USG Liquid Waterproofing Membrane




USG Liquid Waterproofing Membrane is ideal for waterproofing showers and other wet areas, including continuous-use residential and commercial steam showers without additional vapor retarder. USG Liquid Waterproofing Membrane is a liquid-applied waterproofing membrane, vapor retarder and crack isolation product. This product is designed to be rolled, brushed, troweled or sprayed. The application requires one coat when applied over smooth surfaces and is suitable for wet areas from steam showers, floors and counter-tops. This Liquid Waterproofing Membrane works well with all USG Brand shower installation systems, USG Durock, USG Ultralight Foam Board and many more. Please see manufacturer installation guide for proper installation that will ensure a long lasting waterproof surface.



  • Provides a sealed waterproof barrier in one coat on smooth surfaces
  • Provides a sealed waterproof barrier is a two-ply coat over rough surfaces and all horizontal applications
  • Fast drying increases turn around time on the job
  • Easier to install than sheet membrane
  • Ideal for steam showers and wet areas due to its low permeance rating
  • Bonds directly to PVC, ABS or Stainless Steel drains
  • Extremely durable
  • Anti-fracture protection up to 1/8 in. (3 mm) over shrinkage and other non-structural cracks
  • Product changes color when cured



  • 1 gallon (3.78L) – 170402
  • 3.5 Gallon (13.2L) – 170401

Additional information

Sizes Available

1 Gallon, 3.5 Gallon