Asked by: Daya Atrari
asked in category: General Last Updated: 4th June, 2020

Can I use polyurethane on pressure treated wood?

It's a great idea to apply at least 2 coats of polyurethane to the wood. The treated lumber needs to be dried out slightly if you are applying polyurethane without staining it first, otherwise, you can just go ahead and sand the treated lumber. Even if you stained the lumber, you will still want to sand it slightly.

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Hereof, how long do you have to wait to seal pressure treated wood?

It is important to wait for the wood to dry before sealing a new deck, but at the same time, you don't want to wait too long. Drying can take several months. We recommend beginning to test the wood around 90 days after your project is completed, but this is just a general suggestion.

Subsequently, question is, can you use polyurethane on decks? A protective polyurethane topcoat is a great way to seal your wooden deck and increase its longevity. Even if you decide not to stain your deck, you should always apply some kind of sealer to keep it protected from the elements. Keep wooden decks protected with polyurethane.

Consequently, what is the best sealer for pressure treated wood?

Here are some of the best deck sealers on the market:

  • Thompsons Waterseal Advanced Natural Wood Protector.
  • ECO-SAFE Wood Treatment – Stain & Preservation by Tall Earth.
  • Rust-Oleum Coppercoat Wood Preservative.
  • CabotStain Australian Timber Oil Penetrating Oil.
  • Thompsons Waterseal – Transparent Stain.

Do you need to seal cut pressure treated wood?

Use Cut-N-Seal® on areas that have been drilled or saw cut in treated wood deck boards, railing, post tops, fence boards, etc. Cut-N-Seal is not recommended to replace pressure treatment. Do not use to recoat pressure treated wood surfaces.

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