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No. 718-C

AIR-SHIELD™ THRU-WALL FLASHING
Flexible Flashing, 40 Mils Thick

Description
AIR-SHIELD THRU-WALL FLASHING is a self-adhering, flexible membrane flashing. It is a roll-type product that is nominally 40 mils thick.

USE
AIR-SHIELD THRU-WALL FLASHING is a concealed flashing for masonry concrete, wood/steel frames and roofing applications – door and window lintels, sills, spandrel beams, caps and parapets. AIR-SHIELD THRU-WALL FLASHING is designed for use as a thru-wall flashing and dampproofing course.

Features/Benefits

LOW PERMEABILITY – prevents the transmission of air and inhibits moisture vapor through porous building materials. Controlled thickness membrane is ideal for flashing membrane applications. Cross-laminated polyethylene film has excellent tensile strength, elongation and tear-resistance. Modified membrane is flexible at low temperatures. Rugged membrane can actually fold to shape during application as a thru-wall flashing. Excellent adhesion to prepared substrates of pre-cast 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. A low temperature version also available.

DATA
Thickness 40 mils
Roll Sizes Available in cut sizes.
Also available in cut rolls 4”, 6”, 9”, 12”, 16”, 18”, 20”, and 24”
(102, 152, 224, 326, 406.4, 457.2, 508 and 609.6 mm wide.)
NOTE: Some sizes require lead time. All rolls 75 ft. long (22.9 m.)

APPLICATION
All surfaces to receive AIR-SHIELD THRU-WALL FLASHING should be clean and dry, smooth and free from projections that could puncture the membrane. Surfaces shall be free of scale, rust, grease and oil and primed with MEL-PRIME™ from W. R. MEADOWS.

Remove release paper prior to application. AIR-SHIELD THRU-WALL FLASHING should be recessed 1/2” (13 mm) from the face of the masonry. Flashing should not be permanently exposed to sunlight. Do not allow the rubberized asphalt surface of the flashing membrane to come in to contact with sealants containing solvents, creosote, uncured coal tar products, EPDM or PVC components. If AIR-SHIELD THRU-WALL FLASHING is not embedded in the masonry joint, apply a bead of POINTING MASTIC along the top edge to prevent water infiltration behind the flashing membrane.

Proper application is the responsibility of the user. Field visits by W. R. MEADOWS personnel are for the purpose of making technical recommendations only, and are not to supervise or provide quality control on the jobsite.

PRECAUTIONS
Intended for concealed and protected applications, not intended for uses subject to abuse or permanent exposure to the elements.

This material last updated May, 2006.