GoBoard 3-ft x 5-ft x 1/2-in Waterproof Polyisocyanurate Backer Board 90016810

GoBoard is a waterproof, ultra-lightweight, tile backer board from Johns Manville. It is a Polyiso foam board engineered for durability, yet is up to 80% lighter than cement backer boards. It’s easy to handle, cut and install – ideal for both the Pro and DIYers to complete the tile project faster.