Spar Varnish Over Paint
Helmsman spar urethane is not recommended for large exterior surfaces where maintenance would be difficult such as decks and siding.
Spar varnish over paint. I am currently using two layers of a water based polyurethane and find the poly and paint pulling off in spots. If you want a clear coat over paint a better choice is spar varnish over oil base paint and. It came as a raw wood door and was stained with a spar varnish by our painting. Always spot test on a hidden area to ensure satisfactory results.
Then the yellowing doesn t stop there it continues to yellow over time making the paint more orange. Can spar varnish be used over paint. Slight ambering may be experienced when helmsman spar urethane is applied over light colored stains or wood surfaces. Lacquer can cause the paint to bubble or crack due to the very hot solvent that is a part of lacquer.
July 1 2019 at 10 23 pm. July 13 2018 at 8 03 pm. With all the modern advances in coatings polyurethane shellac urethane or varnish some confusion about formula is to be expected. Varnish can be used to protect preserve and enhance paint.
If the spar urethane is not suitable over acrylic paint can you recommend something that is. Most professionals agree that water based varnish is the best product to use over paint. A painted exterior sign. Is spar urethane for wood only.