AU-1 Hybrid Commercial Construction Sealant
AU-1 Hybrid is a one-component STPE construction sealant. Cures fast, applies on damp surfaces, sticks to Kynar®, aluminum, vinyl, and concrete. AAMA 808.3 / 805.2 / 803.3 / 802.3 compliant.
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AU-1 Hybrid Construction Sealant is a single-component, highperformance waterproof construction sealant featuring superior adhesion, flexibility and durability. It is a silyl-terminated polyether adhesive sealant with elastomeric qualities. AU-1 Hybrid can be applied on damp surfaces, and in areas where moisture is frequently prevalent. Once cured, this sealant is mildew resistant, UV stable, and forms a permanent, waterproof seal, adhering to most common building substrates. It has very low VOC content meeting both CARB non-chemically curing sealant VOC (less exempt solvents): <1.5% and SCAQMD (less water and exempt compounds): <50 g/L requirements. AU-1 Hybrid was designed to perform in all climates, and will maintain adhesion and flexibility in the harshest of conditions.
- 1:Rapid cure - water ready in 1 hour
- 2:No primer required for most substrates
- 3:Easy application in cold environments
- 4:Seals joints up to 2” with proper joint design
- 5:Exceptional resistance to aging and weathering, maintaining flexibility, UV stability, and adhesion over long periods of time
- 6:Paintable in 1 hour
- 7:100% solids
- 8:Superior adhesion to construction materials, including building wrap and Kynar® coated materials
- 9:Meets VOC requirements for all 50 states
- 10:Exceeds ASTM Specification C-920, Type-S, NS, Class 25
- Interior and exterior
- Below grade
- Expansion and control joints
- Concrete panel joints
- Tilt-wall or precast joints
- Exterior Insulation and Finish Systems (EIFS)
- Parapets
- Siding— aluminum, wood and vinyl
- Window frames—aluminum, wood and vinyl
- Flashing
- Stucco
- Building Envelope Waterproofing
- Concrete
- Masonry
- Aluminum
- Wood
- Building Envelope Systems
- Glass
- Natural stone
- Stucco
- Ceramic/Porcelain Tile
- Galvanized
- Vinyl Siding
- PVC
Surfaces to be sealed must be free of all dirt, dust, oil, mildew, loose paint, old caulk or other contaminants. Do not apply on surfaces that are hotter than 140°F or that will exceed 220°F.
AU-1 Hybrid comes ready to use. U-shaped joints should have the proper size backer rod or bond breaker tape installed to prevent 3-point adhesion. The sealant must reach deepest point of the joint. Tooling the joint to a concave is recommended. Smooth bead with a moistened cloth. 90° joints can be tooled to a minimum bead size of 3/8”. Allow 60 minutes prior to painting or before exposure to water.
Immediately after use, clean equipment with mineral spirits. Excess cured sealant must be cut or scraped away. Remove thin films by abrading.
- Vehicle: STPE Hybrid
- VOC CARB: <3.0 wt%
- VOC (excluding water and exempt compounds: 18 g/L
- Hardness: Shore A 46
- Solids: 100%
- Service Temp:: -75ºF to 220ºF
- Temp Application Range: : 21ºF to 140ºF
- Dynamic Joint Movement Applications:: 50% (+/-25%) Interior / Exterior
- Shelf Life: 12 months when stored at 50ºF to 80ºF
- Coverage: 10.1 fl oz: 55 linear ft. at a 3/16” bead
- Tooling Time: 10 to 15 Minutes
- Skin Forming Time: 20 Minutes
- Paint Over Time: I hour
- Full Cure: 24 to 72 hours; dependent on joint configuration, temperature and humidity
- Clean up: Mineral spirits
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