![wedi Tub and Shower Wall Kit 3-ft x 5-ft x 1/2-in Waterproof Polystyrene Foam Backer Board in the Backer Board department at Lowes.com wedi Tub and Shower Wall Kit 3-ft x 5-ft x 1/2-in Waterproof Polystyrene Foam Backer Board in the Backer Board department at Lowes.com](https://mobileimages.lowes.com/productimages/d8631be6-fbda-47ee-9c99-da442b31af28/44113685.jpg)
wedi Tub and Shower Wall Kit 3-ft x 5-ft x 1/2-in Waterproof Polystyrene Foam Backer Board in the Backer Board department at Lowes.com
![Schluter Systems Waterproof Extruded Polystyrene Foam Kerdi Board w/ Thermal Insulation KB121220812 (11x Building Panel 48" x 32" x ½") for Shower Wall & Tile Substrate Coverage 117.3 Sq Ft (10.9 SqM) - Schluter Systems Waterproof Extruded Polystyrene Foam Kerdi Board w/ Thermal Insulation KB121220812 (11x Building Panel 48" x 32" x ½") for Shower Wall & Tile Substrate Coverage 117.3 Sq Ft (10.9 SqM) -](https://m.media-amazon.com/images/I/61wTJf3Ak4L._AC_UF894,1000_QL80_.jpg)
Schluter Systems Waterproof Extruded Polystyrene Foam Kerdi Board w/ Thermal Insulation KB121220812 (11x Building Panel 48" x 32" x ½") for Shower Wall & Tile Substrate Coverage 117.3 Sq Ft (10.9 SqM) -
![Everbilt 32 in. x 4 ft. x 1/2 in. XPS Foam Waterproof Backer Board Underlayment for Wall Tile and Stone (30 per pallet) EVB3248125BP - The Home Depot Everbilt 32 in. x 4 ft. x 1/2 in. XPS Foam Waterproof Backer Board Underlayment for Wall Tile and Stone (30 per pallet) EVB3248125BP - The Home Depot](https://cf-images.us-east-1.prod.boltdns.net/v1/jit/1834613806001/3e20303c-61ee-4882-a397-e7b96b4a6400/main/1280x720/22s560ms/match/image.jpg?pubId=66036796001)
Everbilt 32 in. x 4 ft. x 1/2 in. XPS Foam Waterproof Backer Board Underlayment for Wall Tile and Stone (30 per pallet) EVB3248125BP - The Home Depot
![Ardex TLT 119 Lightweight Vapor-resistant Waterproof XPS Foam Board - Global Trade & Distribution Inc. Ardex TLT 119 Lightweight Vapor-resistant Waterproof XPS Foam Board - Global Trade & Distribution Inc.](https://gtdsupply.com/cdn/shop/files/51nEUvktGdL._SL1500_11111_800x.jpg?v=1698423098)