backer

Does Hardie Board Come 1/2 Inch? James Hardie 3-ft x 5-ft x 1/2-in HardieBacker Fiber Cement Water Resistant Backer Board. How big is a sheet of Hardibacker? x 5 ft. x 1/4 in . Cement Backerboard. How much does Hardibacker cost? James Hardie 3-ft x 5-ft x 1/2-in HardieBacker Fiber Cement Water Resistant Backer Board.