Know When to Stain and Seal Your New Treated Lumber Deck
Stain or seal dry wood - the time it takes for wood to dry out depends on the climate and the wood’s exposure to the sun. During the summer, pressured-treated lumber can dry in a few days in full sun. In cool, damp weather or when shaded by a roof or tree, it will take much longer for wood to dry.
In some cases ProWood pressure-treated lumber has water repellent applied during the pressure-treating process. Make sure to read and understand the tag that's stapled to the end of your lumber to determine whether a factory-applied water repellent has been added. The information on the treated lumber tag will help you understand when to apply a topical wood sealer.
Use the water test to see if it’s time to seal (or re-seal) a treated wood deck. Drizzle water onto the wood. If the water beads, the wood is still sealed and protected. If the water is absorbed into the wood immediately, it’s time to apply a sealer. Test a few different areas of a deck, fence or wood project. Note: High-traffic spots on a wood deck are likely to wear down before corners and railing balusters.
Seal Kiln-Dried Decking - In many areas you can buy ProWood KDAT (Kiln-Dried After Treatment). With KDAT lumber, moisture is removed from the wood before it's shipped to a lumberyard. All ProWood KDAT lumber decking is marked on each piece with an end tag or an ink stamp. It is recommended that you seal KDAT lumber immediately unless it has been pressure-treated with a water repellent additive.
Don't want to stain your old lumber? Ask your local lumberyard about ProWood Dura Color — then build something new!