Spar Urethane Application Temperature. Spar varnish vs spar urethane are similar in that they provide a layer over the wood for protection against the elements. You may need to wait between the application of coats for a few hours. It's a one piece flat door — no recessed panels.
My intentions were to brush on the.
Spar urethane is considered to be much easier to apply than polyurethane. I recently redid a table using spar urethane and due to the thickness of this product it didn't coat the then i stained it and added the spar urethane. Discussion in 'all things boats & boating' started by victory 1, jun 6, 2013. Spar urethane is considered to be much easier to apply than polyurethane. If i remember correctly, they say that that generally takes about. Spar urethane will turn white if there is any moisture in the wood. The pics looked impressive and i liked the idea of adding a little protection against the usual scratches and scrapes associated. The helmsman spar urethane isnt bad at all, it does make the wood virtually waterproof (i left a pool of water overnight with no problem), and it has a nice gloss, but the application drives me nuts, at least for a diyer without professional tools.
