I'm finishing an exterior door with spar urethane. The door is for, and calls for 3-5 coats with light sanding between coats. One side (the outside) of the door went fine. I have one coat on the second side, let it dry overnight and sanded it. As I was blowing off the dust, the coat started peeling off one of the inside panels, much like the peeling of a sun burn. It is not doing this any where else on the door. Any ideas or solutions?
Divebomber
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8,415 Posts
I hate to sound like the 'Prophet Of Doom' but being around tons of boats and living aboard for over 25 years and worked on lots of boats. Helmsman Spar Varnish in my opinion is below bottom of the line. I know you put a lot of work in those doors and they look great. I live on the Gulf of Mexico coast and MinWax just doesn't stand up very well. Hopefully you will fare far better.
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8,415 Posts
The problem that @Divebomber is having can quite possibly be from oil or wax residue left on the surface.
What was the previous coating and how was the surface prepped?
What was the previous coating and how was the surface prepped?
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