Everbilt 36 in. x 48 in. x 1/4 in. XPS Foam Waterproof Back Board for Tile Floors (5-Pack) 41278 - The Home Depot

Owens Corning FOAMULAR 150 1 in. x 4 ft. x 8 ft. R-5 Scored Square

Tile Backer Board Breakdown which one is best for showers

Backer Board at

James Hardie HardieBacker 1/4 in. x 4 ft. x 8 ft. Cement Backerboard 750 Sheets 220006PAL - The Home Depot

3/4 in. x 1.25 ft. x 4 ft. R-2.65 Polystyrene Panel Insulation Sheathing (6- Pack) 150705 - The Home Depot

Owens Corning FOAMULAR 150 1 in. x 4 ft. x 8 ft. R-5 Scored Square

Everbilt 36 in. x 48 in. Waterproof Shower Pan with Center Drain (Drain Assembly Included) EVB3648SBC - The Home Depot

Owens Corning FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Square Edge Rigid Foam Board Insulation Sheathing 36L - The Home Depot

Wedi Building Panel 24 X 48 X 1/8 Waterproof Tile Backer, 42% OFF

Wedi Building Panel 24 X 48 X 1/8 Waterproof Tile Backer, 42% OFF

Wedi Fundo Shower Kit - Primo 36-in x48-in | US2000009

Foam Board Insulation at Menards®

The 24 x 48 x 2 bench backer boards create a perfect waterproof seating solution (both shower benches and shower seats) for your shower, and are

24 in. x 48 in. x 2 in. XPS Waterproof Backer Board for Shower Benches and Seats (sold in carton of 3 - 24 sqft total)

Everbilt 18 in. x 36 in. x 1/8 in. XPS Foam Waterproof Backer