Q1. Yes, a polish and wax every year will keep it looking nice.
Q2. Yes. If feasible, store out of the water over winter. The only way to prevent osmosis it not to put it in the water!!! The odd blister can be ignored.... when they get to the size of side plates... take some advice. On a boat that is worth less than £30,000 it is not worth professional repair so the best course of action is to ignore it.
Thanks for your reply.it is my first grp boat (a Normman 23). It was built in the 80's. Do you think that osmosis is nothing that I should really worry about in the future?
It WILL have osmosis to some degree, it's not worth worrying about, it hasn't sunk yet (I hope) and probably wont sink from osmosis in the next 30 years either. If you don't use it all year round pull it out and let the hull dry for a month or so and blisters shrink back down, inland antifoul is usually porous and won't give any osmosis protection as some think, always pressure wash as soon as it comes out and most crud drops off easily, leave it to dry and it's a git to get off. Avoid painting good grp if you can, if it's crap then paint it.
GRP Hulls
Posted - 16 Jun 2014 : 17:24:30
