Introducing, HardieBacker Cement Board with HydroDefense Technology, the first and only waterproof cement backer board. Now the most preferred brand of backer board is even better. The unmatched strength, ease of use, and excellent tile adhesion that professionals and do-it-yourself users alike have come to expect from HardieBacker, now with a waterproof composition throughout the board. Installers can now skip the step of waterproofing the entire board surface area and just waterproof the joints and fasteners (some application areas, such as shower pans, may require additional waterproofing. Refer to local building code requirements). With HardieBacker, professionals and DIY users alike will see lasting results in less time, without sacrificing quality. Passing the ANSI A118.10 test for waterproofness, this first to the market innovation delivers a high-performance product that is easy to use—now installed in less time. Now available at home improvement and tile retailers nationwide.