Polyurethane over acrylic sealer

Can I use spar urethane over acrylic sealer to make can more durable for outside use?

Hello and thanks for your question... Cheryl here with an answer.

I know that Spar Urethane is oil based. My concern would be that it would yellow over time. If the item will be outdoors seasonally, I'd suggest using a non-yellowing exterior varnish with UV protection.

Comments for Polyurethane over acrylic sealer

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Apr 13, 2025

Water based spar urethane
by: Nancy Fancy Pants

I use a water-based spar urethane on my front door. It is a wooden door with fleur-de-lis carved into it. My friend painted the fleur-de-lis in various colors. We protect it with the water-based spar urethane. Works really well. I used a satin finish one.

May 07, 2025

Water based spar urethane
by: Cheryl

Great! Thanks for sharing this tip. I'd love to see a photo of your door. Sounds amazing!

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AUTHOR BIO

Cheryl Poulin, CPC, has been helping decorative painters of all levels grow their acrylic painting skills since 1993. She has taught thousands of students, published 50+ instructional packets and videos, and helped revive interest in the decorative art form with a beginner painting program using her step-by-step Earmark Studio Method.

Cheryl’s work has appeared in publications such as: The Decorative Painter, PaintWorks, and Tole World. Cheryl provides your-decorative-painting-resource.com as a free resource. She’s happiest when she sees her students succeed. Cheryl relaxes with a brush in hand, painting, doodling, and creating.