Corner junctions are critical areas in a shower where movement and water pressure are concentrated. To achieve a reliable seal, one must use a flexible membrane system, such as Schluter-KERDI, which includes specialized pre-formed corner pieces for both inside and outside angles. These components are designed to bond securely to the flat wall membrane, creating a continuous, leak-proof barrier. Attempting to use only flat membrane pieces in a corner can lead to bunching or insufficient coverage, significantly increasing the risk of water infiltration. The installation process requires high-quality thin-set mortar to adhere the membrane to the substrate. Once the membrane is placed, the pre-formed corner pieces are embedded into the fresh mortar, and the edges are smoothed with a flat trowel to eliminate air pockets. This technique reinforces the corners against stress cracks that naturally occur as the home settles. If these corners are not handled correctly, water can easily bypass the tile and grout, leading to mold growth and hidden water damage in the studs. Always prioritize manufacturer-recommended corner seals for the specific waterproofing system you choose.
Key considerations
- waterproof shower corners
- inside corner waterproofing
- outside corner shower
- Waterproofing
- Corner Seal
- Schluter-KERDI