I have been using interior Varathane water based poly for years as a topcoat for all my indoor trim work. It gives good gloss and does not yellow.
So far I have used this exterior spar varnish formulation on a storm door and a lantern. The color coats for the storm door were latex, the lantern had a combination of enamel and latex. For the door, the varnish was applied with brush and pad. For the lantern, the varnish was applied with a cheapo HVLP spray gun (unthinned). Once dry, Varathane can be sanded and polished to a mirror finish, but I don't bother for these outdoor projects.
No deterioration so far after several brutal winters and the harsh Summer sun. I am really impressed with modern waterborne technology.
I have finished the remodel of the house. The staining and sealing of the front door and exterior columns were the last project on the remodel.
I used Varethane to seal the columns after restain and on the new front door after it was stained.
I'm confident that our updated look adds curb appeal to the house.
Many of my neighbors have commented that the house has a fresh and updated appearance.
This urethane went on easily, dried quickly and had a good finish. It was easy to use and still looks great. We used the urethane for an outdoor barbecue table and had many compliments during our 4th of July party!
Took quite a few coats for a full coverage seal....
Took quite a few coats for a full coverage seal. Goes on milky and clears when it dries. However when furniture is outside and gets wet, the milky look returns and looks streaky until it dries again. It does clear up when dry. I used this product on a wooden holiday yard sign and it appears streaky in rain/snow. I selected this product because it wasnt supposed to yellow overtime, but I would try another product to avoid this milky finish that appears in the elements.