JP4490212B2 - Dry outer sealant, its construction method and renewal method - Google Patents

Description

  The present invention relates to a dry outer wall joint waterproof material, its construction method and renewal method.

Using tape-like water-stopping material and gasket, place the tape-like water-proofing material so that the middle side is located at the back of the joint at the joints of the outer wall joints, and both sides are opposite to both sides that sandwich the joints space The outer wall joint is water-stopped by bending the U-shape and sticking the adhesive surface provided on the outer surface side of both sides to the opposite surface parts sandwiching the joint inner space, and the outer wall joint is tape-like water-stop A dry-type outer wall joint water-stopping structure that uses a gasket to stop water on the outdoor side of the material is considered.
JP-A-9-256498

  However, with regard to the construction method for forming the dry-type waterstop structure as described above, a technique has been established in which the adhesive surfaces on both sides of the tape-shaped waterstop material are well adhered to both opposing surface portions of the joint space. It has not been developed and is still under development.

  In such a background, the present invention is capable of adhering the adhesive surfaces of both sides of the tape-shaped water-stopping material to both opposing surface portions of the joint-internal space portion of the outer wall joint, and further providing the tape-shaped water-stopping material. It is an object of the present invention to provide a dry-type outer wall joint waterproofing material and the like that can efficiently install a material and a gasket in a joint interior space of an outer wall joint.

The above problem is that the inner wall portion of the outer wall joint is bent in a U shape so that the middle side portion is located behind the joint and both side portions are opposed to both side portions sandwiching the joint space portion. A tape-like water-stopping material that water-stops the outer wall joint by sticking the adhesive surface provided on the outer surface side of the part to both opposing surface parts sandwiching the joint inner space part;
A release paper body that covers the adhesive surface of each side edge of the tape-shaped water-stopping material, and is peeled off so as to be folded back at the middle side of the tape-shaped water-proofing material and protrude outward. A pair of release paper with an operation unit;
A connecting piece that releasably connects both release papers on the back side of the intermediate side of the tape-shaped waterstop material;
Attached to the tape-shaped water-stopping material, the outer wall joint is water-stopped on the outdoor side of the tape-shaped water-stopping material, and is projected between the both sides of the tape-shaped water-stopping material in the joint space, This is solved by a dry outer wall joint water-sealing material characterized in that it is provided with a resilient gasket that presses the portion against both opposing surface portions sandwiching the joint space portion.

  In addition, the above problem is that the outer wall joint waterproofing material is used, and the water sealing member is fitted into the joint inner space portion of the outer wall joint from the tape-shaped water sealing material side, and then the two stripping operation parts are connected to the outdoor side. This is solved by a water-stopping material construction method characterized in that the release papers are separated from each other by applying a tensile force to and then peeled off from the adhesive surface of the tape-like water-stopping material.

  In the outer wall joint waterproof material and the construction method described above, since the adhesive surfaces on both sides of the tape-like waterproof material are covered with the release paper, the waterproof material is removed from the tape-like waterproof material side of the outer wall joint. In the process of fitting into the joint space, the adhesive surface on both sides of the tape-shaped water-stopping material does not unintentionally stick to the opposing surface that sandwiches the joint-space, and the tape-shaped water-stopping material is used. It can be smoothly installed at a predetermined position in the joint space.

  Moreover, since both release papers are connected by a connecting piece on the back side of the intermediate side portion of the tape-shaped water-stopping material, in the process of fitting the water-stopping material into the joint space of the outer wall joint, The release paper is not peeled off from the adhesive surface due to the friction between the facing surface sandwiching the space and the release paper, and the tape-like water blocking material can be smoothly installed at a predetermined position in the joint space.

  The connecting piece connects both release papers in a separable manner, and each peeling operation portion of both release papers is folded back from the release paper main body on the side of the intermediate side of the tape-shaped water blocking material. Since it is extended so as to protrude to the outdoor side, if a tensile force is applied to the peeling operation section of both release papers, the release papers are separated from each other as described above, and both release papers are fixed to tape. It can be peeled off from the adhesive surface of the water material.

  The gasket is provided so as to protrude between both side portions of the tape-like water blocking material in the joint space portion, and has elasticity to press the both side portions against both opposing surface portions sandwiching the joint space portion. Therefore, the adhesive surfaces on both sides of the tape-shaped water-stopping material are pressed against both opposing surface portions sandwiching the joint space by the elasticity of the gasket, and the adhesive surfaces on both sides of the tape-shaped water-stopping material are The outer wall joint can be firmly stopped with a tape-like water-stopping material by firmly adhering to both opposing surface portions sandwiching the joint space.

  In this way, the adhesive surfaces on both sides of the tape-like water-stopping material can be adhered well to both opposing surface portions of the joint inner space portion of the outer wall joint.

  Further, the gasket is attached to the tape-like water-stopping material and integrated with the tape-like water-stopping material, and the gasket and the tape-like water-stopping material are simultaneously fitted into the joint space of the outer wall joint. Therefore, both can be efficiently installed in the joint space and the construction can be performed efficiently.

  Further, the present invention provides a dry waterstop structure for the outer wall joint formed by the above construction method, wherein the gasket is detachably attached to the tape-like waterstop material, and the gasket is tape-like to the waterstop structure. The water-stopping material is characterized in that it is separated from the water-stopping material and is taken out to the outdoor side while leaving the tape-like water-stopping material in the joint space, and then a new gasket is fitted into the joint space from the outdoor side. Also includes a material update method.

  In other words, the outer wall joint water-stopping material has a gasket that is separably attached to the tape-like water-stopping material. Therefore, when renewing the water-stopping material, the old gasket is separated from the tape-like water-stopping material and the tape is used. The water-stopping material can be taken out to the outside while remaining in the joint space, and the water-stopping material can be renewed cost-effectively by using the tape-like water-proofing material that is behind the gasket and hardly deteriorates. This can be done advantageously. Moreover, even when the gasket is renewed in the rainy season, the tape-like water blocking material remains in the joint space, so that it is possible to prevent rainwater from entering the indoor side.

  Since the present invention is as described above, the adhesive surfaces on both sides of the tape-shaped water-stopping material can be properly adhered to both opposing surface portions of the joint space portion of the outer wall joint, and the tape The water-stop material and gasket can be efficiently installed in the joint space of the outer wall joint. In addition, the joint water-stopping material can be advantageously updated in terms of cost.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  In the outer wall joint waterproof material 1 of the embodiment shown in FIG. 1, 2 is a tape-like waterproof material, and 3 is a gasket.

  The tape-shaped water blocking material 2 is made of, for example, butyl tape having one surface as an adhesive surface, and is bent into a U-shaped cross section at the joint inner space 4 of the outer wall joint as shown in FIG. The side part 2a is positioned in the depth of the joint, the side parts 2b and 2b are opposed to the opposing surface parts 6 and 6 sandwiching the joint space part 4, and the adhesive surface 5 of the both side parts 2b and 2b is connected to the joint part space part 4. The outer wall joints are water-stopped by adhering to the sandwiched opposing surface portions 6 and 6. In addition, in this embodiment, the front-end | tip of the both-sides side parts 2b and 2b of the tape-shaped water stop material 2 installed in the joint space part 4 exceeds the base material 7 of an outer wall, and is in the surface of the side part of the outer wall surface material 8. The width of the base material 7 is designed to be covered with the tape-shaped water blocking material 2.

  As shown in FIG. 1, the adhesive surfaces 5 of both side portions 2 b and 2 b of the tape-like water blocking material 2 are covered with release papers 9 and 9, respectively. Each release paper 9 is folded back on the side of the release paper main body 9a covering the adhesive surface 5 of the side edge 2b of the tape-shaped water blocking material 2 and the intermediate side 2a of the tape-shaped water blocking material 2, and the outdoor side. And a peeling operation portion 9b extended so as to protrude to the side, and by pulling the peeling operation portion 9b, the release paper main body portion 9a is peeled off from the intermediate side portion 2a side of the tape-shaped waterstop material 2. It is made like that.

  Further, the two release papers 9 and 9 are connected by a connecting tape 10 as a connecting piece on the back side of the intermediate side portion 2 a of the tape-shaped water blocking material 2. The perforation 10a is inserted and the release operation parts 9b and 9b are pulled to break the perforation 10a so that both release papers 9 and 9 can be separated.

  The gasket 3 is used to stop the outer wall joint on the outdoor side with respect to the tape-shaped water blocking material 2, and is provided on the side opposite to the adhesive surface of the tape-shaped water blocking material 2. Of the tape-shaped water-stopping material 2 is projected between both side portions 2b, 2b, and the both side portions 2b, 2b are elastically pressed against both opposing surface portions 6, 6 sandwiching the joint space portion 4. In addition, the half portion on the base end side is configured to be elastically pressed against both opposing surface portions 6 and 6 sandwiching the joint space portion 4.

  A closed-cell type or independent / open-cell type sponge 11 is interposed between the tip of the gasket 3 and the intermediate side 2a of the tape-shaped water blocking material 2, and the gasket 3 and the sponge 11, and the sponge 11 and the tape. The gasket 3 is bonded and the gasket 3 is integrated so that the sponge 11 can be separated from the tape waterproof material 2 while leaving the sponge 11 on the tape waterproof material 2. It is attached to a weakly bonded state.

  The construction of the outer wall joint water stop using the above outer wall joint water stop material 1, as shown in FIGS. 2 (b) and 2 (b), the water stop material 1 from the tape-like water stop material 2 side, For example, it fits into the joint space part 4 of the vertical joint of the outer wall. Reference numeral 12 denotes a building structure frame such as a pillar.

  Since the adhesive surfaces 5 of both side portions 2b, 2b of the tape-shaped water-stopping material 2 are covered with release papers 9, 9, the water-stopping material 1 is connected to the tape-shaped water-stopping material 2 from the side of the joint between the outer walls. In the process of fitting into the portion 4, the adhesive surfaces 5 of the both side portions 2 b and 2 b of the tape-like water blocking material 2 will unintentionally adhere to the opposing surface portions 6 and 6 sandwiching the joint space portion 4. The tape-shaped waterstop material 2 can be smoothly installed at a predetermined position in the joint space 4.

  Moreover, since the release papers 9 and 9 are connected by the connecting tape 10 on the back side of the intermediate side 2a of the tape-shaped water-stopping material 2, the water-stopping material 1 is fitted into the joint space 4 of the outer wall joint. In this process, the release papers 9 and 9 are not peeled off from the adhesive surface 5 due to friction between the opposing surface parts 6 and 6 and the release papers 9 and 9 sandwiching the joint space 4, and the tape-like waterstop material 2 can be smoothly installed at a predetermined position in the joint space 4.

  Further, in the present embodiment, a closed-cell type or an independent / open-cell type sponge 11 is interposed between the gasket 3 and the tape-like water blocking material 2, so that the gasket 3 is located at the back of the joint space 4. The sponge 11 swells on both sides, and the contact area between the side portion 2b of the tape-shaped water blocking material 2 and the joint-facing surface portion 6 can be increased.

  Thereafter, as shown in FIG. 3 (c), if a pulling force is applied to the peeling operation portions 9b, 9b of the release papers 9, 9, the connecting tape 10 is broken at the perforation 10a, and the release papers are released. 9 and 9 are separated from each other. If the operation sections 9b and 9b are pulled out to the outdoor side, the two release papers 9 and 9 are removed from the adhesive surface 5 of the tape-shaped water blocking material 2 as shown in FIG. Can be peeled off.

  The gasket 3 protrudes between the side portions 2b and 2b of the tape-shaped water blocking material 2 in the joint space portion 4, and both sides 2b and 2b sandwich the joint space portion 4 therebetween. Since it has the elasticity to elastically press against the opposing surface portions 6, 6, when the release papers 9, 9 are peeled off, the adhesive surfaces 5 on both side portions 2 b, 2 b of the tape-like water blocking material 2 are formed on the gasket 3. Both opposing surface portions 6, 6 are pressed against both opposing surface portions 6, 6 sandwiching the joint interior space portion 4 by elasticity, and the adhesive surfaces 5 of both side portions 2 b, 2 b of the tape-shaped water blocking material 2 sandwich the joint joint space portion 4. The outer wall joint is firmly sealed with the tape-shaped water-stopping material 2. In this way, the adhesive surfaces 5 of the both side portions 2b, 2b of the tape-shaped water blocking material 2 can be adhered to the opposing surface portions 6, 6 of the joint inner space portion 4 of the outer wall joint in a good condition. Needless to say, the outer wall joint is also stopped by the gasket 3.

  Further, the gasket 3 is attached to the tape-like water-stopping material 2 and integrated with the tape-like water-stopping material 2, and the gasket 3 and the tape-like water-stopping material 2 as shown in FIGS. Are fitted in the joint space portion 4 of the outer wall joint at the same time, so that both can be efficiently installed in the joint space portion, and the outer wall joint using the tape-like water-stopping material 2 and the gasket 3 is provided. It is possible to efficiently perform the water stoppage.

  And, when performing the renewal due to aging degradation of the gasket, etc., the gasket 3 and the tape-like water blocking material 2 can be separated by the above weak adhesion, so as shown in FIGS. While leaving the tape-like water blocking material 2 in the joint space 4, only the old gasket 3 can be removed from the joint space 4, and the tape-like water blocking material 2 is behind the gasket and hardly deteriorates. Can be used as they are without replacement, and as shown in FIGS. 5 (a) and 5 (b), a new gasket 3 can be fitted into the joint space to be renewed. Can be advantageously performed. Moreover, in this renewal construction, the tape-like water blocking material 2 remains in the joint space 4 and is maintained in a water-stopping state, so that rainwater does not enter the room even if it rains.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where the sponge 11 and the gasket 3 are in a weakly bonded state is shown in order to make the gasket 3 and the tape-like water blocking material 2 separable. The material 2 may be weakly bonded. Moreover, the sponge 11 in the outer wall joint waterproof material 1 may be omitted. Moreover, this invention may be used for the water stop of the outer wall joint of a new building, and may be used for renovation of the outer wall joint of an existing building.

The outer wall joint waterproof material of embodiment is shown, A figure (I) is a cross-sectional view, A figure (B) and a figure (C) are cross-sectional perspective views. Drawing (a) and figure (b) are the section top views which show sequentially the construction method of a water stop material with Drawing 3 (c) (d). Drawing (c) and figure (d) are sectional top views which show sequentially the construction method of a water stop material with Drawing 2 (a) (b). FIGS. 5 (a) and 5 (b) are cross-sectional plan views sequentially showing a method for updating a water stop material together with FIGS. FIGS. 4 (a) and 4 (d) are cross-sectional plan views sequentially showing a method for updating a water stop material together with FIGS.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Dry-type outer wall joint waterproof material 2 ... Tape-like waterproof material 2a ... Middle side part 2b ... Side part 3 ... Gasket 4 ... Joint space part 5 ... Adhesive surface 6 ... Opposite surface part 9 ... Release paper 9a ... Release Pattern body 9b ... peeling operation part 10 ... connecting tape

Claims (3)

It is bent into a U-shape at the joint inner space of the outer wall joint so that the middle side is located at the back of the joint and both sides are opposed to both sides sandwiching the joint inner space. A tape-like water-stopping material that stops the outer wall joint by sticking the provided adhesive surface to both opposing surface parts sandwiching the joint interior space part;
A release paper body that covers the adhesive surface of each side edge of the tape-shaped water-stopping material, and is peeled off so as to be folded back at the middle side of the tape-shaped water-proofing material and protrude outward. A pair of release paper with an operation unit;
A connecting piece that releasably connects both release papers on the back side of the intermediate side of the tape-shaped waterstop material;
Attached to the tape-shaped water-stopping material, the outer wall joint is water-stopped on the outdoor side of the tape-shaped water-stopping material, and is projected between the both sides of the tape-shaped water-stopping material in the joint space, A dry outer wall joint water-sealing material, comprising: a gasket having elasticity that presses the portion against both opposing surface portions sandwiching the joint space portion.   The outer wall joint waterproof material according to claim 1 is used, and the water stop material is fitted into the joint inner space of the outer wall joint from the tape-shaped water stop material side, and then the two stripping operation parts are connected to the outdoor side. A method for applying a water-stopping material, wherein the release paper is separated from each other by applying a tensile force, and then the two release papers are peeled off from the adhesive surface of the tape-like water-stopping material.   In the dry-type waterstop structure of the outer wall joint formed by the construction method according to claim 2, the gasket is detachably attached to the tape-shaped waterstop material, and the gasket is attached to the tape-type waterstop. The tape-shaped water-stopping material is separated from the material and removed to the outdoor side while remaining in the joint space, and then a new gasket is fitted into the joint space from the outdoor side. Update method.

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