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southace said..So a clear coat of what over this?
Dont put this crap on a yacht, i kniw in the uk the swing is to water based ever for cars, in my years i used plenty of this stuff, might be ok in a house but no good in the weather, proplem here is acrylic water based paints stretch, if you put a clear over coat on it shes gonna crack, come time to recoat its gonna be a turd fight, the acrylic flexs the enamel clears dont stretch, having said that sikkens yacht laquer has some stretch too it, used on teak decks its very grippy, im old fashioned i use old fashioned products and techniques hardly taught today in the trade.
If i had a wood yacht or built one from scratch the traditional method is this, old fashioned pink primer which is hard to get, the dutch make the best, so pink primer essentially is very oily due to linseed, it bites into the wood and makes and furry grain stand up you then sand it nice and smooth, you then use oil based undercoat which fills the grain, after sanding and old fashioned oil based filler is use to fill imperfections, you then sand this back dead smooth,
my method for applying finish coats is using your chosen oil enamel i make a half and half mix so half undercoat half enamel, adding a wee bit linseed and turps ill use a roller and foam is best a good quality wide brush to lay off this coat, working in small sections until finished, a further sand using 240 aluminium oxide paper and any touch up filling done, technically id then do a three coat of the finishing enamel, a drop of 2 K hardner can be added to last coat, given time to dry you end up with ultra smooth high gloss finish, totally fine for timber boats, the good thing is touching up is easy, when time comes to freshen the paint off you just knock the gloss finish off it and refinish, oil based paints weather naturally.
GRP is a different story, gelcoat is the first thing that is applied to a mould, susbsequent layets of glass when the hull is removed its already finished, gelcoat is not easy to gelcoat its crap to use, crap to spray , crap to replucate the factory finish, getting a paint like two pack urethane to last ontop of gelcoat is difficult too,
My system is a repair to any cracks and a real good sand, i then just throw the polyurethane enamel straight on, I dont bother with undercoat, this is my lil vintage Caribbean Galaxy, this boat currently has 6 coats of white 4 coats yellow, both is polyurethane enamel I idid it by hand its glassy smooth and hard as stone, sadly i gotta get rid off this lil guy, i need the money to blow on Tern.
Pulling off a good paint job is hard work, fiddly, but the satisfaction is enormous and its cheap in comparison to sending it off to a yard.