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.. How to do osmosis treatment and blister repair on grp boats.. Fiberglass boat inspection . is your hull waterlogged by osmosis? what is osmosis? water seeps into your boat's hull (often through tiny stress fractures associated with the various fittings and fastenings attached to the hull and deck) and travels via capillary-like action along layers of the fiberglass and resin laminated structure (or fiberglass and balsa wood sandwich) to accumulate in.
This "split the cost" compromise is often agreed for medium to large boats, but for small, low value boats the cost of having a full osmosis treatment done is so high in relation to the boat's value that it is rarely possible to reach this compromise between buyer and seller.. 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-. Most of the chronic osmosis problem boats were seen in europe in the 1980s and 1990s and were made ten to twenty years earlier. epoxy paints [not anybody's "epoxy resin"] designed as moisture diffusion barriers are appropriate, with degreasing and sanding first to ensure a clean surface. i make one such..
