AU-1 Elastomeric Patching Compound
Extremely flexible patching compound for permanent crack repair across stucco, EIFS, masonry, and wood siding. Outstanding adhesion. No shiners. Available in four configurations: Smooth/Textured × Knife/Brush.
AU-1 Textured & Smooth Grade Elastomeric Patch Compound is extremely flexible with outstanding adhesive properties. Is formulated to provide a permanent repair for cracks and holes in above grade masonry and stucco surfaces. Once cured the bead is mildew resistant. It is low odor, easy to apply and is soap and water cleanup.
- 1:Used for larger non-structural cracks
- 2:Repair and waterproof cracks in masonry and stucco
- 3:300% Elongation
- 4:Extremely Flexible
- 5:Outstanding Adhesion
- 6:Paintable
- 7:Interior / Exterior
- 8:Apply by brush or flexible blade
- Stucco
- Tilt Wall
- Trim
- EIFS
- Masonry Cracks
- Siding
- Drywall
- Masonry
- Ceramic Tile
- Wood
- Concrete
- Brick
- Metal
- Synthetic Stucco
Surfaces to be patched or repaired must be dry and free of all dirt, dust, oil, mildew, loose paint, old caulk or other contaminates. Only apply when sealant, surface, and air temperature are above 40ºF and rising. Do not apply on surfaces that exceed 140ºF, or when rain is expected.
Use brush, putty knife, or trowel to fill crack with patching compound. Tool elastomeric patch to desired finish
before product dries. Product is not sandable.
- Apply to hairline cracks with a clean brush or other flexible blade.
- Tool patch to match desired texture and profile of the surrounding area.
- Knife Grade Patch should be used for cracks larger than ½”.
- Cracks should be chipped/cleaned out, if greater than ½” in depth a non-gassing backer rod of the proper size should be inserted.
- Two applications may be required for larger gaps. Allow 24 hours between applications.
- Allow 24 hours before top coating.
NOT INTENDED FOR AREAS THAT WILL BE SUBMERGED IN WATER. KEEP FROM FREEZING. NOT FOR FOOD CONTACT SURFACES. PRODUCT CANNOT BE SANDED.
Immediately after use, clean uncured material and tools with soap and water. Remove cured sealant by
cutting with a sharp-edged tool.
- Vehicle: 100% Modified Acrylic Emulsion Polymer
- VOC: Non-chemically curing sealant. VOC (less exempt solvents) is <1.5%
- Pigment: Calcium Carbonate
- Solids: Approximately 65.7%
- Weight per Gallon: 10.5 ± 0.5
- Specific Gravity: Approximately 1.25
- Service Temp: -30ºF to 180ºF
- Temp Application Range: 40ºF and rising. Air temperature no hotter than 95º and substrate not hotter than 140º
- Freeze Thaw Stability: Passes 5 Cycles@ 0ºF (1 cycle = 16hrs. @ 0ºF, 8hrs at 75ºF)
- Flash Point: None
- Consistency: Paste
- Applications: Interior / Exterior
- Life Expectancy: 60-year performance
- Shelf Life: 24 months when stored at 50ºF to 80ºF
- Odor: Mild Sweet Acrylic
- Tooling Time: 10 to 15 Minutes
- Tack Free Time: 30 Minutes
- Paint Over Time: 4 to 6 hours
- Full Cure: 24 to 72 hours
AU-1 Elastomeric Patching Compound
