HardieBacker 3-ft x 5-ft x 1/2-in Water Resistant Fiber Cement Backer Board 220023

HardieBacker is the original fiber cement backer board. Made of 90% premium Portland cement and sand, it is the underlayment that best protects against damage from moisture and mold behind walls, floors and countertops. Its strength, ease of installation and durability make it the ideal product for wet area applications. HardieBacker is the superior choice among other cement, glass mesh and gypsum boards for tile, vinyl, carpet, and wood flooring installation.