SELF-ADHERING AIR-BARRIER AND FLASHING MEMBRANE
Provides a complete and tough "above-grade" water, air and vapor
barrier on a variety of construction materials.
SEALTIGHT AIR-SHIELD Self-Adhering
Air-Barrier and Flashing Membrane 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 even at temperatures down to 25°F (-4°C). The membrane
provides excellent protection as a tough barrier or flashing 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 damage is sustained.
SEALTIGHT AIR-SHIELD Self-Adhering Air-Barrier and Flashing Membrane is
designed for a variety of uses. Besides its air barrier and vaporproofing
capabilities, AIR-SHIELD is ideal for numerous concealed flashing applications
including parapet, thru-wall at-the-roof, head, window sill, thru-wall
at-the-floor, spandrel, doorjamb and frame, foundation and expansion joint. In
addition, it is used to protect seams around windows, doors, construction joints
and penetrations, etc. Primary applications include cavity wall and masonry wall
construction. AIR-SHIELD works equally well as an air or vapor barrier on
concrete, masonry (concrete block), gypsum board, styrofoam, plywood, primed
steel, aluminum mill finish, anodized aluminum and primed galvanized metal.
Features and Benefits
|Self-healing characteristics facilitate recovery if
damage is sustained
|Provides complete "above-grade" water and air
barrier on a variety of construction materials
|Rugged membrane can actually fold-to-shape during
application as a thru-wall flashing
|Controlled thickness membrane is ideal for either air
barrier or flashing membrane applications.
|Modified membrane is flexible at low temperatures.
|Cross laminated polyethylene film has excellent tensile
strength, elongation and tear resistance.
|Excellent adhesion to prepared substrates of concrete,
concrete block, primed steel, aluminum mill finish, anodized aluminum,
primed galvanized metal, drywall and plywood.
|Membrane resists air, moisture vapor and water.
|No flame required.|
||40 mils (1mm)
|Pliability @ -25°F (-32°C):
|ASTM D 412 (MD, psi):
|ASTM D 882 (MD, #/in.):
|ASTM D 412 (MD, %)
|ASTM D 882 (MD, %)
|Puncture Resistance (# Force):
|ASTM E 154
|Water Vapor Transmission (grains/sq.
|ASTM E 96
|Water Absorption (% by weight):
|ASTM D 570
||25°F (-4°C) Min.
AIR-SHIELD is packaged in rolls of 36" (.91m) x 67' (20.42m).
AIR-SHIELD can also be cut to desired width.
Optional sizes include:
4" x 67', 6" x 67', 9" x 67', 12" x 67', 16" x 67'
18" x 67', 20" x 67' and 24" x 67'.
Coverage is approximately 190 sq. ft. (17.7m²) when lapped 2" (50mm)
on side and end laps.
AIR-SHIELD should be stored palletized and protected from rain and/or
physical damage. Do not store at temperatures above 90ºF (32.2ºC) 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.
SURFACE PREPARATION: All surfaces to be protected must be clean, dry,
frost-free and smooth. Remove any sharp protrusions and repair all defects.
PRIME: All surfaces to which AIR-SHIELD is to be applied
must be primed with MEL-PRIME Water-Base or MEL-PRIME Solvent Base VOC Primer.
Primer may be applied with a manual sprayer or roller to an area that is to be
covered the same day. Uncovered areas must be re-primed the next day. See primer
container for complete application, drying information and precautions.
USAGE: AIR-SHIELD will bond to primed concrete, primed wood or metal surfaces,
either vertically, or overhead, providing an air-barrier to seal joints.
APPLICATION...Apply membrane to primed surface by removing the release paper and
rolling the membrane firmly into place. Insure the membrane is fully adhered and
remove all wrinkles and/or fish mouths. Cut the AIR-SHIELD Membrane with a
utility knife to detail around protrusions and masonry reinforcing. Seal all end
laps and protrusions with SEALTIGHT Pointing Mastic. Overlap subsequent courses
of membrane a minimum of 2 inches. Vertical terminations of AIR-SHIELD should
either be tied into the wall system or mechanically fastened with the use of
SEALTIGHT TERMINATION BAR. When used as a flexible wall flashing, AIR-SHIELD
should be recessed a minimum of 1/2" from the exposed face of the wall.
Flashing should not be permanently exposed to sunlight. Do not allow the
rubberized asphalt surface of the flashing membrane to come in contact with
sealants containing solvents, creosote, uncured coal tar products or EPDM.
GENERAL: AIR-SHIELD Self-Adhesive Air-Barrier and Flashing Membrane can be
applied at temperatures of 25ºF (-4ºC) or higher. Remove the release paper
only as the membrane is being applied. AIR-SHIELD is not designed for permanent
exposure. Good construction practices call for application of insulation as soon
as possible to protect the air barrier and/or flashing.
CLEANUP: Tools, etc. can be cleaned with mineral spirits, paint thinner or
No adverse effects expected with normal product use. Cotton work gloves and
safety goggles are recommended.
Refer to Material Safety Data Sheet for complete Health and Safety Information.
This material last updated February 2001.
W. R. MEADOWS, INC. warrants that, at the time and place
we make shipment, our materials will be of good quality and will conform with
our published specifications in force on the date of acceptance of the order.
THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY,
EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY
OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the
exclusive remedy for breach of this Warranty, we will replace defective
materials, provided, however, that the buyer examine the materials when received
and promptly notify us in writing of any defect before the materials are used or
incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has
shipped the materials, all our Warranty and other duties with respect to the
quality of the materials delivered shall conclusively be presumed to have been
satisfied, all liability therefore terminates, and no action for breach of any
such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event
be liable for consequential damages. Unless otherwise agreed to in writing, no
warranty is made with respect to materials not manufactured by W. R. MEADOWS,
INC. We cannot warranty or in any way guarantee any particular method of use or
application of the performance of materials under any particular condition.
Neither this Warranty nor our liability may be extended or amended by our
salesmen, distributors or representatives, or by our distributor's
representatives, or by any sales information or drawings.