DESCRIPTION
AIR-SHIELD self-adhering air/vapor and liquid moisture barrier is part of a total W. R. MEADOWS system to complete the building envelope. It is a roll-type product that is nominally 40 mils thick. The membrane's controlled thickness is fabricated from cross-laminated polyethylene bonded to specially modified asphalt.

This unique, self-adhesive membrane, protected by a special release paper, is strong and durable. It remains flexible when surface mounted and will adhere to most primed surfaces at minimum temperatures of 40° F (4° C). The membrane provides excellent protection as a tough barrier that won't shrink, sag, dry out, crack or rot. It offers excellent resistance to punctures during installation. The self-healing characteristics of AIR-SHIELD facilitate recovery if minimal damage is sustained under normal use applications, i.e. when penetrated with self-tapping screws or nails.

FEATURES/BENEFITS
* LOW PERMEABILITY - prevents the transmission of air and inhibits moisture vapor through porous building materials.
* Provides a complete above-grade air, vapor and water barrier on a variety of construction materials.
* Controlled thickness membrane is ideal for air barrier applications.
* Cross-laminated polyethylene film has excellent tensile strength, elongation and tear resistance.
* Modified membrane is flexible at low temperatures.
* Excellent adhesion to prepared substrates of 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.
* Self-healing characteristics facilitate recovery if minimal damage is sustained under normal use applications.
* No flame required.
* Low temperature version also available – can be applied at temperatures between 20¢ª F (-7¢ª C) and 60° F (16° C).
* AIR-SHIELD XLT can be applied at minimum temperatures of 0° F (-18° C).

PACKAGING
AIR-SHIELD is packaged in rolls of 38.5" (.97 m) x 75' (22.86 m). AIR-SHIELD can also be cut to desired width.

Optional sizes include:
4" x 75', 6" x 75', 9" x 75', 12" x 75', 16" x 75'
18" x 75', 20" x 75' and 24" x 75'.

STORAGE
AIR-SHIELD should be stored palletized and protected from rain and/or physical damage. Do not store at temperatures above 90º F (32.2º C) for extended periods of time. Do not leave membrane exposed to direct sunlight. Do not double-deck pallets. Store away from sparks or flames. Outdoors, store AIR-SHIELD on pallets and completely cover.

SPECIFICATIONS
* Exceeds the requirements of the Massachusetts Commercial Energy Code for Building Envelope Systems.
* Meets CAN/CGSB-51-33, Type I Water Vapor Permeance Requirements.
* 2005 National Building Code of Canada
* ABAA Section 07261 Self-Adhering Air and Vapor Barrier Specification

USES
AIR-SHIELD self-adhering air/vapor and liquid moisture barrier is designed for a variety of uses.
Primary applications include cavity wall and masonry wall construction. AIR-SHIELD works equally well as an air and/or vapor barrier on 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.