What Kind Of Drywall Goes Under A Tub Surround?

What Kind Of Drywall Goes Under A Tub Surround? Install cement board or an equivalent moisture-resistant backing material on walls behind tub and shower enclosures composed of tile or panel assemblies with caulked joints. Don’t use paper-faced backer board, i.e., paper-faced drywall, behind seamed tub and shower enclosures. Can you install a tub surround over