W.R. Meadows AIR-SHIELD LSR Liquid Membrane Air, Vapor & Moisture Barrier – 5 Gallon Pail

LIQUID MEMBRANE FOR AIR, VAPOR, AND MOISTURE PROTECTION

AIR-SHIELD LSR (Liquid Synthetic Rubber) is a single-component, asphalt-free, synthetic rubber-based air/vapor and liquid moisture barrier. It cures to form a tough, seamless, elastomeric membrane that delivers excellent resistance to air and moisture transmission. A low-VOC version is available for projects in regulated areas, making it an environmentally responsible choice for building envelope protection.

USES

• Air/vapor and liquid moisture barrier for cavity wall and masonry wall construction
• Suitable for new construction and restoration projects
• Compatible with a variety of substrates including precast concrete, cast-in-place concrete, masonry (concrete block), interior and exterior gypsum board, Styrofoam, primed steel, aluminum mill finish, anodized aluminum, primed galvanized metal, drywall, and plywood
• Can be integrated into various wall systems for continuous air and moisture protection

FEATURES

• Non-asphaltic formulation meets stringent fire code requirements
• Low permeability prevents air and moisture transmission through porous building materials
• Highly flexible; bridges substrate cracks
• User-friendly, single-component, water-based technology allows safe, simple application and easy cleanup
• Liquid-applied for seamless, monolithic protection over rough or smooth surfaces
• Sprayable with appropriately configured airless equipment for efficient, low-cost installation
• Excellent adhesion, even to damp substrates
• Low VOC content, with an extra-low VOC option available
• Produces no harmful odors
• Compatible with asphalt-based emulsion products
• UV resistant; membrane can remain exposed up to four months

PACKAGING

• 5 Gallon (18.93 L) Pails
  

COVERAGE

• Application Rate: 17 – 22 ft²/gal (1.59 – 2.05 m²/3.8 L)
• Wet Film Thickness: 75 mils
• Cured Film Thickness: 40 mils (1 mm)
  Coverage varies based on substrate type, weather, and application conditions.

SHELF LIFE

• Store indoors in original, unopened containers at 40° – 90° F (4° – 32° C)
• Best used within one year of manufacture

SPECIFICATIONS / STANDARDS

• ASTM E84, Class A
• Exceeds ABAA maximum material air permeance requirements (ASTM E2178)
• Complies with National EPA VOC Emission Standard for Architectural Coatings, CARB, SCAQMD, Arizona Maricopa County, Colorado AIM, Utah Department of Environmental Quality, LADCO, OTC Phase I and II VOC regulations

RESOURCES

• Data Sheet
• Safety Data Sheet
• Low VOC Version Safety Data Sheet
• Plywood Sheathing Joint Detail
• Exterior Sheathing Installation Guidelines
• Rough Opening Installation Guidelines
• Fastener Penetration Technical Bulletin
• Spray Adhesives Technical Bulletin
• Sprayer Equipment Guidelines
• ASTM E84 Flame Spread and Smoke Development Testing Technical Bulletin
• NFPA Documentation
• Adhesion and Chemical Compatibility Technical Bulletin