W. R. MEADOWS AIR-SHIELD Liquid Flashing Membrane
AIR-SHIELD Liquid Flashing is a gun-grade, low-odor elastomeric flashing and detailing membrane from W. R. MEADOWS, formulated with moisture-curing silyl-terminated polyether. It is built for window and door rough openings and joint detailing on exterior gypsum board and sheathing panels, and it ties into the full line of AIR-SHIELD air, vapor, and liquid moisture barriers. The material meets AAMA 714-15 for liquid-applied flashing.
Applied at 12 to 15 mils, one 20 oz. (592 mL) sausage covers 15 to 19 sq. ft. depending on substrate. Tack-free time is 30 minutes ± 15 minutes (ASTM C679), shear strength is 210 psi ± 25 psi, and it passes low-temperature flex at -10°F. Install above 32°F; service range is -20°F to 200°F. Solvent-free at 9.4 g/L VOC, it bonds to damp substrates, resists peel-back for up to 12 months of exposure, and accepts latex paint after 24 hours. Not for structural sealing, below-grade or immersed locations, or as a substitute for thru-wall flashing. Run adhesion tests on OSB and fire-treated wood before full installation.
Features
- AAMA 714-15 compliant: Meets the voluntary specification for liquid-applied flashing.
- Damp-substrate application: Can be installed on clean, damp surfaces.
- Broad substrate adhesion: Bonds to aluminum, brick, concrete, wood, vinyl, and exterior gypsum board.
- Non-sag, gun grade: Guns and tools easily without sagging.
- 12-month exposure: Resists peel-back when left exposed.
- No opening buildup: Spreads without building up in rough openings.
- Wide service range: Rated from -20°F to 200°F and passes flex testing at -10°F.
- System compatible: Works with the entire AIR-SHIELD barrier line and is safe on foam insulation.
W. R. MEADOWS AIR-SHIELD Liquid Flashing Membrane Specifications
| Specification | Details |
|---|---|
| Brand | W. R. MEADOWS |
| Model | AIR-SHIELD Liquid Flashing |
| Product type | Liquid-applied flashing and detailing membrane |
| Packaging | 20 oz. (592 mL) sausage |
| Chemistry | Silyl-terminated polyether (STPE), moisture cure |
| Consistency | Gun grade, non-sag |
| Color | Green |
| Coverage | 15 to 19 sq. ft. (1.4 to 1.8 m²) per sausage at 12 to 15 mils; varies by surface |
| Skin time | Within 30 min. at 70°F (21°C) and 50% RH |
| Tack-free time | 30 min. ± 15 min. (ASTM C679) |
| Shear strength | 210 psi ± 25 psi (ASTM D412) |
| Low temperature flex | Pass at -10°F (-23°C) (ASTM D816) |
| Installation temperature | Above 32°F (0°C) |
| Service temperature | -20°F to 200°F (-29°C to 93°C) |
| Shrinkage | No visible shrinkage after 14 days |
| Exposure time | 12 months |
| Paintable | After 24 hrs., latex paints only |
| VOC content | 9.4 g/L |
| Standards | AAMA 714-15 Voluntary Specification for Liquid-Applied Flashing |
| VOC compliance | Federal, state, and local VOC requirements, including U.S. EPA, LADCO, SCAQMD, and OTC Phase I and II |
| Compatible substrates | Aluminum, brick, concrete, wood, vinyl, exterior gypsum board |
| MasterFormat | 07 27 26 |
| Shelf life | 1 year from date of manufacture when stored indoors, unopened, at 40°F to 90°F (4°C to 32°C) |
