Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1989-09-14
1991-08-13
Gallagher, John J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
523093, 5230917, 52515, 52516, 52746, 156280, 156310, 428443, E04B 200
Patent
active
050393650
ABSTRACT:
A method of encapsulating and providing barrier containment for asbestos which forms an integral part of existing building structures includes applying an encapsulating coating comprising a water soluble polyvinyl acetate emulsion to the exterior surface of the structure. The encapsulating coating is dried to permit maximum penetration and encapsulation prior to performing subsequent steps which may disturb the asbestos fibers in the surface of the building structure. A primer coating comprising a stronger formulation of polyvinyl acetate emulsion is applied to the structure surface. An adhesive coating comprising the stronger formulation of the polyvinyl acetate emulsion is applied to the gypsum side of a sheet of a surface covering product that comprises a substantially dry, semi-hydrated gypsum. The sheet of gypsum product is applied to the surface of the structure by contacting the primer and adhesive coatings with one another. This procedure is repeated until all of the surface of the structure is covered. Each subsequent sheet of gypsum product is applied so as to overlap by about two inches the edge of the prior sheet of gypsum product. A preliminary sealant coating is provided for the exposed surface of the gypsum product and allowed to dry. A vapor barrier coating comprising a water-based acrylic emulsion is applied to the preliminary sealant coating and allowed to dry. A final coating comprising the water-based acrylic emulsion is applied over the vapor barrier coating.
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"Flexi-Wall Plaster in a Roll", Technical Bulletin, Wall & Floor Treatments, Inc., Liberty, SC, 1987.
Cousins John L.
Levy Henry
Rutledge, Sr. William W.
Gallagher John J.
Wall & Floor Treatments, Inc.
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