When moisture is trapped behind it, rot can eventually destroy the encapsulated wood.Īl great explanation of a no soak, I would just like to add a few points. The concern with using rigid epoxy to seal a traditional bottom is that is destined to crack and leak. Wood boats flex and epoxy doesn't so well. There are folks that use their products to encapsulate a traditional (original) bottom and refer to it as a West System bottom. West System is the brand name for a line of epoxy resin based products. If done properly they can last and are "no soak". Some use thin solid planks for the outer layer for appearance. The results is a long lasting "no soak" bottom (if done properly).Ī true West System bottom is built using multiple layers of plywood glued together using epoxy resin (possibly called cold molding?). The outer plank seams are also glued together using 5200. When the wood soaks for a while the planks swell tight and the bottom doesn't leak (as bad).Ī 5200 bottom uses 3M 5200 Caulk (thus the title) to set (glue) frames, inner planking and as full bedding (in lieu of compound) of the outer planks to the inner ones. Original bottoms develop leaks when the wood is dry, the planks shrink in width causing unavoidable gaps. My understanding is that a 5200 bottom is also a "no soak" bottom and might be more popularly referred to using that term than a true West System bottom.
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