RedGard Waterproofing Membrane Manufacturer
Custom Building Products leads the industry with RedGard Waterproofing Membrane, a professional-grade elastomeric liquid designed to shield both interior and exterior substrates from moisture damage. This ready-to-use formula creates a seamless, flexible barrier that prevents leaks while simultaneously protecting tile and stone floors from unsightly crack transmission. Trusted for everything from residential steam showers to heavy-duty commercial installations, RedGard bonds effortlessly to various drain assemblies and meets rigorous ANSI standards for superior performance. The inclusion of MoldGard Technology ensures long-term durability by resisting mold and mildew growth, while its quick-dry application helps contractors and DIYers move from prep to tile in record time. Whether you are isolating cracks or installing a full shower pan liner, RedGard provides a high-strength, liquid-applied solution that simplifies complex waterproofing tasks.
Top RedGard Waterproofing Membrane
Custom Building Products RedGard Waterproofing and Crack Prevention Membrane
This flagship liquid-applied membrane is the #1 trusted choice for creating a seamless, rubberized barrier that prevents leaks and isolates substrate cracks up to 1/8 inch.
Custom Building Products RedGard SpeedCoat Waterproofing Membrane
Engineered for rapid project turnaround, this high-performance formula features cross-linking moisture cure technology that allows for flood testing and tiling in as little as one hour.
Custom Building Products RedGard Fabric Membrane
Designed for high-demand wet areas like steam showers, this 100% waterproof and vapor-proof sheet membrane offers a consistent thickness and immediate tile installation without waiting for a liquid to cure.
RedGard by Custom Building Products offers the ultimate shield for your tile projects, blending advanced liquid-applied technology with professional-grade durability.
Product Categories
Innovative protection starts with a versatile lineup designed to stop leaks and structural damage before they begin.
Waterproofing and Crack Prevention Membranes
These high-performance solutions include ready-to-use liquid formulas in multiple pail sizes and specialized roll formats that act as a moisture vapor barrier and isolate cracks up to 1/8 inch.
Customer Experiences
Marcus Henderson I recently remodeled a primary bathroom using the 3.5-gallon RedGard liquid membrane, and the peace of mind it provides is worth every penny. The product applied smoothly with a 3/4-inch nap roller, and I was particularly impressed by the color-change technology—it turns from a bright pink to a solid dark red once it is dry and ready for tile. I used it over cement backer board in a custom steam shower, and after two coats, the surface felt like a thick, rubberized gasket that bonded perfectly to my PVC drain flange.
Sarah Jenkins As a contractor specializing in exterior patios, I rely on RedGard for its incredible versatility on various substrates like concrete and plywood. During my last project, we encountered several hairline fractures in the concrete slab, but this membrane functioned as a perfect uncoupling layer to prevent those cracks from telegraphing through the expensive stone tile. The 1-gallon pails are great for smaller touch-ups, and the quick-dry formula allowed my team to start setting tile the same afternoon we waterproofed the perimeter.
David Moretti I used the RedGard roll-format underlayment for a large kitchen floor renovation, and it completely simplified the process compared to traditional heavy cement boards. It provided an excellent moisture vapor barrier over the subfloor, and I didn’t have to worry about the mess of mixing thin-set just to get my waterproofing layer down. The material is lightweight but incredibly tough, and knowing it meets ANSI A118.12 standards for crack isolation gives me total confidence that this floor won’t shift or grout-line crack over the next decade.
RedGard FAQ
How many coats of RedGard are required for waterproofing?
For a full waterproof seal, you must apply two heavy coats at a rate of 55 square feet per gallon per coat, ensuring there are no pinholes or thin spots.
Does RedGard change color when it is dry?
Yes, the product is formulated to go on bright pink and transition to a solid, dark red color to indicate that it has cured and is ready for tile installation.
Can RedGard be used in steam showers?
Absolutely, RedGard is rated for use in steam showers as it acts as an effective vapor barrier when applied to the correct thickness.
What substrates are compatible with RedGard liquid membrane?
It bonds effectively to concrete, cement backer boards, exterior-grade plywood (interior use), and even clean metal or plastic drain assemblies.
How long should I wait before performing a flood test?
You should typically wait 24 hours after the final coat has dried before performing a flood test to ensure the membrane has fully cured.