Gypsum backer board

Details Gypsum backer board Gypsum backer board

1989-02-13

1990-08-14

Cannon, James C.

Stock material or miscellaneous articles

Sheet including cover or casing

Encased layer derived from inorganic settable ingredient

156 41, 156 42, 428247, 428703, B32B 304, B32B 514, B32B 1302, B32B 3300

Patent

active

049486470

ABSTRACT:
A backer board for use as a base to which ceramic tile is bonded for a bathtub or shower area, in which the board is made by forming a gypsum core board with fiber glass laminated composite facings, which include an inner fiber glass scrim, an outer fiber glass nonwoven matte and an acrylic film, which film is formed of an acrylic latex of a class commonly employed as an ingredient in Portland cement mortar for applying ceramic tile.

REFERENCES:
patent: 4378405 (1983-03-01), Pilgrim
patent: 4504533 (1985-03-01), Altenhofer et al.

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