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W R Meadows Air Shield LM All Season


W R Meadows Air Shield LM All SeasonPDF

W R Meadows Air Shield LM All Season

Single-Component, Liquid-Applied, Polymer-Modified, Air/Vapor, and Liquid Moisture Barrier

W R Meadows Air Shield LM All Season is a single-component, liquid-applied, polymer-modified air/vapor and liquid moisture barrier. AIR-SHIELD LM (ALL-SEASON) cures to form a tough, seamless, elastomeric membrane, which exhibits excellent resistance to air and moisture transmission. VOC content = 400 g/L.

AIR-SHIELD LM (ALL-SEASON) has been specifically formulated to act as an air/vapor barrier within the building envelope. It may be applied to the most common surfaces and integrated into various wall systems. The material is suitable for application on new construction and restoration projects.


  • Low permeability – inhibits both air and moisture vapor transmission through porous building materials.
  • All-weather application – can be applied at temperatures down to 10° F.
  • Highly flexible – bridges minor cracks, which may form in the substrate.
  • Liquid-applied – simplifies detailing and assures a monolithic, seamless membrane when applied to a rough or smooth surface.
  • Sprayable – with appropriately configured airless spray equipment – low application costs.
  • Excellent adhesion – remains firmly bonded to the substrate.
  • Low VOC – <400 g/L.

5 Gallon (18.93 Liter) Pails
55 Gallons (208.20 Liter) Drums**
**Available upon special order only.

Application Rate
Wet Film Thickness
Cured Film Thickness
17 – 20 ft.²/gal.
80 mil
45 mil (1.15 mm)

Coverage dependant on substrate type, weather, and application, and job site conditions.

Twelve (12) months in an unopened container. Do not store in temperatures over 100° F.

  • Exceeds Air Barrier Association of America (ABAA) Section 07262 Liquid-Applied Air/Vapor Barrier System.
  • Exceeds the requirements of the Massachusetts Commercial Energy Code for Building Envelope Systems.
  • Complies with U.S. EPA, LADCO, and OTC maximum allowable VOC requirements.
  • Complies with Canada VOC Concentration Limits for Architectural Coatings Regulations.
  • Meets CAN/CGSB-51-33, Type I Water Vapor Permeance Requirements.
  • 2005 National Building Code of Canada.

Find out more about this product here.

Check out our other W.R. Meadows products here.


Additional information

Weight48 lbs
Dimensions12 × 12 × 16 in

5 Gallon Bucket