Guest guest Posted July 7, 2010 Report Share Posted July 7, 2010 Beside the backer board, which is cement with no paper, used for behind ceramic tile like in showers, there is also dense armor, which is drywall (gypsum board) without paper, (they use a layer of spray fiberglass and a bonding agent) usually used for exterior sheeting. Easier to use than backer board. Just test a piece of both, see what happens. The bonding agent in the paperless coating may be n issue. ________________________________ Quote Link to comment Share on other sites More sharing options...
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