blackrose Posted March 21, 2019 Author Report Share Posted March 21, 2019 (edited) 9 minutes ago, BilgePump said: The dinghy is polyester resin so any work with epoxy needs to be careful with cleaning and quantities. Just seems overkill really. Is this one of those 'Ace' dinghies about 8' and double skin so weighty? It's a Nova. About 8ft x 4ft Edited March 21, 2019 by blackrose Link to comment Share on other sites More sharing options...
BilgePump Posted March 21, 2019 Report Share Posted March 21, 2019 Sounds very similar. Hadn't seen your mention of the double skin before I posted. Wish I hadn't got rid of mine, tough and stable little boats. Link to comment Share on other sites More sharing options...
rusty69 Posted March 21, 2019 Report Share Posted March 21, 2019 3 minutes ago, blackrose said: It's a Nova. About 8ft x 4ft By the time you have finished it will be a super nova! Link to comment Share on other sites More sharing options...
Murflynn Posted March 21, 2019 Report Share Posted March 21, 2019 if it has a double skin and has been kept on the water, or has collected rainwater over a long period, and seems to be very heavy then it is likely that the foam (polyurethane) between the skins is waterlogged. I bought a 16ft open boat with a false bottom, it was very heavy and the plywood/GRP bottom seemed a bit spongy to step on. I ripped out the false bottom and found sopping wet foam - I estimate it weighed 200kg (doubled the weight of the boat). Link to comment Share on other sites More sharing options...
blackrose Posted March 21, 2019 Author Report Share Posted March 21, 2019 (edited) 19 minutes ago, Murflynn said: if it has a double skin and has been kept on the water, or has collected rainwater over a long period, and seems to be very heavy then it is likely that the foam (polyurethane) between the skins is waterlogged. I bought a 16ft open boat with a false bottom, it was very heavy and the plywood/GRP bottom seemed a bit spongy to step on. I ripped out the false bottom and found sopping wet foam - I estimate it weighed 200kg (doubled the weight of the boat). I'm pretty sure it's just an airgap between the hulls, not foam. It's been semi-sunk and refloated but it hadn't been properly drained. When we stood it up on its transom today and pulled out the two rubber drain bungs, gallons of water came gushing out. Edited March 21, 2019 by blackrose Link to comment Share on other sites More sharing options...
bizzard Posted March 22, 2019 Report Share Posted March 22, 2019 On bits of damaged gel coat I'd use Isopon P40 bridger which is polyester resin with bits of chopped mat mixed in, not porous like chalky P38 body filler. Link to comment Share on other sites More sharing options...
carlt Posted March 22, 2019 Report Share Posted March 22, 2019 Anything other than a couple of coats of paint is going to cost more than the value of the dinghy. Little dinghies like that are almost disposable. I'll be at an abandoned tender sale at a boatyard on the coast next week and should pick up something usable for peanuts. Link to comment Share on other sites More sharing options...
blackrose Posted March 22, 2019 Author Report Share Posted March 22, 2019 (edited) Thanks I've just ordered some from eBay. The outside of the hull is fine but there's a few bits inside that need repair. Edited March 22, 2019 by blackrose Link to comment Share on other sites More sharing options...
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