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W R Meadows Air Shield TMP


W R Meadows Air Shield TMP
Liquid Membrane Thin Film Permeable Air Barrier- PDF

W R Meadows Air Shield TMP
Liquid Membrane Thin Film Permeable Air Barrier-DESCRIPTION:

W R Meadows Air Shield TMP is a water-based air/liquid moisture barrier that cures to form a tough, seamless, elastomeric membrane. This product exhibits excellent resistance to air leakage. When properly applied as a drainage plane, and it prohibits liquid water intrusion into the substrate.

This product has been specifically formulated to act as an air and liquid moisture barrier, allowing vapor to pass through it.   It may be applied to the most common surfaces and integrated into various wall systems. It is suitable for both new construction and retrofit applications.


  • High permeability – allows the transmission of moisture vapor through porous building materials.
  • Highly flexible – bridges cracks, which may form in the substrate.
  • UV resistant – can be left exposed for up to six months.
  • User friendly – single-component, water-based technology allows for the simple, safe application and easy cleanup.
  • 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, even when applied over a damp surface.

5 Gallon (18.93 Liter) Pails


Plywood100 ft.²/gal. (2.45m²/L)
Exterior Gypsum Sheathing100 ft.²/gal. (2.45 m²/L)
Wet Film Thickness16 Mils
Cured Film Thickness9 Mils
CMU Substrate60 ft.²/gal. (1.47 m²/L)
Wet Film Thickness37 Mils
Cured Film Thickness20 Mils

These are theoretical coverage rates and dry film thicknesses.  Depending on substrate type, porosity, and environmental conditions, the final coverage and dry film thickness will vary.

When stored indoors in original, unopened containers at temperatures between 40° – 90° F (4° – 32° C), optimum performance and best use is obtained within one year of the date of manufacture.


  • ASTM E84, Class A
  • ASTM E2178
  • ASTM E2357
  • Complies with National EPA VOC Emission Standard for Architectural Coatings, CARB, LADCO, and OTC Phase I and II VOC regulations.

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

Find more SDS here.

Additional information

Weight48 lbs
Dimensions12 × 12 × 16 in