What is RedGard and when do I use it?

RedGard is a liquid-applied waterproofing membrane that creates a flexible, waterproof barrier under tile installations. It's essentially a red-colored rubber coating that you roll or brush onto surfaces before tiling to prevent water damage.

RedGard is essential for wet areas like shower walls, tub surrounds, and bathroom floors where water exposure is constant. Unlike traditional plastic sheeting or tar paper, RedGard bonds directly to the substrate and moves with natural building movement without cracking. This flexibility makes it particularly valuable in Ottawa's climate where freeze-thaw cycles can cause substrate movement.

You should use RedGard in several key situations: behind shower tiles (especially on drywall or cement board), around tub surrounds, on bathroom floors before tile installation, and in any area where water might penetrate tile joints. It's also code-compliant for shower waterproofing in Ontario when applied according to manufacturer specifications. Many contractors prefer it over sheet membranes because it creates a seamless barrier without seams that could potentially leak.

Application requires proper surface preparation - the substrate must be clean, dry, and structurally sound. RedGard goes on pink and dries to a distinctive red color, making it easy to see coverage. Most installations require two coats, and you'll need to reinforce corners and penetrations with fabric tape. The membrane must cure completely (typically 1-2 hours between coats) before tile installation.

For Ottawa homeowners, RedGard is particularly important because our temperature swings can cause building materials to expand and contract. A flexible waterproof membrane helps prevent the costly water damage that can occur when rigid waterproofing systems fail. While it adds to project cost, proper waterproofing prevents thousands in future damage repairs.

For professional waterproofing installation as part of your bathroom renovation, Ottawa Bathrooms ensures proper membrane application that meets Ontario Building Code requirements.