RedGard acts as a vital protective layer for wet areas such as showers, tubs, and backsplashes. It is a single-component, elastomeric material that can be applied via brush, roller, or sprayer to create a seamless, monolithic barrier. Once cured, this membrane prevents water from migrating into moisture-sensitive substrates such as plywood, OSB, or gypsum wallboard, which would otherwise rot or degrade. Beyond waterproofing, it serves as a crack-isolation membrane, capable of bridging lateral, non-structural substrate cracks up to 1/8 inch, effectively preventing those cracks from migrating into the tile or stone surface. Because it is ready to use, RedGard is a convenient solution, but proper application is mandatory. Achieving the specified dry film thickness is non-negotiable; if the membrane is applied too thin, it will not perform as a waterproof barrier. Always verify the required thickness and number of coats on the container, as these are professional requirements for code compliance. RedGard is not a wear surface and must be covered by tile or stone. For the best results, use it as part of a complete waterproofing assembly and ensure all seams and corners are reinforced with mesh if the manufacturer requires it.
Key considerations
- what is RedGard
- waterproofing shower membrane
- crack isolation
- Custom Building Products
- RedGard
- Membrane