Osmosis, Polyester vs Epoxy resin

[geem]

Do you have a suggestion of epoxy brand to buy?

The cheapest. It all works. West is overpriced and no better than any other brand in my experience. 2:1 epoxies are far easy to deal with when mixing small quantities. West 5:1 is a nightmare when you only need a small amount at a time

 

[Stemar]

I don't know if they're the cheapest, but I usually get my GRP repair stuff from these people ECF - East Coast Fibreglass Supplies

 

[nevis768]

Is it possible that as the hull dries out the blisters will reappear? The yacht had been drying out for about 2 months before I bought it and found the blisters.
The other scenario is that I have mistaken the blisters for osmosis when in fact it was just air beneath the gel coat and the powerful jet wash has removed them? I can't see any oozing in fact I can't see any trace of any previous signs of blisters except the tiny few I mentioned.

Has anyone else had a similar experience?

I looked at a Halberdier and the owner told me exactly the same story.

 

[geem]

I don't know if they're the cheapest, but I usually get my GRP repair stuff from these people ECF - East Coast Fibreglass Supplies

I have used them many times but recently bought some 3:1 from Germany. It was cheaper and works well. I will have to look up the brand name