Mega Strength polyurethane adhesive is a transparent one part moisture curing adhesive which sets in 5 minutes. The product is supplied as a thixotropic gel which is 100% seawater proof, gives exceptionally high bond strength and is resistant to most chemicals. The product foams slightly on application to fill small gaps, which increases bond strength. Invaluable for all bathroom fitters and other tradesmen. Use with No More Ply screws for fixing No More Ply tile backer board. Coverage: approx. 5 - 8 No More Ply boards.