Product Review

The USG Durock Brand Liquid Waterproofing Membrane is an acrylic polymer-based product for both commercial and residential tile and stone applications. Suitable substrates include concrete, masonry, cement backerboard, gypsum-fiber panel and gypsum-based cement topping. It can also be used as a shower pan liner in accordance with Section 417.5.2.5 of the IPC and Section 408.7 of the UPC. The product changes color when cured. The USG Durock Brand Liquid Waterproofing Membrane has the lowest permeance rating (0.43 perms at 15 mil dry thickness) of any liquid waterproofing membrane when tested to ASTM E96 Procedure E. It is ideal not only for showers and other wet areas, but also for continuous-use residential and commercial steam showers without an additional vapor retarder. PACKAGING SIZE AND COVERAGE One gallon (3.78 L) and 3.5 gallons (13.2 L). For smooth substrates, 80-100 ft2/gallon with one coat, 40-50 ft2/gallon with two coats, each coat at wet fi lm thickness of 15-20 mil. Coverage will be lower for porous or rough substrates.