EZ Backer is a lightweight, water resistant insulated backer panel designed for wall tile applications. Made of high-density expanded polystyrene reinforced, on both sides, with a fiberglass mesh and cement mortar coating. Meets ANSI A118.10 – Section 4.5 – Waterproofness testing requirements in accordance with the Hydrostatic Pressure Test in ASTM D-4068, Annex A2, as well as ASTM G-21 and G-22 standards. The 2 lb. density foam-cored product is available in 1/2”x 3’ x 5’ panels.Circle 360 on the Reader Inquiry Card.