W.R. Meadows AIR-SHIELD™ LMP
Short Description
AIR-SHIELD™ LMP is a liquid-applied, vapor-permeable air and moisture barrier designed to enhance building envelope performance by preventing air leakage and water infiltration. This single-component, water-based elastomeric membrane bonds to concrete, CMU, gypsum board, plywood, primed steel, and more, offering superior flexibility, UV resistance, and crack-bridging properties. Sprayable, easy to apply, and low-VOC, AIR-SHIELD™ LMP is ideal for commercial and residential air barrier applications.
AIR-SHIELD™ LMP is a high-performance, liquid-applied vapor-permeable air and moisture barrier designed to control air movement, resist water intrusion, and enhance energy efficiency in building envelopes. This water-based, single-component elastomeric membrane creates a seamless, highly flexible, and durable barrier that bonds directly to precast and cast-in-place concrete, CMU, exterior gypsum board, rigid foam insulation, primed steel, and untreated plywood.
Unlike traditional air barriers, AIR-SHIELD™ LMP remains highly permeable, allowing moisture vapor to escape, preventing trapped condensation and mold formation. With excellent adhesion, crack-bridging capabilities, and UV resistance, it ensures long-term durability in a wide range of environmental conditions. This sprayable air barrier is easy to apply, offering fast, cost-effective installation with minimal waste.
Key Benefits of AIR-SHIELD™ LMP:
- Prevents air leakage and water intrusion—enhances building energy efficiency
- Vapor-permeable—allows moisture vapor transmission, preventing condensation buildup
- Seamless and elastomeric—bridges cracks and irregular surfaces
- UV-resistant—gray membrane exposed for up to six months, black membrane permanently
- Single-component, water-based formulation—low VOCs, environmentally friendly
- Fast and easy application—sprayable for cost-effective installation
- Self-sealing around fasteners—ensures continuous air and moisture protection
- Resists mold and fungal growth—improves indoor air quality
- Wide temperature application range—remains flexible down to -20°F (-28°C)
- Meets ABAA and ASTM standards—ensures compliance with leading air barrier regulations
Common Applications:
- Air and moisture barrier for commercial and residential exterior walls
- Vapor-permeable waterproofing for cavity walls, parapets, and firewalls
- Moisture protection for precast and cast-in-place concrete walls
- Sealing sheathing joints and transitions in exterior wall assemblies
- Enhancing energy efficiency in new construction and retrofit applications
💡 Packaging: Available in 5-gallon pails and 55-gallon drums.
💡 Coverage: 29 sq. ft. per gallon at 55 mils wet film thickness (23 mils dry).
