Boat Osmosis on a Hull Bottom 

Have you owned a boat that has bad osmosis? How did it affect your boating?

Good and informative, as always! Keep up the good work!

do/can barnacles cause osmosis? New boat, here. Brackish water. No Bottom paint. Leave it wet, in season, with periodic bottom cleanings. Also, if professionally Bottom Painted to virgin hull, don't they strip down to gel coat? what's the better path, to minimize blister risk, etc.?

I have randomly found this video due to my hot tub having the same issue 😂

Thank you for this useful information much appreciated

had a guy who knew fiberglass and boats and said to just drill a small hole around the drain plug and the water would find its way out? do you agree?

I wish buyers knew this

If the gelcoat is not waterresistent why is used under waterline. Why not epoxy instead?

Thanks, my minds at rest. If osmosis isn't an issue I'll leave well alone.

Interesting !