concave portion 6 formed in the central portion of the upper surface. It is used and fixed to a required portion of the waterproof surface 3 excluding the peripheral portion.

Further, the fixture 7 is formed with a cutout 8 at the lower end, and a bank lock or the like in which the cutout 8 is opened by screwing a screw 9 is used.

The central fixing piece 5 is fixed to the waterproof surface 3 in advance by inserting the elongated hole 10 into which the fixing tool 7 is inserted at the central fixing piece fixing position of the waterproof surface 3 and the recess 6 of the central fixing piece 5. Shallow hole 1
1 and 1 are overlapped and formed, and the fixture 7 is inserted into the long hole 10.
After inserting the central fixing piece 5 into the hole 11, the central fixing piece 5 is screwed into the fixing tool 7 from above the central fixing piece 5.

The next adhesive installation step is a step of injecting the adhesive 12 into the recess 6 of the central fixing piece 5 fixed to the waterproof surface 3 with a syringe, a dropper or the like (see FIG. 5).

When the waterproof sheet 2 is made of a soft vinyl chloride resin sheet and the central fixing piece 5 is made of a steel sheet whose surface is coated with vinyl chloride resin, the adhesive 12 is THF (tetrahydrofuran) which is a solvent for these. Is suitable, and an appropriate amount of the adhesive 12 injected into one central fixing piece 5 is 0.
It is about 7 m.

The next waterproof sheet joining step is a step of covering the entire waterproof surface 3 of the building 1 with the waterproof sheet 2 and joining the waterproof sheet 2 to the peripheral fixing piece 4 and the central fixing piece 5.

In this step, first, the waterproof sheet 2 is installed.

When a plurality of waterproof sheets 2 are spliced and joined together, as shown in FIG. 6, the end portions of adjacent waterproof sheets are arranged in a superposed state.

To join the waterproof sheet 2 to the peripheral fixing piece 4 and the central fixing piece 5, first, the waterproof sheet 2 and the peripheral fixing piece 4 are joined.

The waterproof sheet 2 and the peripheral edge fixing piece 4 are joined by the peripheral edge fixing piece 4
Adhesive is applied to and the waterproof sheet 2 is pressed against the adhesive application surface of the peripheral fixing piece 4.

The waterproof sheet 2 and the central fixing piece 5 are joined to each other by the peripheral fixing piece 4
This is performed after joining the waterproof sheet 2 over the entire length.

In addition, the work is performed by pressing the waterproof sheet 2 from above the central fixing piece 5 with a finger, and the pressing force of the finger presses the concave portion 6 of the central fixing piece 5.
This is performed while the adhesive 12 that has been poured into the recess is allowed to flow out of the recess 6 (see FIG. 9).

When joining a plurality of waterproof sheets 2, the overlapping portions of the adjacent waterproof sheets 2 are joined together with an adhesive while pulling the overlapping portions of the waterproof sheets 2, and finally the central fixing piece 5 is joined. .

Next, the second embodiment and the third and fourth embodiments will be described.

In describing the second to fourth embodiments, the first
Descriptions of steps similar to those in the embodiment will be omitted.

First, the second embodiment shown in FIGS. 10 and 11 will be described.

This embodiment is an example in which, in the adhesive installation step, the gelatin capsule 13 in which the adhesive 12 is encapsulated is adhered to the recess 6 of the central fixing piece 5 via the closed-cell foam body 14.

In the waterproof sheet joining step, the gelatin capsule 13 is pressed and crushed from above the waterproof sheet 2 with a finger, and the adhesive 12 is caused to flow out from the gelatin capsule 13 to join the back surface of the waterproof sheet 2 and the upper surface of the central fixing piece 5. .

The appropriate amount of the adhesive 12 enclosed in the gelatin capsule 13 is about 0.8 m.

Next, a third embodiment shown in FIGS. 12 and 13 will be described.

This embodiment is an example in which a ball 15 made of aluminum is fixed in the recess 6 of the central fixing piece 5, and the adhesive 12 is injected into the ball 15.

In the waterproof sheet joining step, the ball 15 is struck by a hammer from above the waterproof sheet 2 to flatten it, and the adhesive 12 injected into the ball 15 is allowed to flow out from the ball 15 to allow the back surface of the waterproof sheet 2 and the central fixing piece 5 to flow. And the upper surface of.

The appropriate amount of the adhesive 12 injected into the ball 15 is 0.8.
It is about m.

Finally, a fourth embodiment shown in FIGS. 14 and 15 will be described.

In this embodiment, in the adhesive installation step, the impregnating material 18 impregnated with the adhesive 12 and provided with the film 16 on the upper surface and the adhesive 17 on the lower surface is used as the recess 6 of the central fixing piece 5. This is an example of bonding to.

In the waterproof sheet installation step, the impregnating material 18 is pressed with a finger from above the waterproof sheet 2, and the adhesive 12 impregnated in the impregnating material 18 is caused to flow out from the side surface of the impregnating material 18 and fixed to the back surface and the center of the waterproof sheet 2. The upper surface of the piece 5 is joined.

As the impregnating material 18, paper, cotton, non-woven fabric, felt,
Cork etc. are considered.

Although the method of stretching the building waterproof sheet of the embodiment has been described above in detail, the specific method is not limited to this embodiment, and the method can be changed or changed within the range not changing the gist of the present invention. Even if there are additions and the like, they are included in the present invention.

For example, in the embodiment, after fixing the central fixing piece to the waterproof surface, the adhesive is injected into the concave portion of the central fixing piece, but after the adhesive is injected into the concave portion, the central fixing piece is placed on the waterproof surface with the adhesive installed. It may be fixed to.

Further, the types of the adhesive and the fixing member and the shape of the fixing piece are not limited to those shown in the embodiments.

(Effects of the Invention) As described above, in the method of tensioning a waterproof sheet for a structure of the present invention, in the method for stretching a waterproof sheet for a building, after the adhesive is installed on the central fixing portion fixed to the central portion of the waterproof surface of the building, the peripheral edge is provided. Since the waterproof sheet is joined to the fixed part and the waterproof sheet is joined to the peripheral fixed part, the waterproof sheet is joined to the central fixed part, so that the waterproof sheet does not have pinholes and the waterproof sheet does not have wrinkles or internal stress. It can be installed without any residue.

[Brief description of drawings]

FIG. 1 is a plan view showing a fixed piece installation state in a method for stretching a waterproof sheet for buildings according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line I-I of FIG. 1, and FIG. Sectional drawing showing the central fixing piece before fixing, FIG. 4 is a sectional view showing the central fixing piece in a fixed state, FIG. 5 is a sectional view showing the central fixing piece in the state of adhesive installation, and FIG. 6 is a waterproof sheet installation A plan view showing the state,
7 is a sectional view taken along the line II-II in FIG. 6, FIG. 8 is a sectional view showing a waterproof sheet joined state, FIG. 9 is a sectional view showing a main part A of FIG. 8, and FIG. A sectional view showing a central fixing piece in an adhesive installed state of a second embodiment of the invention, FIG. 11 is a sectional view of an essential part showing a waterproof sheet joining state of the second embodiment, and FIG. 12 is an adhesive of the third embodiment. Sectional drawing showing the central fixing piece in the installed state, FIG. 13 is a sectional view showing the waterproof sheet joining state of the third embodiment, and FIG. 14 is a sectional view showing the central fixing piece in the adhesive installation state of the fourth embodiment. FIG. 15 is a cross-sectional view showing the waterproof sheet joining state of the fourth embodiment. DESCRIPTION OF SYMBOLS 1 ... Building 2 ... Waterproof sheet 3 ... Surface to be waterproofed 4 ... Perimeter fixing piece (peripheral fixing portion) 5 ... Central fixing piece (center fixing portion) 12 ... Adhesive

Claims (1)

[Claims] 1. A waterproof sheet is joined to a peripheral fixing portion of a waterproof surface of a surface to be waterproofed of a building, and after joining the waterproof sheet to the peripheral fixing portion, a central fixing portion provided in a central portion of the waterproof surface. In the method of tensioning a waterproof sheet for a structure for joining a waterproof sheet, before joining the waterproof sheet to the peripheral fixing portion,
The adhesive is preliminarily installed on the upper surface of the central fixing portion in a state of preventing outflow to the outside, and after the waterproof sheet is bonded to the peripheral fixing portion, the waterproof sheet is bonded to the central fixing portion while flowing out the adhesive to the outside by pressing. A method of tensioning a waterproof sheet for a structure, which is characterized by the above.