JP3871763B2 - Rooftop waterproofing method - Google Patents
Rooftop waterproofing method Download PDFInfo
- Publication number
- JP3871763B2 JP3871763B2 JP08614497A JP8614497A JP3871763B2 JP 3871763 B2 JP3871763 B2 JP 3871763B2 JP 08614497 A JP08614497 A JP 08614497A JP 8614497 A JP8614497 A JP 8614497A JP 3871763 B2 JP3871763 B2 JP 3871763B2
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- room temperature
- roof
- temperature curable
- waterproofing method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】
【発明の属する技術分野】
本発明は屋上の防水施工方法に関し、特に防水性、耐久性等に優れた防水施工を施す方法に関する。
【０００２】
【従来の技術】
従来からビルや一般家屋等の建造物の屋上（屋根も含む）には種々の防水処理が施されている。これらに用いる屋根材は、耐水性、耐光性、耐熱性、引張り強度、摩擦強度、建物本体の温度による伸縮に対する付随対応性等の過酷な物理特性、化学特性等が要求される。また、屋根材として取り付け作業の簡便性、軽さ、建築材料としての価格の妥当性等も要求される。また多くの屋根材は多数の同一材を反復的に敷設するため材料間の防水不良や耐久性低下が生じやすい。
【０００３】
【発明が解決しようとする課題】
本発明の目的は屋上に防水性、耐久性等の要求物性に優れた防水施工を施す方法を提供することにある。
【０００４】
【課題を解決するための手段】
本発明は、繊維布帛の表片面にシリコーンゴムのコーティング層を配した複数の積層体を用意し、これらの末端部どうしを重ね合わせた形で屋上に配置し、重ね合わせ部に１液室温硬化型シリコーンゴムを付与して圧接し、さらに重ね合わせ部の上部積層体末端を覆うように１液室温硬化型シリコーンゴムを付与して末端部中間層に配した１液室温硬化型シリコーンゴムと一体化させることを特徴とする屋上の防水施工方法である。
【０００５】
本発明ではまず屋根材として繊維布帛の表片面にシリコーンゴムのコーティング層を配した積層シートを用いることを特徴とする。
屋根材を構成する繊維布帛としてはガラス繊維又はポリエステル繊維の織物、編物、不織布が好ましく、特にポリエステル繊維の不織布が最も好ましい。
これらの繊維布帛の表面にコーティングするシリコーンゴムとしては市販の１液性、２液性シリコーンゴムを用いることができる。難燃性シリコーンゴムとして市販されているものは特に好ましい。シリコーンゴムをコーティングしキュアさせることによって屋根材が得られるが、得られる屋根材のシート層は１〜３ｍｍを基準とし、強度等の要求特性に応じ５ｍｍ程度にすることもできる。通常幅２０ｃｍ〜２ｍの長尺シート状とし、施工対象に応じ適宜の大きさに切断される。
【０００６】
このようにしてつくられたシリコーンゴムのコーティング層をもつ繊維布帛を屋上に繊維布帛層を下層として敷設する。
屋上の下地材は特に制限されない。一例としてはスレート板や樹脂モルタル層等がある。その上に上記の屋根材を敷設する。この場合下地層と上記屋根材との接着はたとえばウレタン系接着剤、ニトリルゴム系接着剤等一般的に用いられている適宜の接着剤を用いて行われる。その際一の屋根材の端部とそれに隣接する一の屋根材の末端部を重ね合わせに敷設する。重ね合わせ部の幅は通常３０〜１００ｍｍ程度が好ましい。
この重ね合わせ部間に１液室温硬化型シリコーンゴムを付与する。その付与量は重ね合わせ部全体に及び且つ繊維布帛内に十分に浸透し圧接したとき末端部からはみ出る程度が好ましい。
【０００７】
１液室温硬化型シリコーンゴムとしては脱オキシム型、脱アルコール型又は脱アミド型が好ましい。
１液室温硬化型シリコーンゴムを付与し圧接する。次に重ね合わせ部の上層屋根材の末端部に沿って上層と下層の屋根材を覆うように１液室温硬化型シリコーンゴムを付与する。その幅は上層屋根材の最端部を中心に１０〜１００ｍｍ程度が好ましい。厚さは１〜５ｍｍ程度が好ましい。
かくして得られる屋上防水層は従来の防水層に比しその防水能、耐久性が大幅に改善されており、特に接合部は、離型性のあるシリコーンゴムコーティング層の特性からは予測できないほど、すぐれた接着強度、耐水圧特性を示す。
【０００８】
【実施例】
ポリエステル不織布（東レ社製「アクスター」、ｔ＝１．２５ｍｍ）に熱加硫型シリコーンゴム（東レ・ダウコーニング・シリコーン社製、ｔ＝０．３ｍｍ）をコーティングし熱加硫して幅１２０ｃｍのシリコーンゴムコーティングシートをつくった。
ビル屋上に樹脂モルタル打設後にサンダー仕上げし、そこに２液型水性ウレタン接着剤を塗布し、上記積層シートを末端部５０ｍｍが重なるように下地に付着させた。
次いで重ね合わせ部に１液室温硬化型シリコーンである東レダウコーニングシリコーンＳＨ７８０を十分に付与し、ローラーで上記シリコーンの一部が末端からはみ出るように圧接した。
次いで重ね合わせ部の上層端に沿って幅１５ｍｍ、厚さ２ｍｍの三角シールを同じ１液室温硬化型シリコーンを付与して形成した。
２５℃で５日硬化後引き剥がし抵抗及び接着状態を調べたところ極めて満足のいくものであった。全体としての強度、耐候性、耐久性、防水性も極めて満足のいくものであった。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rooftop waterproofing method, and more particularly, to a waterproofing method excellent in waterproofness, durability and the like.
[0002]
[Prior art]
Conventionally, various waterproof treatments have been applied to the roof (including the roof) of buildings such as buildings and general houses. The roofing material used for these is required to have harsh physical and chemical properties such as water resistance, light resistance, heat resistance, tensile strength, friction strength, and incidental response to expansion and contraction due to temperature of the building body. In addition, it is required to be easy and light in installation work as a roofing material, and have reasonable price as a building material. In addition, many roofing materials are repeatedly laid with a large number of the same materials, so that the waterproofing between the materials and the durability are likely to deteriorate.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a method for performing waterproofing work with excellent properties such as waterproofness and durability on the roof.
[0004]
[Means for Solving the Problems]
In the present invention, a plurality of laminates in which a coating layer of silicone rubber is arranged on the front surface of a fiber fabric are arranged on the roof in a form in which these end portions are overlapped, and one-part room temperature curing is performed on the overlapped portion. One-part room temperature-curing silicone rubber applied to the end part intermediate layer by applying one-part silicone rubber and press-contacting, and further applying one-part room temperature-curing silicone rubber so as to cover the end of the upper laminate of the overlapped part It is a waterproof construction method for the roof characterized by making it.
[0005]
The present invention is characterized in that a laminated sheet in which a coating layer of silicone rubber is disposed on the front surface of a fiber fabric is used as a roofing material.
The fiber fabric constituting the roofing material is preferably a glass fiber or polyester fiber woven fabric , knitted fabric or nonwoven fabric, and most preferably a polyester fiber nonwoven fabric.
A commercially available one-component or two-component silicone rubber can be used as the silicone rubber coated on the surface of the fiber fabric. What is marketed as a flame retardant silicone rubber is particularly preferred. The roof material is obtained by coating and curing the silicone rubber, but the sheet layer of the obtained roof material can be set to about 5 mm in accordance with required characteristics such as strength with reference to 1 to 3 mm. It is usually formed into a long sheet shape having a width of 20 cm to 2 m, and is cut into an appropriate size according to the construction object.
[0006]
The fiber fabric having the silicone rubber coating layer thus prepared is laid on the roof with the fiber fabric layer as a lower layer.
The base material for the roof is not particularly limited. Examples include slate plates and resin mortar layers. The above roofing material is laid on it. In this case, adhesion between the base layer and the roofing material is performed using an appropriate adhesive that is generally used, such as a urethane adhesive or a nitrile rubber adhesive. At that time, the end portion of one roof material and the end portion of one roof material adjacent thereto are laid in an overlapping manner. The width of the overlapping portion is usually preferably about 30 to 100 mm.
One-part room temperature curable silicone rubber is applied between the overlapping portions. The applied amount is preferably such that the amount of the applied portion extends over the entire overlapped portion and sufficiently penetrates into the fiber fabric and protrudes from the end portion when pressed.
[0007]
The one-part room temperature curable silicone rubber is preferably a deoxime type, a dealcohol type, or a deamid type.
A one-part room temperature curable silicone rubber is applied and pressed. Next, a one-component room temperature curable silicone rubber is applied so as to cover the upper and lower roof materials along the end of the upper roof material of the overlapping portion. The width is preferably about 10 to 100 mm centering on the extreme end of the upper roof material. The thickness is preferably about 1 to 5 mm.
The waterproofing roof layer thus obtained has significantly improved waterproofing performance and durability compared to conventional waterproofing layers, and the joints are particularly unpredictable from the properties of the releasable silicone rubber coating layer. Excellent adhesive strength and water pressure resistance.
[0008]
【Example】
A polyester non-woven fabric ("Acster" manufactured by Toray Industries, t = 1.25mm) is coated with a heat-curing silicone rubber (manufactured by Toray Dow Corning Silicone Co., Ltd., t = 0.3mm) and heat vulcanized to have a width of 120cm. A silicone rubber coating sheet was made.
After the resin mortar was placed on the roof of the building, it was sanded, a two-component aqueous urethane adhesive was applied thereto, and the laminated sheet was adhered to the ground so that the end portions of 50 mm overlapped.
Next, Toray Dow Corning Silicone SH780, which is a one-part room temperature curable silicone, was sufficiently applied to the overlapped portion, and pressed with a roller so that a part of the silicone protruded from the end.
Next, a triangular seal having a width of 15 mm and a thickness of 2 mm was formed along the upper layer end of the overlapped portion by applying the same one-pack room temperature curable silicone.
When the peeling resistance and adhesion state were examined after curing at 25 ° C. for 5 days, it was very satisfactory. The overall strength, weather resistance, durability and waterproofness were also very satisfactory.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08614497A JP3871763B2 (en) | 1997-04-04 | 1997-04-04 | Rooftop waterproofing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08614497A JP3871763B2 (en) | 1997-04-04 | 1997-04-04 | Rooftop waterproofing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10280621A JPH10280621A (en) | 1998-10-20 |
| JP3871763B2 true JP3871763B2 (en) | 2007-01-24 |
Family
ID=13878546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08614497A Expired - Lifetime JP3871763B2 (en) | 1997-04-04 | 1997-04-04 | Rooftop waterproofing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3871763B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5890577B1 (en) * | 2015-10-28 | 2016-03-22 | 一瀬産業株式会社 | Construction method for waterproofing and walking resistance on the roof |
-
1997
- 1997-04-04 JP JP08614497A patent/JP3871763B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10280621A (en) | 1998-10-20 |
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