JP2939838B2 - Stretching method of floor material on flat roof, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for extending a floor material on a waterproof roof or a flat roof.

[0002]

2. Description of the Related Art Conventionally, for example, on the roof of a concrete building, that is, on the roof of a building, or on the outer corridor of a condominium, on a veranda, etc., a waterproof sheet made of a synthetic resin such as soft polyvinyl chloride is provided only at a minimum necessary portion. It is joined to a joint that is fixed to the wall surface to be waterproofed, and the remaining part is left as it is. According to this insulating method, waterproofing can be reliably performed without being affected by the unevenness of the concrete wall surface during waterproofing.

[0003] In a flat roof with such a waterproof sheet stretched, the waterproof sheet is broken when a person walks or performs sports on the upper surface of the waterproof sheet in this state. A floor material having a required strength is stuck on the upper surface so that a person can walk or the like.

[0004]

However, according to the conventional method, the floor material is entirely adhered to the upper surface of the waterproof sheet using an epoxy resin adhesive, so that the workability is very poor, and the work time is extremely short. Epoxy resin adhesives are long and have poor water resistance and heat resistance, making it difficult to maintain long-term adhesiveness. When the air layer generated during the expansion is inflated, the uneven shape is conspicuous and the appearance is very poor. Conventionally, since the floor material is entirely adhered to the upper surface of the waterproof sheet, if the floor material is damaged by use, it is very difficult to change the work, and the work cannot be partially or completely changed. There was a problem.

[0005] An object of the present invention is to solve the above-mentioned problems of the prior art, and to install flooring material on the upper surface of a flat roof with a waterproof sheet and the like, which is very excellent in workability and greatly reduces the work time. It can be shortened and has good water resistance and heat resistance, and can maintain excellent adhesiveness for a long time,
In addition, the width of the joint at the periphery of the floor material is constant, the appearance after the floor material is stretched is very beautiful, and the uneven shape at the joint step of the waterproof sheet is almost inconspicuous, making it easier and easier to replace It is an object of the present invention to provide a method of extending a floor material in a flat roof with a waterproof sheet and the like, which can finish the finishing neatly.

[0006]

In order to achieve the above object, the first invention is to provide a waterproof sheet made of a soft polyvinyl chloride on the surface of a wall to be waterproofed, and to provide a peripheral portion or the like with a waterproof sheet. For flat roofs, etc. where only the part is joined to the joined body and the remaining most part is left standing, a long floor material with the required width and polyvinyl chloride as the main material is required on the upper surface of the waterproof sheet. When cutting to length and laying and stretching, glue prevention tape is stuck on the inside of each flooring, leaving the part to be bonded at the periphery, and then the flooring periphery After applying a tetrahydrofuran-based solvent-based adhesive to a portion to be bonded, the bonded portion is bonded to a waterproof sheet via a bonding layer made of a solvent-type adhesive. The gist is the method of stretching the timber.

According to a second aspect of the present invention, a non-joining joint tape is attached to a lower surface of a peripheral portion of the floor material when the floor material is stretched, and a bonded portion having a required width is formed. A tape for preventing adhesive inflow is attached to the inside, and a tetrahydrofuran-based solvent-based adhesive is applied to the portion to be bonded near the periphery of the flooring material, and the bonded portion is bonded to the bonding layer using the solvent-type adhesive. The gist of the present invention is a method of stretching floor materials on a waterproof sheet-stretched flat roof or the like, which is characterized by joining to a waterproof sheet via a waterproof sheet.

Here, the waterproof sheet is made of a sheet made of a soft polyvinyl chloride, which is, for example, a long sheet having a width of about 1 to 2 m. 2.5 mm.

[0009] The side edges of adjacent waterproof sheets are connected, for example, by overlapping the side edge of one waterproof sheet with the side edge of the other waterproof sheet, and the upper waterproof sheet in the overlapping state. And the portion near the side edge of the lower waterproof sheet may be joined.

[0010] On the other hand, the floor material is made of a sheet in which a reinforcing material such as a woven fabric or a non-woven fabric of a synthetic resin fiber such as polyester or polyethylene or a glass fiber is embedded in a main material of polyvinyl chloride. This is a long one having a width of about 1 to 2 m, for example, and its thickness is usually about 1.0 to 3.0 mm. It is desirable to decorate the surface of the flooring material with a concavo-convex pattern or printing, or to provide a slip due to the concavity and convexity.

Since the waterproof sheet and the flooring are both made of a polyvinyl chloride sheet, the adhesive used for joining them is tetrahydrofuran alone, a small amount of vinyl chloride resin in tetrahydrofuran, or a mixture of vinyl chloride and vinyl acetate. A tetrahydrofuran-based solution type adhesive in which a resin such as a copolymer of the above is dissolved is used.

[0012] For example, 20 to 40 mm
An adhesive flowing-in prevention tape is pasted on the inside of the portion except for the portion to be bonded having a width of. Such an adhesive inflow prevention tape is made of, for example, kraft paper coated with an adhesive on one side, and has a width of, for example, 5 to 50 mm, and has an adhesive property with respect to a solution adhesive. Use something that does not exist.

The use of such an adhesive inflow prevention tape is because the tetrahydrofuran-based solution-type adhesive is extremely low-viscosity and easily flows, so that the adhesive causes the adhesive to flow inward between the floor material and the waterproof sheet. This is to prevent the water from flowing deeply.

The width of the portion to be bonded at the peripheral portion of the floor material is, for example, 20 to 40 mm, and the width of the portion to be bonded is 20 mm.
If the value is less than the above, the adhesion of the floor material is insufficient, and the floor material cannot be reliably stretched on the waterproof sheet. Also, if the width of the bonded portion exceeds 40 mm, it becomes difficult to peel off the floor material,
It is not preferable because the replacement work is troublesome. When the width of the floor material peripheral portion to be bonded is within the above range, the appearance of the floor material after stretching is very clean, and the work of changing the floor material is easy.

The adhesive inflow preventing tape is usually bonded in advance to the lower surface of the flooring material. In some cases, a floor material is covered from above, and the side edge of the floor material is bonded to the waterproof sheet via a bonding layer made of a solvent-type adhesive on the upper surface of the waterproof sheet outside the tape.

[0016] The floor material is joined to the upper surface of the waterproof sheet through a joining layer made of a tetrahydrofuran-based solvent-type adhesive over the entire circumference and outside the adhesive inflow preventing tape. There, in the second invention, the non-bonding joint tape, connecting side edges of the flooring adjacent
It is arranged so as to be positioned astride the lower one so as to be positioned on one of the lower or both, of the.

Here, as the non-joining joint tape, the same material as the above-mentioned adhesive inflow prevention tape can be used. For example, a 5 to 50 mm width made of kraft paper coated with an adhesive on one side is used. Use a tape.

The joint tape may be attached in advance to either the lower surface of the floor material or the upper surface of the waterproof sheet.

The bonded body for bonding the waterproof sheet may be a hard or semi-hard synthetic resin plate, a metal plate, or a plate material such as a steel plate coated on one or both sides with a vinyl chloride resin to improve adhesiveness. Use In the middle part of the concrete wall of the flat roof, for example, a circular joint and a flat strip-shaped joint are used, and in the corner of the concrete wall, a strip-shaped joint having a substantially L-shaped cross section is used. I do.

As a fixing device for fixing the joined body to a waterproof wall such as a concrete wall of a flat roof, for example, an open leg nail, a curl plug, or the like is used.

[0021]

According to the above-mentioned method of stretching floor materials, the tetrahydrofuran-based solvent-type adhesive has low viscosity and is easy to apply, and moreover, only the periphery of the floor material is joined to the waterproof sheet. Therefore, the floor material can be stretched on the upper surface of the waterproof sheet with very good workability, and the working time can be greatly reduced.

Further, since the bonding layer made of the solvent type adhesive is formed by mutually melting the polyvinyl chloride resins constituting the waterproof sheet and the flooring material, it has good water resistance and heat resistance, Excellent adhesion can be maintained, and durability is excellent.

Further, since the adhered portion of the floor material is bonded to the upper surface of the waterproof sheet via the bonding layer made of the solvent type adhesive over the entire circumference of the floor material and outside of the adhesive inflow tape, The width of the joint at the periphery of the flooring material is constant, so that the appearance after the flooring material is stretched is very beautiful.

In particular, in the second invention, a non-joining joint tape and an adhesive inflow preventing tape are attached to the lower surface of the peripheral portion of the flooring material, with a portion to be adhered having a required width between the two. Therefore, a non-joining portion of the waterproof sheet having a fixed width corresponding to the width of the joint tape is formed at the connecting portion of the flooring material, and the waterproofing sheet can freely expand and contract at the non-joining portion. The non-joined portion of the waterproof sheet follows well, so that breakage of the waterproof sheet can be prevented.

When replacing the floor material, the floor material must be
Since the peripheral part or the part near the peripheral part is joined to the surface of the waterproof sheet with a constant width, the peeling is relatively easy, so that the old flooring can be easily removed, and the new flooring can be replaced. Can be performed very easily and quickly, and the finish can be neatly performed.

[0026]

Next, the method of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2 showing the first embodiment of the present invention, a waterproof sheet (3) made of a soft polyvinyl chloride is first placed on the surface of a concrete wall (2) to be waterproofed on a flat roof (1).
Is joined to the joined body (4) only at a required portion of the peripheral portion and the intermediate portion, and most of the remaining portion is stretched while being left.

On the upper surface of the waterproof sheet (3), a long floor material (5) mainly made of polyvinyl chloride having a width of 1 m and a thickness of 2.0 mm is cut to a required length and laid. At the peripheral portion of each flooring (5), for example, a portion to be bonded (5a) having a width of 30 mm is provided.
Then, a 20 mm wide adhesive inflow preventing tape (7) made of kraft paper coated with an adhesive on one side is adhered to the inside of this (see FIG. 1A).

Next, of the two flooring materials (5) laid continuously one after the other, one of the first flooring materials (5) is a portion to be bonded at a peripheral portion of the first flooring material (5).
Apply (5a) a tetrahydrofuran solvent-based adhesive,
After the bonded portion (5a) is bonded to the waterproof sheet (3) via the bonding layer (6) of the solvent type adhesive, the second floor material (5) with the other adhesive inflow tape (7) Is prepared (see FIG. 1B). Further, the second floor material (5) a bonded portion (5a) of a peripheral portion
Is coated with a tetrahydrofuran-based solvent-based adhesive, and the bonded portion (5a) is bonded to a waterproof sheet (3) via a bonding layer (6) of the solvent-based adhesive (see FIGS. 1C and 2). .

In the above case, since the tetrahydrofuran-based solvent-type adhesive is low in viscosity and easy to apply, the floor material (5) is very workable on the upper surface of the waterproof sheet (3). It can be stretched well, greatly shortening the work time, and the bonding layer with solvent type adhesive (6)
Has good water resistance and heat resistance, can maintain excellent adhesiveness for a long time, and has excellent durability.

The side edge of the floor material (5) is provided over the entire circumference of the floor material (5) and outside the adhesive inflow preventing tape (7).
a) is bonded to the upper surface of the waterproof sheet (3) via the bonding layer (6) made of the solvent-type adhesive, so that the floor material peripheral portion (5a)
The width of the joint is constant, and the appearance after the flooring (5) is stretched is very clean.

Also, since only the peripheral edge of the flooring material (5) is joined, the unevenness of the flooring material (5) is hardly conspicuous even at the step of the joint portion of the waterproofing sheets (3) and (3). Even if the air layer generated between the waterproof sheet (3) and the floor material (5) expands, the unevenness of the floor material (5) is hardly noticeable for the same reason.

The joint (4) is made of a steel plate coated on both sides with a vinyl chloride resin. At the corner of the concrete wall (2) of the flat roof (1), a strip having a substantially L-shaped cross section is formed. In the middle part of the concrete wall (2), a circular joint (4b) and a flat strip-like joint (not shown) were used. An open nail was used as a fixture (10) for fixing these joints (4) to the concrete wall (2).

As the adhesive for joining the waterproof sheet (3) to the joined body (4), a tetrahydrofuran-based solvent-type adhesive may be used as in the case of the floor material (5) and the waterproof sheet (3). This is preferable because a bonding layer having excellent durability can be obtained.

In the overlapping portion between the flooring material (5) and the adjacent waterproof sheets (3) and (3), the sealing material (9) is used to prevent both ends of the gap formed between them. Fill.

As such a sealing material (9), for example, a material having a high viscosity in which the constituent material of the waterproof sheet (3) is dissolved in tetrahydrofuran as it is, and preferably 250 parts
It is preferable to use one adjusted to a viscosity of 0 to 3500 cps.

When replacing the floor material (5),
Since only the periphery (5a) of (5) is bonded to the surface of the waterproofing sheet (3), the peeling is relatively easy and the old flooring
After removing (5), new flooring for tarpaulin (3)
By slightly displacing the position of the joint of (5), the same excellent adhesive effect as in the earlier case can be obtained, making it very easy and quick to replace the new flooring (5).
Moreover, the finish can be finely performed without any unevenness.

FIG. 3 shows a second embodiment of the present invention. Here, the difference from the first embodiment is that
Non-joining joint tape is attached to the lower surface of the side edge of one flooring (5).
(8) is attached.

That is, of the two floors (5) laid continuously one after the other, the lower surface of one of the first floors (5) is firstly provided with a lower surface of 30 mm in the same manner as in the first embodiment. A 20 mm-wide adhesive inflow prevention tape (7) made of kraft paper coated with an adhesive on one side is attached in advance to the inside of the bonded portion (5a) with the width left (5a) (see FIG. 3A).

Next, the bonded portion (5) of the peripheral portion of the first floor material (5)
a) a tetrahydrofuran-based solvent-based adhesive is applied, and the bonded portion (5a) is bonded to a waterproof sheet (3) via a bonding layer (6) formed of a solvent-based adhesive; On the lower surface of the side edge of the material (5), a 20 mm wide non-joining joint tape (8) made of kraft paper coated with an adhesive and a bonded portion (5b) having a width of, for example, 30 mm are opened. An adhesive inflow prevention tape (7) having the same width as described above is attached to the inside (see FIG. 3B).

Then, a tetrahydrofuran-based solvent-type adhesive is applied to the part to be bonded (5b) near the periphery of the second flooring (5), and the part to be bonded (5b) is bonded to the bonding layer with the solvent-type adhesive.
Join to the waterproof sheet (3) via (6) (see Fig. 3 (c)).

Due to the presence of the joint tape (8),
A non-joined portion (3a) having a fixed width is formed on the waterproof sheet (3) at the connecting portion of the floor material (5), and the expansion and contraction of the non-joined portion (3a) is not hindered by the floor material (5). For example, the waterproof sheet non-joined part (3a) well follows the expansion and contraction of the adjacent floor materials (5) (5), and it is possible to effectively prevent the waterproof sheet (3) from breaking. There are advantages.

FIG. 4 shows a third embodiment of the present invention. Here, the difference from the case of the second embodiment is that
Connect the non-joining joint tape (8) to two adjacent floor
(5) is arranged so as to pass over the side edge.

That is, of the two floor materials (5) that are continuously laid side by side with each other, the lower surface of one of the first floor materials (5) has a 20 mm width made of kraft paper coated with an adhesive. The non-joining joint tape (8) is applied so as to protrude from the side edge of the flooring material (5) by about half, and a bonded portion (5c) having a width of, for example, 30 mm is opened inward from the floor material (5). An adhesive inflow prevention tape (7) having the following is attached (see FIG. 4A).

Then, a tetrahydrofuran-based solvent-type adhesive is applied to the part to be bonded (5c) near the periphery of the first flooring (5), and the part to be bonded (5c) is bonded to the bonding layer with the solvent-type adhesive.
It is joined to the waterproof sheet (3) via (6). Next, a large width is added to the periphery of the other second flooring material (5) by adding a width of about half of the joint tape (8) of 10 mm and a width of 30 mm of the part to be bonded (5c). Then, a 20 mm-wide adhesive inflow preventing tape (7) made of kraft paper coated with an adhesive on one side is attached thereto (see FIG. 4B).

Then, a tetrahydrofuran-based solvent-type adhesive is applied to the bonded portion (5c) near the periphery of the second floor material (5) along the adhesive flow preventing tape (7),
(5c) is bonded to the waterproof sheet (3) via the bonding layer (6) of the solvent type adhesive (see FIG. 4C).

FIG. 5 shows a fourth embodiment of the present invention. The fourth embodiment uses the joint tape (8) and the adhesive inflow prevention tape (7) in the same manner as the second embodiment, except that both tapes (7) are used. ) (8)
Is attached in advance to required locations on the upper surface of the waterproof sheet (3).

That is, an adhesive inflow prevention tape (7) is applied to a required portion of the upper surface of the waterproof sheet (3), and the first floor material (5)
(See FIG. 5A).

Next, the bonded portion (5a) on the periphery of the first flooring (5)
A tetrahydrofuran-based solvent-type adhesive is applied to the waterproof sheet, and the bonded portion (5a) is bonded to the waterproof sheet via the bonding layer (6) of the solvent-type adhesive and along the adhesive inflow prevention tape (7).
(3), adhesive tape (7) and joint tape (8) are provided on the upper surface of the waterproof sheet (3), with a 30 mm width bonded portion between them, and The second floor member (5) is attached so as to correspond to the bonded portion (5b) near the periphery of the second floor member (5) (see FIG. 5B).

Finally, a tetrahydrofuran-based solvent-type adhesive is applied to the bonded portion (5b) near the periphery of the second flooring (5), and the bonded portion (5b) is applied to both tapes (7) ( 8) and joined to the waterproof sheet part (see FIG. 5C).

In the drawings, the thicknesses of the adhesive inflow preventing tape (7) and the joint tape (8) and the thickness of the bonding layer (6) made of a tetrahydrofuran solvent-based adhesive are described for convenience of explanation. Although shown very enlarged, for example, both tapes (7) and (8) are made of kraft paper coated with an adhesive, and have a thickness of several μm. Further, in the bonding layer (6) made of the solvent-type adhesive, the waterproof sheet (3) and the floor material (5) are in direct contact with each other via the low-viscosity solvent-type adhesive, and the waterproof sheet (3) and the floor material (5) ) Are formed by melting the polyvinyl chloride resins constituting each other, and the thickness thereof is extremely thin.

The wall (2) of the flat roof (1) to be waterproofed in each of the above embodiments is usually made of concrete, but may be made of a precast concrete plate, a lightweight cellular concrete plate, wood or the like. You may.

Further, in the above-described embodiment, the case where the method for stretching floor materials according to the present invention is applied to the flat roof (1) has been described.
Or on a waterproof sheet stretched floor on a veranda etc.
The same applies to the case where a floor material is stretched.

[0054]

According to the first aspect of the present invention, as described above, the waterproof sheet made of soft polyvinyl chloride is joined to the surface of the wall to be waterproof only at a required portion such as a peripheral portion. On a flat roof that is joined to the body and stretched while leaving most of the rest, on the upper surface of the waterproof sheet, a long floor material with the required width and made mainly of polyvinyl chloride When cutting, laying and laying, the adhesive to prevent adhesive inflow is applied to the inside of each floor, leaving an adhesive part of the required width at the periphery of each floor, and then adhere to the periphery of the floor. After applying a tetrahydrofuran-based solvent-based adhesive to the part, the bonded part is bonded to a waterproof sheet via a bonding layer made of a solvent-based adhesive. Work is easy,
Since only the peripheral edge of the flooring material is joined to the waterproof sheet, workability is good, the flooring material can be stretched very easily, and in the case of full adhesion using the conventional epoxy resin adhesive The working time can be greatly reduced as compared with.

Further, since the bonding layer made of the solvent-type adhesive is formed by melting the polyvinyl chloride resins constituting the waterproof sheet and the flooring material with each other, it has good water resistance and heat resistance, Excellent adhesion can be maintained, and durability is excellent.

Further, since the bonded portion of the floor material is bonded to the upper surface of the waterproof sheet via the bonding layer made of the solvent type adhesive on the entire circumference of the floor material and outside the adhesive inflow preventing tape, The width of the joint at the periphery of the flooring material is constant, so that the appearance after the flooring material is stretched is very beautiful. Also, since only the peripheral edge of the flooring material is joined, the unevenness of the flooring material is hardly noticeable even at the step portion of the joint portion of the waterproof sheets, and even if the air layer generated between the waterproof sheet and the floor material Even if is expanded, the unevenness of the flooring material is hardly noticeable for the same reason.

According to a second aspect of the present invention, when the floor material is stretched, a non-joining joint tape is attached to the lower surface of the peripheral portion of the floor material, and a bonded portion having a required width is formed. A tape for preventing adhesive inflow is attached to the inside, and a tetrahydrofuran-based solvent-based adhesive is applied to the portion to be bonded near the periphery of the flooring material, and the bonded portion is bonded to the bonding layer using the solvent-type adhesive. The joint is connected to the waterproof sheet through the joint, and the presence of the joint tape forms a waterproof sheet non-joined portion having a constant width corresponding to the width of the joint tape at the connecting portion of the flooring material. Is not hindered, and the non-joined portion of the waterproof sheet closely follows the expansion and contraction of the adjacent floor material, thereby preventing the waterproof sheet from breaking.

When replacing the floor material, the floor material must be
Since only the peripheral part or the part near the peripheral part is joined to the surface of the waterproof sheet, the separation is relatively easy, and after removing the old floor material, the position of the joint part of the new floor material with respect to the waterproof sheet is determined. Even with a slight shift, the same good adhesive effect as in the earlier case is obtained, so that the work of replacing new flooring is very easy and quick, and the finish is clean without any irregularities. This has the effect of being able to

According to the method of the present invention, in any of the above cases, the waterproof sheet stretched on the flat roof or the like can be sufficiently protected by the floor material, so that, for example, medium walking with leather shoes or high heels is possible. In addition, sports such as badminton can be sufficiently performed.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing a main part of a flat roof according to a first embodiment to which a method for stretching a floor material according to the present invention is applied.

FIG. 2 is an enlarged sectional perspective view of a main part of the roof.

FIG. 3 is an enlarged sectional view of a main part showing a flat roof according to a second embodiment to which the method for stretching floor materials according to the present invention is applied.

FIG. 4 is an enlarged sectional view of a main part showing a flat roof according to a third embodiment to which the method for stretching floor materials according to the present invention is applied.

FIG. 5 is an enlarged sectional view of a main part showing a flat roof according to a fourth embodiment to which the method for stretching floor materials according to the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flat roof 2 Concrete wall to be waterproofed 3 Soft polyvinyl chloride waterproof sheet 4 Joint 4a L-shaped joint 4b Circular joint 5 Polyvinyl chloride floor material 5a Adhered part 5b Adhered part 5c Adhered part 6 Solvent Bonding layer with mold adhesive 7 Adhesive inflow prevention tape 8 Non-joining joint tape 9 Sealing material 10 Fixture

Claims (2)

(57) [Claims] 1. A waterproof sheet (3) made of soft polyvinyl chloride is joined to the surface of a wall (2) to be waterproofed, and only a required portion such as a peripheral portion is joined to the joined body (4), and most of the remaining portion is left as it is. On a roof (1), etc., which is stretched and stretched, on the upper surface of the waterproofing sheet (3), a long floor material with the required width and made mainly of polyvinyl chloride
When cutting (5) to the required length, laying it and laying it up side by side, the adhesive part (5a) of the required width is left on the periphery of each flooring (5), and adhesive flowing-in prevention tape is (7) is adhered, and then a tetrahydrofuran-based solvent-type adhesive is applied to the bonded portion (5a) of the floor material (5), and then the bonded portion is
A method of stretching a floor material on a waterproof sheet stretched roof or the like, characterized in that (5a) is joined to a waterproof sheet (3) via a joining layer (6) of a solvent type adhesive. 2. A soft polyvinyl chloride waterproof sheet (3) is joined to the surface of a wall (2) to be waterproof, and only a required portion such as a peripheral portion is joined to the joined body (4), and most of the remaining portion is left. On a roof (1), etc., which is stretched and stretched, on the upper surface of the waterproofing sheet (3), a long floor material with the required width and made mainly of polyvinyl chloride
When cutting (5) to the required length, laying it, laying it side by side, non-joining joint tape (8) is attached to the underside of the floor material (5).
And the part to be bonded with the required width (5b)
(5c) is opened and adhesive tape (7) is adhered to the inside of the floor material (5).
Apply (5c) a tetrahydrofuran solvent-based adhesive,
The above-mentioned bonded portions (5b) and (5c) are bonded to a waterproof sheet (3) via a bonding layer (6) made of a solvent-type adhesive, and a floor material is stretched on a waterproof roof stretched roof or the like. Method.