As your house naturally warms up, cools down, and settles into the ground, its walls shift in slightly different directions. The sharp 90-degree junctions in your shower bear the brunt of this movement. If a basic waterproofing layer is glued tightly into those raw corners, the constant tugging will eventually snap it open like a rubber band stretched past its limit.

Standard, cheap waterproofing products (often called Class 1 or Class 2) are highly rigid and quickly become brittle over time. For reliable remedial repairs, we use premier Class 3 High-Elastomeric Membranes. These materials have the highest possible stretch rating available, meaning they can expand significantly under stress before suffering a structural failure.

No, squeezing fresh silicone into cracked grout joints is just a temporary cosmetic cover-up. Silicone is a surface-level sealer that degrades, grows mold, and peels away under constant exposure to soapy water. True waterproofing has to live completely beneath your tiles—once water gets past that invisible base layer, surface silicone cannot stop it from rotting your framing.