How to do osmosis treatment and blister repair on grp boats. osmosis repair update + leak hunting + victron energy phoenix charger fiberglass boat repair~ there's a hole in my boat part 1. Fiberglass boat osmosis repair commonly called blisters on the boats hull bottom, is also known as hydrolysis. this condition is caused by the fiberglass being in constant contact with water with out a proper epoxy primer barrier-coat to protect the fiberglass boat hull.. Osmosis : the tendency of fluid substances, if separated by a porous membrane to filter through that membrane and become equally diffused. strictly speaking for osmosis to occur you need fluid on both sides of a membrane. if you have this situation on a boat, you better start bailing..
Osmosis involves many boats, including those apparently healthy. gino ciriaci, our marine expert, make the point on what is usually called 'the fiberglass cancer', taking down common senses and incorrectness, often used for business interests. Often boats that have had full osmosis jobs done previously, and are blistering again, come into this category. all coatings and contaminated glass are removed to find a sound, solid and dry base. remedial rebuilding is done with vinylester resin and p-mat csm, before fill fairing, priming and reantifouling.. In the formation of fiberglass blisters. i n the 16 years that i’ve worked in and managed boat-yards, i’ve encountered few repair subjects that strike as much fear into the hearts of boatowners as that of hull blisters.to an extent,their fear is well placed;hull blis-ters, sometimes referred to as osmosis, are a serious prob-.
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