First, consider the type of pressure-treated lumber you plan to use. Premium pressure-treated lumber has been dried after pressure treatment to remove excess moisture. Wood like this can be stained as soon as you're done putting your structure together whether it's something big like a deck or tree house , or something smaller like a bird feeder.
Other good but pricey options include cedar and redwood, especially for big structures such as decks. If you buy ordinary pressure-treated lumber from a home center, however, you'll have to wait anywhere from two to three days for the wood to dry sufficiently before you can apply a water-based semitransparent protective stain. To test whether the surface of your lumber is sufficiently dry, dribble a few drops of clean water on it. If the water beads up immediately instead of being absorbed, you need to wait a little longer.
But don't wait too long. Every day that the exposed wood has no coating on it, ultraviolet light can degrade the cell structure of the surface wood fibers.
This reduces the effectiveness of any stain or preservative that you apply. The other major factor is the type of finish you use. Some manufacturers may want you to thoroughly wash the surface with wood cleaner first, to remove surface dirt and open the wood pores.
We know the feeling when you just built your own fence or hired a contractor to build it. How long should you wait before you can stain it. There are a couple of different types of pressure treated wood that you can get. Based on which one you get will determine how long to wait before staining the wood.
With wet pressure treated wood, preservatives are impregnated into the lumber via high pressure to protect deep inside the piece of lumber. This is the greenish lumber that you see at the store and is still damp to touch when you pick it up. If you get the wet pressure treated wood and live in a low humidity area, then you can probably wait weeks and then stain your wooden fence.
Due to how wet it is, it takes almost 6 months to completely dry, especially the 4x4s that have moisture deep inside. Kiln dried pressure treated lumber is treated the same but then kiln dried afterwards. The kiln dried process helps with the checking and warping that happens with wet pressure treated wood. If the water beads up, the wood is too wet and you need to wait before applying a finish.
Also did you know that pressure treating your wood can last for many years? Stain has to penetrate into the wood to be effective which is why dry wood is essential for that penetration.
Before you put on that first coat of stain, make sure you have read the directions and you know what is going to be expected at each stage. As for actually staining, select your tool of choice. People have used paint rollers or garden sprayers for a quick and efficient application.
No matter what you choose, make sure to always have a paint brush nearby. The small nooks and crannies that a project can hide will make it hard to reach with larger tools. With a paint brush, you can pay special attention to each unique area that your wood has. A small tip before starting is to choose your exit route. Mark where you will be able to quickly exit the working area after staining and work towards that area.
In doing this, you will not be walking over your hard work while its curing. After the stain has been applied, you simply have to wait for it to cure.
Keep traffic on the wood to an absolute minimum and avoid putting furniture on it until it is completely dry. Pressure-treated wood can turn gray after long exposure to the elements.
Similarly, if it gets rained on and allowed to dry over and over without protection that can lead to it drying out and cracking. The staining process protects against both of these problems by reflecting the UV rays and by serving as a barrier to the rain.
Once the wood has been exposed to the elements to the point where it cracks and discolors, there is only a couple of things you can do. With the damage that the wood has sustained, a transparent stain is not going to come out perfectly.
The discoloration and gray color will still show through and will not solve your problem. The best bet if you have old and weathered wood is to stain it with a semi-transparent or darker color stain. This will cover up much of the damage and will help protect the wood from further damage. If you stained your lumber too soon and the stain did not take, then all is not lost.
If you stained with a lighter color, it is easy enough to simply wait until the wood is completely dry and then reapply a darker stain. This is why it is recommended to start with a light stain! If you stained dark and it did not turn out the way you want to, then you will have to remove the upper layer of stain.
Using light sandpaper, chemical stain stripper, or even fully refinishing the wood are steps that you may have to take in order to get it ready for your next attempt. However, about 3 years ago, I tried a different brand. It takes a lot to impress me, and this one won me over quickly.
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