Boat Maintenance

Kasamon Mechanic reseals the portlights on her and husband Mike’s Valiant 40 using GE SCS2000, an effective, silicone-based sealant similar to Dow 795, which we tested for this article. SCS2000 will be featured in a future test on sealing hatches and portlights.

Marine Sealant Adhesion Tests

Testers look at caulk elongation, peel strength, hardness, and more.

We recently launched a new evaluation of marine adhesives and sealants. There is no single caulk that works in all of these cases, so it’s impossible to declare a single “Best Choice adhesive,” but we decided to at least put some numbers on paper to guide you in your choices.

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