04/17/2026
Shower niches are legitimately one of the more frequent waterproofing failure points in showers. When you recess storage into a shower wall, you create extra corners, seams, and horizontal surfaces where water can pe*****te if not handled carefully. Without proper waterproof membrane coverage on every angle, water can seep through tile grout and behind the niche into wall cavities, potentially causing mold, insulation damage, and structural rot.
Most niche leaks stem from issues like flat shelves that allow water to pool, failing to waterproof internal corners, or using incompatible membrane systems. Integrating the niche directly with the shower’s waterproofing system and ensuring slope toward the interior helps reduce those risks.