GoBoard™ is the new ultra-lightweight yet durable, waterproof tile backer board from Johns Manville.ULTRA-LIGHTWEIGHT: Engineered to be dependable even though it’s much lighter weight than cement and other heavy boards, GoBoard can be installed in residential and light commercial tile applications. EASY TO CUT, HANDLE & INSTALL: GoBoard can be quickly cut right where it’s installed with a basic utility knife without crumbling or disintegrating. And, it’s much easier to handle than cement and other heavy boards. BUILT-IN WATERPROOFING: GoBoard saves time and money because you seal only the board joints and fastener locations for a waterproof tile assembly*. GoBoard is available in 1/4” for floors and countertops, and 1/2” for walls, showers, ceilings and floors.