Mapei Mapelastic AquaDefense Waterproofing Membrane | 1 Gal & 5 Gal Mapei Mapelastic AquaDefense is a premixed, liquid-rubber waterproofing and crack-isolation membrane built for tile and stone installations in wet areas. It goes down as a thin, continuous barrier that protects adjacent rooms and floors below from water damage — and works in residential, commercial, and industrial environments. Dries in 30 to 50 minutes and is ready to receive polymer or epoxy mortar. Flood-test as a shower-pan liner after just 12 hours. Apply with a brush or roller over flat, curved, or irregular surfaces. Exceeds ANSI A118.10-LV and ANSI A118.12 standards and is IAPMO-listed for use as a shower-pan liner. For problem areas like coves, corners, cracks, and drains, pair it with Mapei Reinforcing Fabric or Mapeband accessories for added protection. Click here for Technical Data Sheet Select your size: 1 Gallon — ideal for single-room projects, shower pans, or touch-up work 5 Gallon — better value for larger jobs or contractors doing multiple installations Q: How long does Mapei Mapelastic AquaDefense take to dry? A: It dries in 30 to 50 minutes. You can set tile or stone immediately after. Flood testing is possible after 12 hours. Q: Can Mapelastic AquaDefense be used in a shower? A: Yes. It's IAPMO-listed as a shower-pan liner and meets ANSI A118.10-LV and A118.12 waterproofing standards. Q: How much does 1 gallon of AquaDefense cover? A: Coverage varies by substrate and number of coats. Mapei recommends two coats in field areas and at least four coats on corners. Check the Mapei data sheet for exact square footage by application. Q: What's the difference between the 1-gallon and 5-gallon sizes? A: Same product — the 5-gallon is more cost-effective for larger tile projects or contractors doing multiple jobs. Sku: 7339104
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