JPH10331273A - In-wall waterproof method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To costlessly and easily improve the waterproof capacity, by sticking and fixing a specified waterproof sheet to the front face side of an external wall arranged between a column and the external wall or close to the column so as to cover the whole surface of the column and the external wall except the opening such as a window or a door. SOLUTION: An internal wall 6, columns 2, an adhesive layer 4, a waterproof sheet 1, an external wall 3, and a painting film 5 are superposed one by one to form a wall structure. The waterproof sheet 1 is made of a rubber sheet with a base of EPDM/ butyl. In this time, the thickness of the rubber sheet is 0.5-1.2 mm and unvulcanized butyl rubber is used as the adhesive layer 4. The thickness of the adhesive layer 4 is made 0.3-2.0 mm. Or the waterproof sheet 1 is made of PP or the like and butyl rubber or acrylic adhesive is used for the adhesive layer 4. And further, the thickness of the waterproof sheet 1 is made about 0.1 mm and the thickness of the adhesive layer 4 is made 0.1-0.2 mm and the width is made 5-15 mm and a part of 1-3 mm without adhesive is formed between adjacent materials. In this way, when waterproof sheets 1 are attached to the columns 2 laterally, the overlapped length formed at the connection part is made 100 mm or longer to improve the ventilation in the wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for waterproofing a building including an inner wall, a pillar, an outer wall and the like.

[0002]

2. Description of the Related Art The outer surface of a conventional building has, for example, the structure shown in FIG. That is, the pillars 2 are disposed at appropriate intervals in contact with the inner wall 6, and the outer wall 3 is disposed thereon. The outer wall 3 is formed by joining a plurality of outer walls 3 at the pillars 2, and the joints with the pillars 2 are provided with sealing means 9 for preventing intrusion of water or dust. Although there are various types of sealing means 9, for example, caulking, sticking of a waterproof sheet, putty, a coating film, and the like have been exclusively employed. In addition, a special waterproof material 11 is used for a joint 10 between the walls,
The corner was sealed with a special accessory. In addition,
When the above-mentioned sealing process cannot be performed at the joint portion 10 or at the outgoing corner or the inward corner, the sealing process is performed by solid coating such as caulking or putty.

[0003]

As described above, since the outer wall 3 is attached to the pillar 2, the number of the joints 10 increases, and the sealing work of the joints 10 requires an extremely large number of processing steps. In addition, there is a problem that mistakes in construction are apt to occur, resulting in insufficient sealing. In addition, outer wall 3
When the sealing process is applied to the joint portion 10 on the surface, the portion protrudes and becomes stepped, the appearance is deteriorated, and there is a problem that much time is required for correcting the appearance.

[0004] When the strength of the joint portion of the joint 10 is low, the water cutoff line may be broken due to the effect of the earthquake or the behavior of the outer wall itself. For this reason, it is necessary to use an expensive material. In addition, the waterproof waterproof material is a special material, so that it is difficult to produce a line, and there is a problem that construction costs rise. on the other hand,
When the joint portion 10 is sealed by caulking or putty, the strength is low and there is no durability, so that there is a problem that maintenance cost increases. Further, there is a risk that the plasticizer oozing out of the caulk or putty may contaminate the outer wall 3 and self-ignite.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems. The present invention greatly improves waterproofness, has durability, is easy to construct, can be used for various types of buildings, and is relatively inexpensive. It is an object of the present invention to provide a waterproof method in a wall.

[0006]

In order to achieve the above object, a method for waterproofing an inside wall of a wall according to the present invention provides a column disposed in contact with an inner wall and an outer wall disposed over and covering the surface of the column. A method for waterproofing the inside of a wall of a building, comprising: an opening such as a window or a door of the pillar or the outer wall, between the pillar and the outer wall, or on the surface side of the outer wall provided in contact with the pillar. It is characterized in that a waterproof sheet is adhered and fixed over the entire surface except for the above. According to a second aspect of the present invention, the waterproof sheet is characterized in that a plurality of the waterproof sheets are arranged in close contact with each other in a vertical direction or a horizontal direction. The width of each of the plurality of waterproof sheets is substantially equal to the distance between the columns, and the joint surface of the adjacent waterproof sheets is on the surface of the columns. It is characterized by being arranged in. Further, the waterproofing method according to claim 4 is characterized in that an exterior material is applied to the surface of the outer wall or the surface of the waterproof sheet which is the outermost surface. Claim 5
The method for waterproofing in a wall described above is characterized in that the exterior material is a coating film. Further, in the method for waterproofing in a wall according to claim 6, when a joint portion of a plurality of waterproof sheets arranged along the lateral direction has no adhesive layer, it is joined in a superposed state, and the superposed length is 1
It is characterized by being not less than 00 [mm]. According to a seventh aspect of the present invention, in the case where the waterproof sheet is provided between the pillar and the outer wall, the waterproof sheet comprises a rubber sheet based on EPDM or EPDM / butyl. The adhesive layer of the waterproof sheet is made of unvulcanized butyl rubber. Further, in the method for waterproofing in a wall according to claim 8, the rubber sheet has a thickness of 0.5 to 1.2 [mm], and in this case, the thickness of the adhesive layer is 0.3 to 2.0 [mm]. There is a feature. According to a ninth aspect of the present invention, in the method for bonding the rubber sheet to the pillar, an adhesive layer is provided on the pillar side in advance, and the rubber sheet is attached later. Claim 10
The described in-wall waterproofing method is characterized in that a rubber sheet is formed from a rubberized cloth combined with a woven cloth for preventing expansion and contraction, and an adhesive layer is applied to the woven cloth in advance. Further, in the waterproofing method according to the eleventh aspect, in a case where a waterproof sheet is adhered to the surface of the outer wall and a coating film is formed on the surface of the waterproof sheet, the waterproof sheet is preferably a polymer sheet, and the material is PP. , CPP, PE, PET, EVA,
It is characterized in that butyl rubber or acrylic paste is used as the adhesive layer. Further, the waterproof method in the wall according to claim 12 is:
The polymer sheet has a thickness of about 0.1 [mm]. According to a thirteenth aspect of the present invention, the adhesive layer has a thickness of 0.1 to 0.2 [m].
m] and a width of 5 to 15 [mm], and an adhesive-free portion having a width of 1 to 3 [mm] is formed between adjacent adhesive layers.

[0007] Since a single waterproof sheet is adhered to the pillars and outer walls almost entirely except for openings such as windows and doors through an adhesive layer, complete waterproofing can be achieved and work can be performed easily, and work efficiency can be improved. Can be improved. In addition, since a joint at a narrow seam or the like is not sealed as in the related art, the strength is high and the durability is high. Further, the waterproof sheet does not use a special material and can be implemented at a relatively low cost. Moreover, it is applicable to various buildings.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a waterproofing method according to the present invention. FIG. 1 shows an embodiment in which a waterproof sheet is provided between a pillar and an outer wall. The wall structure of the present embodiment has a structure in which inner walls 6, pillars 2, adhesive layers 4, waterproof sheets 1, outer walls 3, and coating films 5 are sequentially stacked. The pillars 2 are in contact with the inner wall 6, and a plurality of pillars 2 are arranged at appropriate intervals. The waterproof sheet 1 of this embodiment is adhered and fixed on the pillar 2 via the adhesive layer 4 so as to cover almost the entire surface thereof. The outer wall 3 is disposed in contact with the surface of the waterproof sheet 1, and the surface of the outer wall 3 is painted to form a coating film 5.

In this embodiment, the waterproof sheet 1 is made of a rubber sheet based on EPDM / butyl and has a thickness of 0.5 to 1.2 [mm]. The reason why the thickness is set in the above range is obtained from empirical values in consideration of the waterproof effect and economic efficiency. Unvulcanized butyl rubber is used as the adhesive layer 4 for bonding the waterproof sheet 1 of this material to the pillar 2. The adhesive layer 4 is formed to have a thickness of 0.3 to 2.0 [mm] corresponding to the thickness of the waterproof sheet 1 so as to have an adhesive strength corresponding to the weight of the waterproof sheet 1.

FIG. 2 shows an embodiment in which a plurality of the waterproof sheets 1 shown in FIG. 1 are arranged along the longitudinal direction. It is desirable that a single sheet of the waterproof sheet 1 be disposed on the pillar 2, but the area of the wall surface of the building is large, and it is impossible to use a single sheet. Therefore, the waterproof sheet 1 having an appropriate width is
Adhesive method is adopted. In this case, the adjoining waterproof sheets 1 and 1 are arranged so that the joint portion 10 is on the surface of the pillar 2 by using the one corresponding to the interval width of the pillar 2. It is desirable that there is no gap between the joints 10 of the waterproof sheets 1 and 1. However, even if there is some gap, the adhesive layer 4 is interposed between the pillar 2 and a special sealing process is required. There is no.

FIG. 3 shows an embodiment in which a plurality of waterproof sheets 1 are arranged in a horizontal direction. In the case of the present embodiment, the same effect can be obtained as in the case of the arrangement in the vertical direction, except that the arrangement direction is different.

In the embodiment of the present invention shown in FIGS. 1 to 3, an adhesive layer 4 for adhering the waterproof sheet 1 to the pillar 2 is provided in advance on the pillar 2 side, and the waterproof sheet 1 is attached later. Easy to do in construction. However, in this method, the number of man-hours is slightly increased. Therefore, in order to reduce the number of man-hours, the waterproof sheet 1 is made of a rubberized cloth combined with a woven fabric for prevention of expansion and contraction, and an adhesive layer is applied thereto in advance to form the pillar 2. May be bonded and fixed. Note that this method is insufficient for the terminal treatment of the waterproof sheet 1, and in this case, bonding is performed with a separate adhesive layer.

FIG. 4 shows an embodiment having a wall structure in which an outer wall 3 abuts on a pillar 2 and a waterproof sheet 1 is adhered and fixed on the surface of the outer wall 3. Note that a coating film 5 is formed on the surface of the waterproof sheet 1 adhered to the outer wall 3. Also in this case, as shown in FIGS. 2 and 3, a plurality of waterproof sheets 1 are arranged in the vertical and horizontal directions.

In the case of the waterproof sheet shown in FIG. 4, it is desirable that the waterproof sheet has a zero-span strength, particularly a thin film, and that the bonding strength with the coating film 5 and the coating strength are about the same as those of the coating film 5. It is desirable to use a material and thickness that are not subject to the influence. From this point, in this example, as the material, for example, PP, CPP, P
E, PET, EVA, etc. are adopted. PVC is not used because it is easily shrunk. The thickness of the waterproof sheet 1 in this case is preferably about 0.1 [mm]. This is because it is easy to cope with the problem of the step on the coating.

In this case, the adhesive layer 4 of the waterproof sheet 1 is used.
Is made of butyl rubber or acrylic glue, and the polymer sheet does not react with butyl rubber or acrylic glue. However, since air may enter between the outer wall 3 during the sticking work, in this case, the adhesive layer 4 is formed as shown in FIG. As shown, it is desirable to arrange in a streaked form. That is, the adhesive layer 4 has a thickness of 0.1 to 0.2 [mm] and a width of 5 to 15 [mm], and forms an adhesive-free portion 7 of 1 to 3 [mm] between the adjacent layers. Further, it is desirable to apply a primer treatment or a corona treatment between the waterproof sheet 1 and the coating film 5 in FIG. 4 in order to improve the durability and weather resistance of the waterproof sheet 1.

When a rubber sheet is used as the waterproof sheet 1 shown in FIG. 1 and the like, there is an effect that the nail for attaching the outer wall 3 is used to stop the water in the nail hole, and as shown in FIG. When the waterproof sheet 1 is disposed in the horizontal direction, as shown in FIG.
And, for example, the polymerization length of the polymerization section 8 is set to 100 [mm].
By doing so, the air permeability in the wall can be improved while maintaining the waterproofness. The polymerization length is 100 [m
m] or more for the following reason. That is, 100
This is because in the case of [mm], the safety factor is 130% or more even for the maximum instantaneous wind water pressure of 750 hpa, and it has been proved that water can pass even if the wind can pass.

[0017]

【The invention's effect】

1) According to the waterproofing method in a wall according to claim 1 of the present invention,
By bonding and fixing a waterproof sheet covering the entire surface except for the opening of the pillar or the outer wall between the pillar and the outer wall or on the surface of the outer wall, it is not necessary to perform a sealing process on the joint as in the prior art,
The waterproofness can be greatly improved. In addition, the workability is good, the work efficiency can be improved, the durability can be improved, and the operation can be performed at relatively low cost. 2) According to the second and third aspects of the present invention, the waterproof sheet can be freely arranged along the vertical or horizontal direction, and the waterproof sheet corresponding to the structure of the building can be formed. 3) According to the waterproofing method according to the fourth and fifth aspects of the present invention, weather resistance can be improved by providing an exterior material such as a coating film on the surface of the outer wall or the surface of the waterproof sheet. 4) According to the waterproofing method in a wall according to claim 6 of the present invention,
By setting the overlap length of the overlap portion between adjacent sheets of the waterproof sheet arranged in the horizontal direction to 100 [mm] or more, it is possible to improve the air permeability while maintaining the waterproof property, and to improve the typhoon when the wind speed is large. In this case, water does not pass due to turning over and the like. 5) According to the method for waterproofing the inside of a wall according to claims 7 and 8 of the present invention, by specifying the material and thickness of the waterproof sheet and the adhesive layer, it is economical while maintaining waterproofness and adhesiveness. It is possible to improve the stability and durability. 6) According to the waterproof inside wall method according to the ninth aspect of the present invention, the adhesion of the waterproof sheet can be improved by applying the adhesive layer in advance on the pillar side and then pasting the waterproof sheet. 7) According to the method for waterproofing the inside of a wall according to claim 10 of the present invention, the efficiency of construction work can be improved by forming a waterproof sheet as a rubberized cloth and forming an adhesive layer thereon in advance. 8) According to the in-wall waterproofing method of the present invention, by specifying the materials and thicknesses of the waterproof sheet and the adhesive layer, economical while maintaining waterproofness and adhesiveness. And stability and durability can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a wall structure in an in-wall waterproofing method of the present invention in which a waterproof sheet is interposed between a pillar and an outer wall.

FIG. 2 is a perspective view showing an in-wall waterproofing method of the present invention in which the waterproof sheet in FIG. 1 is disposed in a vertical direction.

FIG. 3 is a perspective view showing a waterproofing method in a wall according to the present invention in which the waterproof sheet in FIG. 1 is disposed in a horizontal direction.

FIG. 4 is a sectional view showing a wall structure in the in-wall waterproofing method of the present invention in which a waterproof sheet is provided on the surface of an outer wall.

FIG. 5 is a perspective view showing an in-wall waterproofing method of the present invention in which a glue-free portion is provided in an adhesive layer and a waterproof sheet is adhered and constructed.

FIG. 6 is a partial cross-sectional view showing a superposed state of a superposed portion of the waterproof sheet, which is disposed in a lateral direction.

FIG. 7 is a sectional view showing an example of a waterproofing process in a conventional wall structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterproof sheet 2 pillar 3 outer wall 4 adhesive layer 5 coating film 6 inner wall 7 glueless part 8 superposition part 9 sealing means 10 joint part 11 waterproof material

Claims (13)

[Claims] 1. A waterproofing method in a wall of a building, comprising a pillar disposed in contact with an inner wall and an outer wall disposed over the surface of the pillar, wherein the pillar is disposed between the pillar and the outer wall, or A waterproofing method in a wall, wherein a waterproof sheet is adhered and fixed to a surface side of the outer wall provided in contact with the pillar so as to cover an entire surface of the pillar or the outer wall except for openings such as windows and doors. 2. The waterproofing method according to claim 1, wherein a plurality of the waterproof sheets are arranged in close contact with each other in a vertical direction or a horizontal direction. 3. The waterproof sheet according to claim 1, wherein each of the plurality of waterproof sheets has a width substantially equal to a distance between the columns, and a joining surface of the adjacent waterproof sheets is disposed on the surface of the columns. The method for waterproofing in a wall according to claim 2. 4. The waterproofing method according to claim 1, wherein an exterior material is provided on the surface of the outer wall or the surface of the waterproof sheet which is the outermost surface. 5. The method according to claim 4, wherein the exterior material is a coating film. 6. A bonding portion of a plurality of waterproof sheets disposed along the lateral direction is bonded in a superposed state when there is no adhesive layer, and the superposed length is 100 [mm] or more. The method for waterproofing in a wall according to claim 2. 7. When the waterproof sheet is provided between the pillar and an outer wall, the waterproof sheet is made of a rubber sheet based on EPDM or EPDM / butyl, and an adhesive layer of the waterproof sheet is 2. The method of waterproofing in a wall according to claim 1, wherein the method comprises unvulcanized butyl rubber. 8. The rubber sheet having a thickness of 0.5 to 1.2.
The method for waterproofing the inside of a wall according to claim 7, wherein the thickness of the adhesive layer is 0.3 to 2.0 [mm]. 9. In bonding the rubber sheet and the pillar,
9. The waterproofing method according to claim 7, wherein an adhesive layer is provided on the pillar side in advance, and a rubber sheet is attached later. 10. The waterproofing in a wall according to claim 7, wherein the rubber sheet is formed from a rubber-coated cloth in which a woven cloth for preventing expansion and contraction is combined, and an adhesive layer is applied to the woven cloth in advance. Method. 11. When a waterproof sheet is adhered to the surface of an outer wall and a coating film is further formed on the surface of the waterproof sheet, the waterproof sheet is preferably a polymer sheet, and the material is PP, CPP, PE, PET, EVA. 2. The waterproofing method according to claim 1, wherein the adhesive layer is made of butyl rubber or acrylic paste. 12. The polymer sheet has a thickness of 0.1 [m].
[m]. 13. The adhesive layer has a thickness of 0.1 to 0.2.
[Mm] with width 5 to 15 [mm]
13. The waterproof method according to claim 11, wherein a glue-free portion having a width of 1 to 3 [mm] is formed between adjacent adhesive layers.