William W Rutledge

US Patent:

50393650, Aug 13, 1991

Filed:

Sep 14, 1989

Appl. No.:

7/407130

Inventors:

William W. Rutledge - Greenville SC
Henry Levy - Taylors SC
John L. Cousins - Greenville SC

Assignee:

Wall & Floor Treatments, Inc. - Liberty SC

International Classification:

E04B 200

US Classification:

156 71

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.

US Patent:

39416321, Mar 2, 1976

Filed:

Mar 17, 1975

Appl. No.:

5/558722

Inventors:

Clyde J. Swedenberg - Greenville SC
Charles C. Fain - Clemson SC
William W. Rutledge - Greenville SC

International Classification:

E04F 1302

US Classification:

156 71

Abstract:

Method and composition for applying a surface covering to a wall or like substrate. The surface covering comprises a flexible strip or sheet of substantially dry, semi-hydrated gypsum, bonded to a re-enforcing mesh or lath. The method includes the steps of coating the rear face of the surface covering sheet with aqueous latex adhesive in an amount which will transfer sufficient water from the adhesive to the gypsum to hydrate and set the gypsum, and, at the same time, invert the latex to a tacky, adherent state; and applying the adhesive-coated surface covering to the substrate.