JP3488308B2 - Prefabricated waterproofing material for rising part and prefabricated waterproofing method for rising part using it - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a prefabricated waterproof sheet for a rising portion and a prefabricated waterproofing method for a rising portion using the same.

[0002]

2. Description of the Related Art The waterproofing method is (1) a asphalt waterproofing thermal method in which solid asphalt is melted in a pot at a construction site, and a plurality of asphalt roofing layers are laminated with the adhesive to form a waterproof layer, (2) Asphalt waterproof cooling method to form a waterproof layer by laminating multiple asphalt roofing with self-adhesive layer (self-adhesive layer), (3) Synthetic polymer sheet such as vulcanized rubber and vinyl chloride There are a sheet waterproofing method in which an adhesive agent is applied to both the ground surface to form a waterproof layer with only one sheet, and (4) a urethane coating film waterproofing method in which urethane coating material is applied and finished. In the waterproofing work, since there are almost no factors that hinder the behavior of the worker with respect to the flat surface portion, it is possible to carry out the work efficiently in each of the above-mentioned waterproofing methods, and moreover, a high working accuracy can be obtained.
Satisfactory waterproofing work is achieved both from the waterproof side and from the finished side.

However, since the rising part is constructed from the flat part to the vertical part, it is very difficult to work, and its working efficiency is reduced to 1/3 to 1/5 of the working efficiency of the flat part.

In the case of the asphalt waterproof thermal method, it is necessary to apply a plurality of asphalt roofing sheets to a vertical surface while flowing a high temperature asphalt. It is often contaminated with water and has problems in terms of finish.

Since the asphalt roofing with a self-adhesive layer and the synthetic polymer roofing are also relatively flexible, the shape retention cannot be said to be sufficient, and a relatively high-level construction technique is required when applying the portion.

Due to such poor workability due to the rising surface, waterproofing of the rising portion cannot always obtain sufficient construction accuracy, and an incomplete waterproof portion is apt to occur.
Above all, since the seat waterproofing is a single layer waterproofing, water leakage accidents frequently occur at the rising part.

[0007] Regarding waterproofing of the coating film, it requires a considerable amount of skill to repeat the work of applying it to the vertical surface twice, and since the coating film has a self-leveling property in the flat portion, a waterproof layer having a smooth and uniform thickness can be obtained. However, it is difficult to obtain a smooth waterproof layer having a uniform thickness on a vertical surface unless the brush application technique is excellent.

In the case of a roofing with a self-adhesive layer or a synthetic polymer sheet, if the groundwork is finished accurately, the sheet cut according to the rising height can be attached horizontally for a long time to improve the construction efficiency. It also reduces the waterproof reliability. However, in reality, the base is considerably uneven, and wrinkles occur in the middle of the sheet due to the unsuitability of the sheet at the corners, etc. Therefore, it can be applied only at a length of about 2 m at most.

[0009] One of the major problems peculiar to the rising part of various waterproofing methods other than the waterproofing of coating film is that it is difficult to process the connecting part (corner part) between the horizontal surface and the vertical surface. Since the portion is a right angle, the waterproof sheet is hard to fit in, and a gap is likely to be formed between the corner portion and the waterproof layer.

The corner portion is apt to receive an external force due to its structure, and a water leakage accident due to breakage of the waterproof layer is frequently generated. In order to improve the adhesion of the waterproof layer to the corners, chamfering is generally performed, and an extra strong sheet is applied for the purpose of reinforcing the waterproof layer in the portion.

The chamfering work is performed by directly making a surface with concrete at the stage of concrete foundation preparation, or by a wood / plastic foam or the like whose cross section is a right angled isosceles triangle or trapezoid with respect to the already completed corner. The chamfer member (also referred to as a cant strip) may be fixed using an appropriate adhesive material.

In the latter case, it is necessary to remove the protrusions of the base so as not to cause a step at their connecting portions when the cant strip is attached, which requires a great deal of labor.

Even if only the corner portion is taken, the above measures need to be taken, at least two works are increased, and the construction around the rising portion is difficult to construct, and the construction conditions are further deteriorated due to such a situation. There is.

As described above, there are many problems peculiar to the vicinity of the rising portion, which causes a significant decrease in work efficiency, requires a high degree of skill of the worker, and in addition, the worker's physical labor is intense.

Further, the decrease in the number of skilled workers is also a big problem, and in particular, there is a strong demand for simplification of the construction of the rising portion of the asphalt waterproof thermal method-prefabrication.

[0016]

SUMMARY OF THE INVENTION An object of the present invention is to provide a prefabricated waterproof sheet for a rising portion suitable for waterproofing a vertical surface and a prefabricated waterproofing method for a rising portion using the same.

[0017]

The first aspect of the present invention is (1) an asphalt layer, then a plastic film layer on the upper surface of a base material for asphalt roofing, an asphalt layer on the lower surface of the base material, and then a self-adhesive layer. (Hereinafter referred to as a self-adhesive layer) provided with a first waterproof layer, (2) on the plastic film layer of the first waterproof layer, a mineral
Asphalt roux having a weather resistant layer consisting of a grain layer on the surface
Fing (usually with exposed asphalt roofing for waterproofing
The second waterproof layer made of called being), (3) first waterproof layer of self-adhesive layer chamfered members are bonded across, (4) Self said first waterproof layer chamfer member is not present A prefabricated waterproof material for a rising part, comprising a peeling layer covering an adhesive layer, wherein both end portions orthogonal to the chamfering member are provided with an area (a) of only the first waterproof layer with a constant width, and An area (b) having a constant width and having only a first waterproof layer is provided at one end parallel to the chamfering member, and a second waterproof layer adjacent to the area has a constant width and has no mineral particle layer. (C) The prefabricated waterproof material for rising parts, characterized in that it is provided.

A second aspect of the present invention is to provide a region (a) of only the first waterproof layer with a constant width at both end portions orthogonal to the chamfered member, and to a constant width portion of the second waterproof layer adjacent to the region (a). Is provided with a region (d) made of a plastic film layer instead of the mineral grain layer, and one end portion parallel to the chamfering member is provided with a region (b) of only the first waterproof layer having a constant width and in that region. The prefabricated waterproof material for rising portions according to claim 1, wherein a region (c) having a constant width and having no mineral particle layer is provided in the adjacent second waterproof layer.

In a third aspect of the present invention, the chamfered member of the prefabricated waterproof material for rising portions according to claim 1 is aligned with the rising portion and the corner portion of the floor surface, and the first prefabricated waterproof material for rising portions is provided. And a second step of peeling off the release layer prefabricated waterproof material for the rising portion and adhering it to the rising portion and the floor surface by the function of the self-adhesive layer, and the first and second prefabricated waterproof materials for the rising portion. Characterized by including a step of adhering a joint asphalt roofing to a part of the first waterproof layer and the second waterproof layer adjacent to the first waterproof layer orthogonal to the abutting portion of the material and the two chamfered members that are in contact with each other. And a prefabricated waterproof construction method for the rising part.

A fourth aspect of the present invention is that one of the end portions of the waterproof material that is in a right angle relationship with the chamfering member is provided with a portion (a) in which the second waterproof layer does not exist parallel to the end surface. Cage,
A region (d) consisting of a plastic film layer instead of the mineral grain layer in the constant width portion of the second waterproof layer adjacent to it
And one of the end portions of the waterproof material in a parallel relationship with the chamfering member has a fixed portion in the vicinity of the end portion (b) where the second waterproof layer does not exist and the end portion of the second waterproof layer parallel to the end surface. A portion (c) having no mineral grain layer is provided in the range, and the chamfering member is on the side opposite to the portion (a) and has substantially the same width as the portion (a). The prefabricated waterproof material for rising portions according to claim 1, wherein the portion to be formed is notched.

In a fifth aspect of the present invention, after the chamfered member of the prefabricated waterproof material for rising portions according to claim 4 is fitted to the corner portion between the rising portions and the floor surface, the peeling layer is peeled off and the rising portions and floor surface are removed. Adhere the first prefabricated waterproof material for the rising part, and then attach the second prefabricated waterproof material for the rising part to the chamfering member and the second rising part of the prefabricated waterproof material for the first rising part. After aligning the chamfering member of the prefabricated waterproof material with the corner portion, peel off the release layer and remove the peeling layer from the second edge of the prefabricated waterproof material for the first rising part, the rising part and the floor surface. A prefabricated waterproof construction method for a rising portion, which comprises bonding a prefabricated waterproof material for the rising portion.

The laminated structure of the first waterproof layer is as described above, but as the first waterproof layer of the present invention, Japanese Patent Application No. 3-23021.
The tarpaulin of No. can be used as it is. The waterproof sheet of Japanese Patent Application No. 3-23021 has a non-slip thin layer (anti-slip layer) further provided on a plastic film. In the present invention, this non-slip thin layer is not always necessary. Since there is no inconvenience even if it is not present, the waterproof sheet can be diverted.

The second waterproof layer may be any asphalt roofing having a weather resistant layer represented by a mineral grain layer on its surface. The second waterproof layer may be laminated on the first waterproof layer by using molten asphalt, or a self-adhesive layer may be formed below the second waterproof layer and the self-adhesive layer may be used to make the first waterproof layer. It can also be laminated in layers.

Examples of the metal foil layer include aluminum foil and copper foil, and examples of the weather resistant synthetic resin include polyolefins, polyesters, polyamides, acrylic resins and the like.

Further, in the area (a) of only the first waterproof layer orthogonal to the two chamfering members in contact with each other in the first and second waterproof materials, and in a part of the second waterproof layer adjacent thereto. Asphalt roofing for joints to be glued,
The same or thicker one as the second waterproof layer can be used. The surface of the asphalt roofing for joints is often preferable when the same material as the surface of the asphalt roofing selected in the second waterproof layer is used because the finish is the same as the second waterproof layer of the prefabricated waterproof material for the rising portion. .

As the plastic film used for the first waterproof layer, the second waterproof layer of the prefabricated waterproof material and a part of the asphalt roofing for joints, general-purpose plastic films such as polyolefin series, acrylic resin series and polyester can be used. A polyolefin-based stretched or unstretched film is desirable in consideration of cost. Further, the thickness is preferably about 8 to 30 μm because it is required to have appropriate mechanical characteristics so that it is not easily damaged during the construction.

Further, as a plastic film containing a large amount of a plasticizer or a softening agent such as soft polyvinyl chloride, they may bleed later and the adhesiveness to the asphalt composition on the back surface of the plastic film may be extremely lowered. It is better to avoid it, because it exists.

It is preferable that a coating film having a high affinity for both the plastic film and the asphalt is applied on the surface of the plastic film. Such coating film forming materials include urethane-based, acrylic urethane-based,
Acrylic, polyamide, polyester paints and the like can be used. In short, this coating layer has a property that when a force is applied to forcibly separate the plastic film layer and the asphalt layer, the adhesive force is exerted so that the plastic film layer or the asphalt layer is destroyed. If it has such adhesive strength, if the two are forcibly peeled off, the asphalt layer usually causes cohesive failure.
This makes it possible to determine whether or not the required adhesive force is exerted. The thickness is preferably about 5 to 30 μm. The following can be mentioned as an example of the coating film forming coating material. NB 300 RS-2 (Dainichi Seika, trade name) 100 parts by weight Lasic B Hardener (Dainichi Seika, trade name) 5 parts by weight Lasic F (solvent) (Dainichi Seika, trade name) 50 parts by weight

As the above-mentioned base material, any base material used in ordinary asphalt roofing can be used. In general, the base material layer can use any base material such as cloth, non-woven fabric, and film, and examples thereof include woven and non-woven fabrics made of natural fibers and synthetic fibers, and plastic films.

As the self-adhesive layer, any material can be used as long as it has an affinity for the asphalt layer as well as an affinity for concrete and mortar, and a self-adhesive layer for it, but rubber-modified asphalt is particularly preferable. preferable. Further, a tackifier or an oil component may be added to the self-adhesive layer, if necessary.

Preferred composition examples for the self-adhesive layer are shown below. The self-adhesive layer was comparable in terms of adhesive strength and durability to the adhesive by the hot asphalt method. SBS * 1 10 to 20 parts by weight eg 15 parts by weight Asphalt 60 to 70 parts by weight eg 65 parts by weight Tackifier * 2 5 to 15 parts by weight eg 10 parts by weight Process oil 5 to 15 parts by weight eg 10 parts by weight * 1; SBS is a styrene / butadiene block copolymer. * 2: The tackifier is a polymer or copolymer of a C ₅ and / or C ₉ unsaturated fraction.

For the asphalt layer, asphalt or various modified asphalt can be used.

The release layer is normally made of release paper, but any material that does not have an affinity for the self-adhesive layer can be used.

As shown in FIG. 6, the chamfering member 1 is used in conformity with the corner portion between the rising portion 13 and the floor surface 14, and is generally a cant strip in the form of a columnar member having a right-angled isosceles triangle or a trapezoid. Sometimes called. Examples of the material include plastics, foamed plastics, wood, and the like, but from the viewpoint of weight reduction as a whole, foamed plastics is preferable, and rigid polyurethane foam is most convenient from the viewpoint of production.

The joint portion, that is, the joint portion, between the first rising portion prefabricated waterproof material and the second rising portion prefabricated waterproof material has both a butting method and an overlapping method.

The prefabricated waterproof material for the rising portion of the present invention is a laminate of two waterproof layers, a first waterproof layer and a second waterproof layer. For complete waterproofing, at least 2 like this
It is required to form a waterproof layer of layers. Therefore, the joint portion also needs to form at least two waterproof layers.

In the case of the butt method,

[Table 1] There are 7 ways.

In the above-mentioned seven means for adhering the prefabricated waterproof material for rising, no. In order to adopt the means of No. 1, it is necessary to use the prefabricated waterproof material for rising parts described in claim 2 .

The No. 2 and No. In order to adopt the means of No. 3, it is necessary to use the prefabricated waterproof material for rising parts described in claim 1 .

When it is unfavorable to use a release paper which is a waste material generated on-site, instead of the release layer provided on the back surface of the first waterproof layer, a plastic film layer (a coating for improving affinity if necessary) is used. The provision of a membrane layer is the same as in the case described above), and an alternative method is adopted in which a mineral powder layer or a plastic bead layer is used and this surface is rubbed with a torch burner to elute and bond the asphalt on the lower surface of the layer. You can also

As the mineral powder, silica, silica sand, mica, clay, alumina and the like are used. As the plastic beads, any plastic beads such as polystyrene can be used. Generally, the particle size of these mineral powders is preferably about 0.1 to 10 μm. In the case of plastic beads, those having a spherical diameter of 5 to 30 μ are preferable.

The type of claim 1 or 2 has a structure suitable for the butting method, and the type of claim 4 has a structure suitable for the overlapping method.

The basis of the construction method by the butt method is the method of claim 3 , and the details thereof are described in the embodiments 5, 6, 7,
8 shows. Further, the superposition method is as described in claim 5 .

The joint part does not necessarily have to have two waterproof layers, but considering the safety of construction and considering that the waterproof layer of the prefabricated waterproof material is also two layers, the joint part is also formed. The waterproof layer is usually two layers. The specific mode corresponds to the embodiments 5, 6, 7 and 8.

In the butt joint method, when the waterproofing of the joint portion is made into two layers, the method of adhering the first waterproof layer for the joint is the method of adhering with the molten asphalt (the thermotechnical method of applying the hot asphalt method) and the joint. There are two methods of providing a self-adhesive layer on the first waterproof layer and adhering the self-adhesive layer, and the method of adhering the second waterproof layer for joint is also a method of adhering with molten asphalt ( The fact that there is a bonding method using a thermal method) and a self-adhesive layer is the same as the above-mentioned bonding method 1-No. As shown in FIG. An example of the laminated structure of the second waterproof layer for joint having the self-adhesive layer is shown in FIG.

The second waterproof layer for joint needs to be firmly adhered to the second waterproof layer of the prefabricated waterproof material for the rising portion. When bonding the second waterproof layer for joints by molten asphalt (thermal method), the cross-section of the abutting part is as shown in FIG. 12, and on the weather resistant layer such as the mineral particle layer of the prefabricated waterproof material for the rising part. Molten asphalt 1
Since the second waterproof layer for joint is adhered via 8, the existence of the particles of the mineral particle layer and the powder layer does not pose any problem, unlike the case of adhering by the self-adhesion layer.

However, when the second waterproof layer for joint is adhered not by the molten asphalt but by the self-adhesive layer of the second waterproof layer for joint itself, the mineral particle layer of the prefabricated waterproof material for rising does not completely adhere. Hinder. Therefore, by using the plastic film layer 19 instead of the mineral grain layer only in the portion where the second waterproof layer for joints overlaps, perfect adhesion can be achieved. The cross section of the joint portion in this case is shown in FIG. When the weather resistant layer is a plastic layer having a high affinity with the metal foil layer or the self-adhesive layer, it is not necessary to change this portion to the plastic film layer 19.

An example of the first waterproof layer in the prefabricated waterproof material for the rising portion of the present invention is shown in FIG. In this example, the first waterproof layer has the self-adhesive layer 5 and the peeling layer 6. When using molten asphalt to bond without using the self-adhesive layer (thermal method),
The self-adhesion layer 5 and the peeling layer 6 are not provided, and a mineral powder is provided instead.

FIG. 5 shows an example of the second waterproof layer in the prefabricated waterproof material for the rising portion of the present invention. Asphalt layer 3 and mineral grain layer 7 on the upper surface of base material 4, and asphalt layer 3 and mineral grain layer 7 on the lower surface of base material 4 (preferably smaller particles) 7
Is provided.

The embodiments of the present invention will be listed below. 1. (1) A first waterproof layer provided with an asphalt layer, then a plastic film layer on the upper surface of an asphalt roofing substrate, an asphalt layer on the lower surface of the substrate, and then a self-adhesive layer (hereinafter referred to as a self-adhesive layer), ( 2) A second waterproof layer made of asphalt roofing having a weather resistant layer selected from the group consisting of a mineral grain layer, a metal foil layer and a weather resistant synthetic resin film layer on the plastic film layer of the first waterproof layer, (3) A chamfering member that is bonded across the self-adhesive layer of the first waterproof layer, and (4) a peeling layer that covers the self-adhesive layer of the first waterproof layer where the chamfering member does not exist. Prefabricated waterproof material for rising parts. 2. Both end portions orthogonal to the chamfering member have a constant width and a region (a) having only the first waterproof layer is provided, and one end portion parallel to the chamfering member has a constant width and a region having only the first waterproof layer (a). The prefabricated waterproof material for rising portions according to the above item 1, wherein the second waterproof layer adjacent to the area b) is provided with an area (c) having a constant width and having no mineral particle layer. 3. A region (a) of only the first waterproof layer is provided with a constant width at both ends orthogonal to the chamfering member, and a plastic film layer instead of the mineral grain layer is provided in the constant width part of the second waterproof layer adjacent to the region (a). Area (d) is formed, and one end portion parallel to the chamfering member is provided with an area (b) of only the first waterproof layer having a constant width, and the second waterproof layer adjacent to the area has a constant area. The prefabricated waterproof material for rising portions according to item 1, wherein the region (c) having a width and having no mineral grain layer is provided. 4. The chamfering member of the prefabricated waterproof material for rising portions according to the above 2 or 3 is fitted to the corner portions of the rising portion and the floor surface to provide a first prefabricated waterproof material for rising portions and a second prefabricated waterproof material for rising portions. Peeling off each release layer and adhering it to the rising part and the floor surface by the function of the self-adhesive layer, the abutting part of the first and second prefabricated waterproof materials for the rising part and the contact between both "Area of only the first waterproof layer orthogonal to the chamfer member" (a), (a)
And a prefabricated waterproof construction method for the rising portion, which comprises a step of adhering asphalt roofing for joint to a partial area of the second waterproof layer adjacent thereto. 5. Adhesion of the joint asphalt roofing is (a) the asphalt layer on the upper surface of the asphalt roofing substrate, then a plastic film layer, and the first waterproof layer for the joint, which is provided with the asphalt layer on the lower surface of the substrate, melts asphalt. Adhesion by using, then (b) on the first waterproof layer for joints, consisting of asphalt roofing having a weather resistant layer on the surface, and melting the second waterproof layer for joints whose width is larger than the first waterproof layer for joints The prefabricated waterproofing construction method for the rising portion according to the above item 4, wherein the asphalt is used for adhesion. 6. (A) For the joint in which the asphalt roofing for joint is adhered (a) an asphalt layer is provided on the upper surface of the asphalt roofing substrate, then a plastic film layer is provided, and an asphalt layer is provided on the lower surface of the substrate, and then a self-adhesion layer and a release layer are provided. The peeling layer is peeled off from the first waterproof layer, and the self-adhesive layer is adhered to the second waterproof layer for joints. The second waterproof layer for joints is formed by asphalt roofing having a weatherproof layer on the surface of the first waterproof layer for joints. The prefabricated waterproofing construction method for the rising portion according to the preceding item 4, wherein the above is adhered using molten asphalt. 7. The chamfering member of the prefabricated waterproof material for rising parts according to the preceding paragraph 3 is fitted to the corners of the rising part and the floor to provide a first prefabricated waterproof material for rising parts and a second prefabricated waterproof material for rising parts. The step of peeling off each peeling layer and adhering it to the rising part and the floor surface by the function of the self-adhesive layer, and the abutting part of the first and second rising part prefabricated waterproofing materials and the two contacting parts Asphalt for joints in the above-mentioned two areas (a) and (a) which are orthogonal to the chamfering member and are a partial area of the second waterproof layer adjacent to the areas (a) and (a). In the prefabricated waterproofing construction method of the rising part including the step of adhering the roofing, the adhesion of the asphalt roofing for joint is (a) the asphalt layer on the upper surface of the base material for the asphalt roofing, and then the The plastic film layer is adhered to the first waterproof layer for joints, which is provided with an asphalt layer on the lower surface of the base material, using molten asphalt, and then (b) a weatherproof layer is formed on the first waterproof layer for joints. A second joint waterproof layer, which is formed on the front surface and has a self-adhesive layer and a peeling layer on the back surface, and whose lateral width is larger than that of the first waterproof layer for the joint, is peeled off from the self-adhesive layer. A prefabricated waterproof construction method for the rising part, which is characterized in that it is adhered by an adhesive layer. 8. The chamfering member of the prefabricated waterproof material for rising parts according to the preceding paragraph 3 is fitted to the corners of the rising part and the floor to provide a first prefabricated waterproof material for rising parts and a second prefabricated waterproof material for rising parts. , A step of peeling off each peeling layer and adhering it to the rising part and the floor surface by the function of the self-adhesive layer,
The first and second rising portions of the prefabricated waterproof material for the rising portion and the two “areas of only the first waterproof layer orthogonal to the chamfering member” (a), (a) that are in contact with each other, and In the prefabricated waterproofing construction method of the rising portion including the step of adhering the asphalt roofing for joint to (d) and (d) which are a part of the second waterproof layer adjacent to it, the adhesion of the asphalt roofing for joint is (A) An asphalt layer on the upper surface of the asphalt roofing base material, then a plastic film layer, an asphalt layer on the lower surface of the base material, and then a first waterproof layer for joint comprising a self-adhesive layer and a release layer, and a release layer. Peeled off and adhered by its self-adhesive layer, and (b) further has a weather resistant layer on the surface of the first waterproof layer for joint,
A second waterproof layer for a joint, which is made of asphalt roofing having a back surface, a self-adhesive layer and a peeling layer, and whose width is larger than the first waterproof layer for the joint, is peeled off from the peeling layer and bonded by the self-adhesive layer. Prefabricated waterproof construction method of rising part characterized by.

[0051]

The present invention will be described in detail below with reference to examples, but the present invention is not limited thereto.

Example 1 (corresponding to claim 1 and claim 3 ) Example 1 is 1 of the prefabricated waterproof material for the rising portion of the present invention.
FIG. 1 is a plan view thereof and FIG.
Is a sectional view thereof, and FIG. 12 is a sectional view of the joint portion,
The construction mode is shown in FIGS. The actual dimensions of the prefabricated waterproof material for the rising portion used in the examples are shown in FIGS.
It is shown in m units. Regions in the claims 1 (a), area (b), area (c) is shown in Figure 1. Figure 1
The first waterproof layer 8 in the prefabricated waterproof material for rising portions in FIG. 2 has the laminated structure shown in FIG.
The second waterproof layer 9 in the prefabricated waterproof material for the rising portion,
The thing of the laminated structure shown in FIG. 5 was used. The first waterproof layer and the second waterproof layer were adhered by the hot asphalt method.

Prefabricated waterproof material 11, 12 for the rising portion having the above-mentioned laminated structure. ． ． The chamfered member 1 while aligning the chamfered members 1 with the corner portions of the rising portion 13 and the floor surface 14, and prefabricated waterproof materials 11, 12. ． ． A prefabricated waterproof material for the rising portion is formed on the rising portion 13 and the floor surface 14 by using the adhesive force of the self-adhesive layer 5 while peeling off the peeling layer (release paper) 6 on the back side of the rising portion 13 (see FIG. 6). 11,12. ． ．
Glue.

At the abutting portion of the prefabricated waterproof member 11 for the rising portion and the prefabricated waterproof member 12 for the rising portion, the release paper 6 of the first waterproof layer 15 for joint having the laminated structure of FIG. The adhesive force of the layer 5 is used to adhere to the regions (a) and (a) of the abutting portion. (See Figure 7)

After applying the first waterproof layer 15 for the joint,
A second waterproof layer 16 for joint, which is wider than the first waterproof layer for joint, was adhered by the hot asphalt method (see FIGS. 8 and 9). 18 indicates the presence of molten asphalt.

Since the waterproofing work on the rising portion is completed by the above-mentioned construction, the asphalt roofing is thereafter constructed on the floor surface by the usual construction method.

Example 2 (corresponding to claim 2 and claim 3 ) Example 2 shows another specific example of the prefabricated waterproof material for the rising portion of the present invention, and Fig. 14 is a plan view thereof. Figure 1
3 is a cross-sectional view of the joint portion, and the construction mode thereof conforms to FIGS. 6 to 10 of the first embodiment. The area (a), the area (b), the area (c), and the area (d) in claim 2 are as shown in FIG.
It is as shown in 4. The first waterproof layer 8 in the prefabricated waterproof material for rising portions in FIGS. 14 and 13 has the laminated structure shown in FIG. 4, and the second waterproof layer 9 in the prefabricated waterproof material for rising portions is at its end. Except for the portion of the corresponding region (d), it has the laminated structure shown in FIG. The first waterproof layer and the second waterproof layer were adhered by the hot asphalt method.

Prefabricated waterproof material 11, 12 for the rising portion having the above-mentioned laminated structure. ． ． The chamfered member 1 while aligning the chamfered members 1 with the corner portions of the rising portion 13 and the floor surface 14, and prefabricated waterproof materials 11, 12. ． ． A prefabricated waterproof material for the rising portion is formed on the rising portion 13 and the floor surface 14 by using the adhesive force of the self-adhesive layer 5 while peeling off the peeling layer (release paper) 6 on the back side of the rising portion 13 (see FIG. 6). 11,12. ． ．
Glue.

At the abutting portion of the rising portion prefabricated waterproof material 11 and the rising portion prefabricated waterproof material 12, while peeling off the release paper 6 of the joint first waterproof layer 15 having the laminated structure of FIG. The adhesive force of the layer 5 is used to adhere to the regions (a) and (a) of the abutting portion.

After applying the first waterproof layer 15 for the joint,
A second waterproof layer 16 for joint, which is wider than the first waterproof layer for joint, was adhered. The second waterproof layer for the joint is a laminate comprising a weather-resistant layer (for example, a mineral grain layer), an asphalt layer (usually two layers), a self-adhesion layer 20, and a peeling layer in that order from the surface after peeling off the peeling layer. It is adhered to the plastic film layer 19 provided in the region (d) of the prefabricated waterproof material for rising portions by self-adhesive force.

Since the waterproofing work for the rising portion is completed by the above-mentioned construction, the asphalt roofing is thereafter constructed on the floor surface by the usual construction method.

[0062]

(Effects) (1) It is possible to form a waterproof layer (durability / mechanical performance) equivalent to that of a flat surface portion in one working process without requiring skill. (2) The molten asphalt may not be used at all, or may be limited to the minimum necessary in some cases. (3) The watertight reliability of the prefabricated waterproof sheet, which is the same as that of the flat portion, can be obtained by an easy and simple method. (4) The work efficiency can be greatly improved as compared with the conventional thermal method. Usually, the required time is 50% or less. (5) The material cost can be suppressed within 30% more than the conventional thermal method. (6) It can be easily installed even if not a skilled worker. (7) The construction can be performed without forming voids in the corners, and therefore, the reinforcing waterproof sheet is not required.

[Brief description of drawings]

FIG. 1 is a plan view of a prefabricated waterproof material for rising portions of Example 1. FIG.

FIG. 2 is a cross-sectional view of a prefabricated waterproof material for rising portions of Example 1.

FIG. 3 is a plan view of a joint portion between prefabricated waterproof members for rising portions in the first embodiment.

FIG. 4 is a cross-sectional view showing a laminated structure of a first waterproof layer of the prefabricated waterproof material for rising portions used in Example 1.

FIG. 5 is a cross-sectional view showing a laminated structure of a second waterproof layer of the prefabricated waterproof material for rising portions used in Example 1.

FIG. 6 is a perspective view showing a process of applying the prefabricated waterproof material for the rising portion in Example 1, and showing a state in which the prefabricated waterproof material for the rising portion is butted.

FIG. 7 is a perspective view showing a process of applying the prefabricated waterproof material for rising portions in Example 1, and showing a mode in which the first waterproof layer for joint is applied to the butted joint portions.

FIG. 8 shows a process for constructing a prefabricated waterproof material for a rising portion in Example 1, in which a wider second joint waterproof layer is bonded onto the first joint waterproof layer by a hot asphalt method. It is a perspective view showing a mode.

9 is a perspective view showing a state where the construction of FIG. 8 is completed.

FIG. 10 is a perspective view showing a mode in which waterproofing work is performed on the floor surface after waterproofing work on the rising portion is completed.

FIG. 11 is a cross-sectional view showing an example of a laminated structure of a type having a self-adhesive layer in the second waterproof layer for joints.

FIG. 12 is a cross-sectional view showing an example of a joint portion when a hot asphalt method is used to bond the second waterproof layer for joints when bonding the waterproof layer for joints.

FIG. 13 is a cross-sectional view showing an example of a joint portion when a self-adhesive layer is used for adhering a second waterproof layer for a joint in adhering the waterproof layer for a joint.

FIG. 14 is a plan view of a prefabricated waterproof material for rising portions of Example 2.

[Explanation of symbols]

1 Chamfering member 2 Plastic film layer 3 Asphalt layer 4 Base material layer 5 Self-adhesion layer 6 Release layer 7 Mineral grain layer 8 First waterproof layer 9 Second waterproof layer 11 First prefabricated waterproof material for rising part 12 Second Th prefabricated waterproof material for rising portion 13 rising portion 14 floor surface 15 first waterproof layer for joint 16 second waterproof layer for joint 16 'second waterproof layer for joint 17 self-adhesive layer of molten asphalt or first waterproof layer for joint 18 Molten asphalt 19 Plastic film layer instead of mineral grain layer of prefabricated waterproof material for rising part 20 Self-adhesive layer in second waterproof layer for joint 21 Asphalt roofing

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Kojima 1-3-1, Kodai, Adachi-ku, Tokyo Tajima Roofing Co., Ltd. (56) Reference JP 4-350245 (JP, A) JP JP 6-307032 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04D 5/00 E04D 5/14 E04D 7/00 E04D 11/00 E04D 11/02

Claims (5)

(57) [Claims] (1) An asphalt layer is provided on the upper surface of an asphalt roofing substrate, and then a plastic film layer is provided on the lower surface of the substrate, and an asphalt layer is provided on the lower surface of the substrate, and then a self-adhesive layer (hereinafter referred to as a self-adhesive layer) is provided. One waterproof layer,
(2) Minerals on the plastic film layer of the first waterproof layer
Asphalt roux having a weather resistant layer consisting of a grain layer on the surface
A second waterproof layer consisting of a fing , (3) a chamfer member adhered across the self-adhesive layer of the first waterproof layer, and (4) a self-adhesive layer of the first waterproof layer in which the chamfer member does not exist. A prefabricated waterproof material for a rising portion, which comprises a peeling layer, and a region (a) of only the first waterproof layer having a constant width is provided at both ends orthogonal to the chamfering member. An area with a certain width only on the first waterproof layer at one parallel end (b)
The prefabricated waterproof material for rising parts, characterized in that the second waterproof layer adjacent to the area is provided with an area (c) having a constant width and having no mineral particle layer. 2. An area (a) of only the first waterproof layer is provided with a constant width at both ends orthogonal to the chamfering member, and a mineral grain layer is provided in a constant width portion of the second waterproof layer adjacent to the area (a). Instead, a region (d) made of a plastic film layer is provided, and one end portion parallel to the chamfering member is provided with a region (b) of only the first waterproof layer having a constant width and the second waterproof adjacent to the region. The prefabricated waterproof material for rising portions according to claim 1, wherein a region (c) having a constant width and having no mineral grain layer is provided in the layer. 3. The first prefabricated waterproof material for rising parts and the second prefabricated waterproof material for rising parts according to claim 1 or 2 in accordance with the chamfering member of the prefabricated waterproof material for rising parts according to the corners of the rising part and the floor surface. A step of peeling the prefabricated waterproof material for the rising portion and adhering it to the rising portion and the floor surface by the function of the self-adhesive layer, and a first and second butting portion of the prefabricated waterproof material for the rising portion. And a step of adhering a joint asphalt roofing to a partial region of the first waterproof layer orthogonal to the two chamfering members which are in contact with each other and the second waterproof layer adjacent thereto. Prefabricated waterproof construction method. 4. One of the ends of the waterproof material that is in a right angle relationship with the chamfering member is provided with a portion (a) where the second waterproof layer does not exist parallel to the end face, and adjacent to it. A region (d) made of a plastic film layer is provided in place of the mineral grain layer in the constant width portion of the second waterproof layer, and one of the end portions of the waterproof material in a parallel relationship with the chamfering member,
A portion (b) where the second waterproof layer does not exist and a portion (c) which does not have a mineral particle layer are provided in a certain range in the vicinity of the end of the second waterproof layer parallel to the end face, and the chamfering member is provided. The prefabricated waterproof material for rising portions according to claim 1, wherein a portion on the opposite side of the portion (a) and having a width substantially the same as the portion (a) is cut out. 5. After the chamfering member of the prefabricated waterproof material for rising parts according to claim 4 is fitted to the corner portion between the rising parts and the floor surface, the peeling layer is peeled off to make the first part on the rising parts and the floor surface. Adhere the prefabricated waterproof material for the rising portion, and then attach the second prefabricated waterproof material for the rising portion to the chamfered member of the first prefabricated waterproof material for the rising portion and the surface of the second prefabricated waterproof material for the rising portion. After aligning the take-up members with the corners, peel off the release layer and remove the second prefabricated waterproof for rising parts near the edge of the first prefabricated waterproof material for rising parts and on the rising part and floor. A prefabricated waterproof construction method for rising parts, which is characterized by bonding materials.