MiraFlex Membrane A

MiraFlex Membrane A is a versatile, polymer-modified waterproofing membrane engineered for above- and below-grade applications. Formulated with styrene-butadiene latex, this water-based, solvent-free membrane forms a seamless, highly durable waterproof barrier that adheres to concrete, tile, metal, and masonry.

Ideal for use beneath ceramic tile, quarry tile, and marble, MiraFlex Membrane A is also recommended for shower pans, mechanical equipment rooms, and between-slab waterproofing. It features excellent crack-bridging capability (up to 1/8” at 0°F), resistance to water penetration, and flexibility for irregular surfaces. Quick-drying and easy to apply, this IAPMO-listed shower pan liner meets VOC compliance standards for environmentally safe installation.

Key Benefits of MiraFlex Membrane A:

• Seamless waterproofing solution—forms a monolithic barrier across floors and bases
• IAPMO-listed as a shower pan liner—ideal for bathrooms and wet areas
• Excellent adhesion—bonds to concrete, metal, tile, and masonry
• VOC-compliant, non-toxic formula—safe for interior and exterior use
• Superior crack-bridging capability—accommodates substrate movement up to 1/8”
• Fast drying—touch dry in 1-2 hours, fully cured in 12 hours
• Resistant to water penetration—ideal for below-grade and between-slab waterproofing
• Thin-section application—does not interfere with floor elevations
• Easily applied by roller, trowel, spray, or squeegee

Common Applications:

• Underlayment for tile, marble, and quarry tile installations
• Shower pan waterproofing and wet areas
• Below-grade foundation walls and mechanical equipment rooms
• Between-slab waterproofing for commercial buildings
• Moisture protection for balconies, decks, and podium slabs

💡 Available in a 5-gallon pail. Coverage: 64 sq. ft. per gallon at 25 mils wet film thickness (WFT).