W.R. Meadows AIR-SHIELD TMP Liquid Membrane Thin-Film Permeable Air Barrier – 5 Gallon Pail

THIN-FILM LIQUID MEMBRANE FOR PERMEABLE AIR AND MOISTURE PROTECTION

AIR-SHIELD TMP is a water-based, single-component air and liquid moisture barrier that cures to form a seamless, elastomeric membrane. Designed to resist air leakage and block liquid water intrusion, it provides a durable, continuous drainage plane. This user-friendly, low-VOC barrier simplifies installation and detailing, offering excellent adhesion, flexibility, and UV stability for both new construction and retrofit applications. A black version is also available for rainscreen assemblies.

USES

• Air and liquid moisture barrier for cavity wall and masonry wall construction
• Suitable for new construction and retrofit applications
• Compatible with a variety of substrates including plywood, exterior gypsum sheathing, and CMU
• Black version ideal for exposed or rainscreen applications

FEATURES 

• High permeability allows moisture vapor to pass through porous building materials
• Highly flexible; bridges cracks in the substrate
• UV stable – gray membrane can be exposed up to six months; black membrane can remain exposed indefinitely
• Single-component, water-based formula allows simple, safe application and easy cleanup
• Liquid-applied for a seamless, monolithic barrier over rough or smooth surfaces
• Sprayable with appropriately configured airless equipment for low-cost application
• Excellent adhesion, even to damp substrates

PACKAGING

• 5 Gallon (18.93 L) Pails
  

COVERAGE

Coverage may vary depending on substrate type, porosity, and environmental 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
• ASTM E2178
• ASTM E2357
• Complies with National EPA VOC Emission Standard for Architectural Coatings, CARB, SCAQMD, Maricopa County, Colorado AIM, Utah Department of Air Quality, LADCO, and OTC Phase I & II VOC regulations

RESOURCES

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