Treated lumber is covered and is often injected with all kinds of chemicals which are aimed at preserving the wood. The purpose of treated lumber is to be able to build things that can stand the test of time. Treated lumber fends off warping while subjected to the elements such as rain, snow, extreme heat or extreme cold. Treated lumber is also resilient against mold and insects. These qualities make treated lumber the high-end choice for homes, outdoor furniture, decks, boat docks and fences. This wood can last for over 40 years if properly maintained.
Painting and staining treated lumber is a laborious task as the wood, due to the treatment process, has a lot of moisture. This moisture prevents stains and paints from adhering to it but have no fear because the following article will explain how to stain treated lumber.
Step 1 - Drying Process
Pretty much every product you wish to add to treated lumber will hate moisture. This includes, but is not limited to, glue and stain. In order to get a good adhesion the lumber has to have this moisture removed. You need to have a place that is very dry. You can utilize a dehumidifier to help remove the moisture from the air. Place lumber into this room and wait several days to allow the drying process to take place. Over the course of the next three days remove the lumber and place it outside under direct sunlight during the hottest part of the day. You can also aid the drying by using a hairdryer on its highest setting and using it close to the wood. Move the hairdryer slowly from end to end. By the time the three days are up the moisture will have been removed.
Step 2 - Prepare the Lumber for Staining
To get the stain to adhere, the surface needs to be rough and this is achieved by sanding. Sand the surface of the lumber with the sandpaper. Do not neglect either side or the edges of the lumber. The wood will still feel smooth but the finish will have been worn. This allows the stain to flow into the pores of the wood. After you're done sanding use a tack cloth to remove the dust.
Step 3 - Staining
Place the wood on your work area and open the can of stain. Under most circumstances you could apply the stain with a foam brush but using a rag is more effective due to the treatment. Pour some of the stain directly onto the wood and use your rag to rub it into the grain and to spread it out. Continuously add stain to the wood to prevent streaking and drying out. Continue in this manner until the entire piece of wood is stained. Add another coat of stain right after the first coat. At this point you are done staining and you can add two coats of sealant.