Best Flexible
Sika SikaBond Ultimate Grab Instant Polyurethane Adhesive, 10.1 fl oz
Sika
Elastic after cure, absorbs thermal wood movement without cracking the bond
- Elastic flexible adhesive
- Waterproof and UV resistant
- Absorbs movement and vibration
- Compatible with most wood species
Pros
- Elastic after cure, absorbs thermal wood movement without cracking the bond
- UV resistant, maintains bond and color in direct sun exposure
- Handles wood species that move significantly across seasons
- No mixing required, single-component formula
Cons
- Higher price than PVA and epoxy alternatives
- Longer cure time, 24 hours minimum before light handling
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