On Orders Over $99
On Orders Over $99
Inside corners are where waterproofing jobs leak. Hand-folded membrane gaps, wrinkles, and pinholes at the exact internal angle that sees the most water. The Aqua Shield Preformed Inside Corner takes the guesswork out: it's factory-shaped to embed seamlessly into the Aqua Shield membrane and form a continuous, durable moisture barrier at the angle — no trimming, no folding, no pinholes.
Whether you're waterproofing a shower pan, wrapping a niche, or sealing a tight wall intersection, set it, embed it, and move on. Uniform coverage, every time, with zero extra steps.
Pro tip: Embed the corner into wet thinset (or Aqua Seal in constantly wet zones) and overlap it with the field membrane and banding so it's fully sandwiched into the system — continuous overlap is what makes the corner watertight.