Custom RedGard Waterproofing & Crack Prevention Membrane is a ready-to-use, elastomeric liquid membrane designed for both commercial and residential tile and stone installations. Its seamless red barrier provides outstanding adhesion to a variety of substrates, creating a continuous moisture seal that reduces the risk of crack transmission and water intrusion.

Easily applied with a roller, trowel or sprayer, this versatile membrane meets all major industry standards—including ANSI A118.10 for waterproofing, Uniform Plumbing Code for shower pan liners, IAPMO listing (R & T No. 4344) and ICC-ES ER-6014 certification. It’s ideal for use on concrete, cement backer boards, wonderboard, exterior grade plywood (dry areas), exterior decks, gypsum drywall, and even as a slab-on-grade moisture barrier under resilient flooring.

Key Features

• Ready-to-use elastomeric waterproofing membrane
• Seamless crack prevention and moisture barrier
• Suitable for interior and exterior tile and stone installations
• Adheres to concrete, cement backer board, plywood, gypsum drywall, decks
• Apply by roller, trowel or airless sprayer
• Meets ANSI A118.10, Uniform Plumbing Code, IAPMO R & T No. 4344, ICC-ES ER-6014

⚠️ WARNING: This product can expose you to Silica, crystalline known to the State of California to cause cancer. For more information, visit www.P65Warnings.ca.gov.