Custom Building Products has expanded its RedGuard waterproofing brand with a water proof membrane for walls and floors. The RedGuard Waterproofing Fabric Membrane system installs over cement backerboards or gypsum wall boards to prepare showers, tubs surrounds, walls and wet areas for tiling. Installed using either modified or non-modified thin-set mortar, the system is available in 1M (3-ft, 3-in.) wide rolls with two size options of either 54-sq. ft. or 323-sq. ft. in total coverage and includes pre-printed grid lines to simplify cutting.