When You’re Good to Paint Pressure Treated Wood- Lessons from a Painting Professional

If you’ve been following along with our backyard renovations and deck rebuild, then you may know that we have switched our plans around quite a bit throughout these renovations. I had a vision of the look I wanted, but after consulting with professional arborists, contractors and our painter, we have changed a few things around. Originally, when we planned to redo our backyard deck, we wanted to put concrete down in place of the old deck that we had. I liked the idea of the smooth light gray and planned to accent it with natural cedar. When all was said and done, we decided concrete wouldn’t work for us and we decided to do a new deck instead. We still plan to accent with cedar although we’re not building our entire deck out of cedar. And because mixed wood tones is a huge pet peeve of mine, I want to paint our deck.

In the midst of our renovations, I stayed in touch with our painter since he was giving us a discount on the exterior painting of our house if we did it after the back deck was removed (and before the new one was built). As I was explaining our plans to him, he gave me some helpful advice that I would have otherwise not known.

You shouldn’t paint fresh pressure treated wood
When we decided to go with wood decking over composite (mainly because of the price) we knew we were committing to keeping our deck well maintained and protected from the elements. I immediately started looking for wood sealers and options for protecting the wood. I knew I didn’t want a stain. I wanted an opaque light gray finish so that the cedar beams would stand out, but according to our painter: You can stain wood right away with an oil based stain, but you shouldn’t paint or seal new pressure treated wood right away because it needs time to cure and dry out before you seal it up. If you paint it without letting it dry, the paint will not last.


Photo Credit: The Feathered Tumblr

Our painter explained that a sealer locks the chemicals and moisture inside and eventually those same chemicals and moisture will eat through the fresh paint and it will begin to chip and peel and bubble. The green-ish hues in the new pressure treated wood are an indication that it has a higher moisture content.

How long do I have to wait before I can paint my wood deck?
After the wood has had a chance to dry. In Florida, this would typically take 1 or 2 seasons. Since we are finishing our deck in late Spring, we will likely paint our deck sometime mid to late Fall. In other extremely dry parts of the world, wood can dry out and be ready for paint in as little as just 2 weeks.

if I can’t paint or seal the wood right away, what do I do to protect my new deck from the elements in the interim?
Nothing. Your wood is pressure treated, and that will keep your wood from rotting while you give it some time to dry a bit. If you wait too long to seal the wood, it will eventually start to go bad, but just a season or 2 won’t hurt it.

How do I know my wood is ready for paint?
You can determine if your deck is ready to be painted by sprinkling some water on your deck. If water beads up then the boards are still too moist to paint or seal. If the water soaks right in, then your deck is dry enough for paint.

Photo: Today’s Homeowner with Danny Lipford

Thanks to our amazing painter, Sam Rios for always doing quality work at great prices and for sharing your experience and wisdom with a couple young, newbie home-renovators. If you’re local and looking for a painter, we know a guy!