Best TWP Stain for Pressure Treated Pine

by TWP Help

Last Updated on January 15, 2021 by TWP Help

Best TWP Stain for Pressure Treated Pine Decking and Fences – Tips

Pressure-treated pine is probably the most commonly used lumber for most exterior wood projects like decks and fences. It is fairly reasonably priced and widely available. The chemical treatment is to deter insects but is not a protective treating against weather. Pressure-treated pine should be sealed or stained for optimal life expectancy.

TWP Stain Pressure Treated Pine

The best TWP Stain for pressure-treated pine is the 100 Series original formula. This is an EPA registered wood preservative that contains 30 – 40% solids to help block out harmful UV rays and moisture. The 100 Series Stain is available in 6 different colors that enhance the natural beauty of the wood while providing excellent protection.

The TWP 100 Series formula is not prone to mold or mildew, which can lead to wood rot and decay. It dives deep into the wood pores and dries within 2-6 hours of application. This user-friendly formula does contain higher levels of VOC and is not available in all states. Check your location’s availability prior to ordering.

The best TWP stain for pressure treated pine where the 100 Series is not available is TWP 1500 Series. This low VOC blend is compliant in all 50 states. Also, an EPA registered wood preservative, TWP 1500 penetrates pressure treated pine for optimal weather shielding and enhanced beauty. It contains its own mildewcides that help eradicate mold and mildew growth.

Either stain, the 100 or 1500 Series is the best TWP stain for pressure treated pine decks, fences, or other exterior surfaces. Depending on the wood’s porosity, TWP can be applied in 1 or 2 coats. If 2 coats are necessary it is best applied “wet on wet” to ensure maximum absorption and an even finish. The TWP stain is easy to apply and maintain. It will ensure your pressure treated pine surfaces hold their beauty and last for many years to come.

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Rick Durkin
Rick Durkin
9 months ago

I have used the TWP 100 on a cedar pergola and porch ceilings …great. Am considering a 4 board horse fence project and am CONSIDERING TWP clear as a SEALER and water proofing application .. and then will prime and paint with a quality latex white semi gloss paint. Goal is to SEAL the wood, minimize checking / splitting / warping. Will be pre drilling pilot holes in boards .. and not putting screws too close to the edges. Prefer the 1500 for low VOC as the 100 was nasty (for me) to use in an enclosed garage to prep everything prior to install. Will the 1500 serve as a quality sealant? Thanks.

Jeff Fischer
Jeff Fischer
10 months ago

I have a new pressure treated pine deck that is 1 year old and has never been stained, what prep do I need to do? Also what will the best semi transparent stain to use?

1 year ago

I have a 18×30 Pergola (made with Pressure treated pine). Its approx. 10 year old and never appeared to be stained. My plan is to place a roof over it and stain the wood. I cleaned the wood and its ready to stain. I was looking at the Dark OAK. My question is what type of Stain should I use TWP 100 or 1500. ( I live in near Detroit MI) and why?
TWP 100 seems to penetrate deeper but the 1500 has more Volume solids and coverage per Gallon. Is the 1500 an improved formula over the 100? is the 1500 better for 4 season climates? I saw the comparison review but that didn’t really answer my questions.


6 years ago

I moved into a house with a rather large deck. Last owner (just before selling the house) painted it with paint (some HD brand) which was not even meant for deck. It was just exterior wood paint meant for railings. Paint is peeling over all over the place and is an ugly mess.
Deck is made of pressure treated pine and is largely in good shape (15 year old deck). I have already sanding the deck and mid way through. After heavy sanding with 50 grit (belt) sander the wood is coming out nice and clean.

What are the next recommended steps after sanding to stain it with TWP 100. How many coats are recommended


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