With newly installed treated lumber, it is necessary to wait an adequate period of time for the wood to season or dry out prior to staining it with TWP. New wood sometimes referred to as “green” wood, has a very high moisture content when it is new. Staining wood in this condition would trap moisture under the stain and potentially lead to mold, mildew, and wood decay issues. This can mean premature future costly repairs and replacement of the wood so it is best to wait. The seasoning time frame can be around 4-12 months give or take depending on the climate, weather and sun exposure.
To avoid having to wait months to stain your new wood you can use KDAT wood instead. KDAT (kiln dried after treatment) is wood that is dried in a kiln after it has been treated with the proper bug deterring chemicals. The wood is then put on the market and sold. It is slightly more expensive than regularly treated wood but it may be worth not having to wait as long to stain it. The wait time for staining new KDAT wood with TWP is about one month. This cuts down significantly on the wait time and may be the right option for you. Continue Reading