Best Marine
3M Marine Adhesive Sealant 5200
3M
Permanently flexible, absorbs constant movement and vibration between wood and concrete
- Permanent polyurethane sealant and adhesive
- Above and below waterline use
- Permanently flexible after cure
- High adhesion to wood and masonry
Pros
- Permanently flexible, absorbs constant movement and vibration between wood and concrete
- Above and below waterline, the most aggressive waterproofing rating
- Used in marine construction, the highest durability standard available
- Creates both a bond and a watertight seal simultaneously
Cons
- Permanent, bonds are extremely difficult to break without damaging one or both surfaces
- Higher price than standard construction adhesive
- Slow cure: 5–7 days for full strength
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