Features August 2010 Issue

The Great Stickup: Practical Sailor Tests Marine Adhesives, Caulks, and Sealants

Bench tests determine which product is best for different marine applications.

Practical Sailor rounded up seven readily available marine sealants and adhesives, including products from 3M, West Marine, BoatLife, and Sika Corp. The test included four polyurethane-based products, one silicone product, one polysulfide caulk, and one polyether caulk. Testers found that not all caulks will work for all applications. For example, the versatile polyurethane 3M 4200 was fast drying but didnít adhere well to wood, and all polyurethane products have to be kept away from acrylics and Lexan surfaces. Products tested were: 3M 5200 Fast Cure, 3M 4200 Fast Cure, West Marine 8200, Sikaflex 291 Lot, 3M Silicone, BoatLife Life-Caulk, and West Marine Multi-caulk.

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