Tips When Painting Pressure
Pressure-painted wood may appear attractive in its homespun look, but you may want to improve its appeal by painting. Nevertheless, can you paint such wood without interfering with its pest resistance capabilities? Also, is it an excellent idea to paint pressure-treated lumber?
You can paint pressure-treated wood if you want to alter its look. Pressure-treated wood needs to dry out prior to painting. Ensure you use primer and paint suitable for exterior use. Also, the timber surface should be clean for the paint to adhere effectively.
There are several other critical insights that you need to get right. Read on for further elaborate hacks of painting pressure-treated timber and how to treat such lumber.
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Is It Better To Paint Or Stain Pressure
It is better to stain pressure-treated wood because a stain will produce better results and last longer than paint because it creates a stronger bond with the wood.
Even after pressure-treated wood has had ample time to dry, the chemicals used to treat the wood will hinder how well the paint bonds to the wood. As a result, the paint will peel and fade, requiring additional coatings every couple of years.
In comparison, stain soaks into the wood grains, creating a tighter bond than paint and, therefore, a longer-lasting finish that requires less maintenance. Stain can also be combined with a sealer to further preserve the finish.
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Now You Know How To Paint Pressure Treated Wood
When you started, you didnt know everything about pressure-treated wood. Who does? You may not have known the process used to create it, but now you do. You may not have known the different types and grades of pressure-treated lumber, but, You do now.
With the knowledge youve gained from someone with over 30 years of experience, you can be confident when deciding how to paint pressure-treated wood and maintain the beauty and value of your home.
Plus, with the instructions on how to paint pressure-treated wood yourself, youll save thousands of dollars too!
You can take that to the bank! Literally.
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How Do You Paint Pressure Treated Wood The Right Way
Treated wood needs more time than untreated lumber to thoroughly dry before it can be painted, and all oil-based paints should be avoided in favor of water-based latex primer and paint.
To properly paint your pressure-treated wood:
Make Sure Your Treated Wood Is Clean Before You Paint

Like with any painting project, you want your surface to be clean and dry before applying any primer and paint, and with pressure treated wood, its more than likely there is going to be some dirt and grime buildup over the two to four months it takes to fully dry. Youll also want to wash off the chemicals that have seeped out onto the surface of the wood while drying before you paint. You might be wondering how to go about doing this, but not to worry its a lot simpler than you think!
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Get Your Supplies Ready
These are the supplies necessary to paint pressure-treated wood:
- Dish soap and water
- Exterior primer made for pressure-treated wood
- Latex exterior paint
- Paint sprayer or roller
- Paintbrush and thin paint pads
Measure your project so you can purchase enough primer for one coat, and enough to apply two coats of the finish color.
How Long To Wait Before You Paint Treated Wood
Lumber and wood are difficult subjects to understand. Since the moisture content in lumber plays a large role in its appearance, use, and care, it can make matters difficult when you work with it.
One of the common questions in regards to lumber is how long before you can paint treated wood?
The simple answer to this question is that it depends. The answer lies in the moisture content. The wood needs to be dry for you to work with.
Multiple factors will make this decision easy for you. Lets get into those first.
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Saves The Forest Resource
Pressure-treated wood is more eco-friendly than standard wood mainly because of its durability. Since the wood can last for decades without replacement, there is a significant reduction in the strain on forests.
The longer the wood remains in good condition, the lesser the need to cut down more trees for lumber.
What Are The Benefits Of Treated Wood
Now that you know theres a right way to answer the question, can you paint pressure treated wood, lets talk about why you should be painting pressure treated the right way to make sure your outdoor projects are pleasing to the eye and long lasting. Here is a brief list of the benefits of using pressure treated wood:
- Moisture, Fungal, Insect Resistance Any natural wood left out in moist or wet environments will soften, allowing bacteria, fungus, and other microorganisms to slowly decompose the wood, however pressure treated wood uses one of several chemical compounds based on copper, which is a natural biocide!
- Cost and Durability You might be thinking, wait, but pressure treated lumber is more expensive than natural wood, and youre not wrong, however if basic math serves us well, one slightly more expensive purchase and professional installation is more cost efficient than purchasing over and over the cheaper alternative that will need to be replaced due to constant assault from the elements.
Now that you know the sweet benefits of using pressure treated wood over natural wood, why would you not want to take care to paint it properly? Using the proper method to apply paint to your pressure treated wood will add another layer of resistance so that you can rest with the peace of mind that your outdoor project will last.
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Types Of Pressure Treatment
Pressure-treated wood is available in an assortment of types. Certain types of pressure are specifically meant to ensure fire retardation. A popular pressure treatment chemical that is used for wood is Copper Azole. This particular chemical is impressive in resisting mold, fungi, and termites. In addition, this chemical is long-lasting.
CCA or Chromated Copper Arsenate is another chemical that is used to form pressure-treated wood. This chemical has been utilized for treating wood for many years. Once the wood has been treated with CCA the timber has a green-like coloring to it. This chemical, much like Copper Azole, will provide you with protection that is long-lasting and will protect you from fungi and insects.
These chemicals can be used for both exterior and interior applications. Certain pressure-treated wood will undergo additional treatment in a kiln, which is called kiln-drying. Through kiln-drying you can drastically decrease the moisture content of the wood, making it significantly easier to work with. Kiln-drying will also prevent moisture-related issues such as warping and bowing.
Types of Pressure-Treated Wood |
To be used for docks and seaside structures |
How Long Does Pressure
Depending on the prevailing conditions, pressure-treated wood can take up to one month for complete drying. Nonetheless, when the weather is good, this should take just about two to three weeks. It would be best if you allowed the pressure-treated wood to dry slowly under natural conditions without attempting to hasten the process.
Typically, wood is always drying, and therefore the preservative will seep out even though this may take time. But what controls the speed of drying?
Well, this will depend on several factors. Primarily, when there is excess heat or exposure to direct sunlight, the wood will dry fast. Nonetheless, such exposure will cause the timber to warp, undoubtedly undesirable as it alters the quality.
On the other hand, you should not dry your wood under wet conditions, especially without access to light. Such conditions will prolong the drying period, and you will have to wait long before painting.
Therefore, you need to create the optimum drying conditions with no direct sunlight, but the aeration is sufficient. You can also opt to shop dry for guaranteed effective drying before painting. This is when you leave the timber in a rack to dry naturally without prompting to hasten the process.
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What Makes Painting Pressure Treated Wood Difficult
Pressure treated wood comes with a variety of advantages. Most notably, it is better for outdoor environments, and it is especially great for construction lumber. Still, pressure treated wood comes with a drawback, and it is that it takes a long time to dry.
Because of the chemicals used in the pressure treatment, this type of wood can take weeks to months to dry. When paint is added too quickly, the paint does not last long, making it prone to chipping or peeling. Other than the painstakingly long drying process, prepping pressure treated wood isnt all that difficult.
What Happens If You Paint Treated Wood Too Soon

What happens if you paint treated wood too soon? Painting treated wood too soon ultimately results in the wood rejecting the paint. The chemicals in the wood have already saturated the wood fibers and therefore there will be no room left for the paint to be absorbed into the wood. Your paint will ultimately bead on the surface and run off the wood surface.
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Can You Paint Pressure Treated Wood
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People often wonder: can you paint pressure treated wood? The answer is, yes, but there are some important things to consider for best results. There are extra steps you need to take that arent necessary with regular lumber.
Pressure treated lumber needs time to dry out completely before its painted. Showing a little patience, then applying the proper paint and primer will be your best chance at a successful and long-lasting outcome.
Painting Guidelines To Keep Your Fence Looking Fresh
Not long ago we shared some best practices for wood fence protection and outlined the steps for proper wood maintenance. Finishing wood before it is exposed to destructive elements for extended lengths of time is perhaps the most important maintenance tip for any wooden structure. If you have a fence, deck, or stairs made with pressure-treated lumber, you might be wondering if you can paint pressure-treated wood to match your design preferences. You can definitely paint pressure-treated wood, though there is a certain process to follow to ensure the paint will last.
When wood is referred to as pressure-treated, it means that it was saturated with certain chemical preservatives that protect it from rot and fungus. The process is done under high pressure to allow the chemicals to penetrate better, leaving the wood rather wet. Thats why its important to exercise patience and allow the wood to dry thoroughly before painting this will help you avoid peeling paint from your treated lumber. Since the chemicals used to pressure-treat wood contain toxic substances, its also important to use proper protectionwear gloves and a dust mask.
Follow these steps when painting pressure-treated wood to get lasting results:
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Painting Treated Lumber: Everything You Need To Know
Some may scorn the idea of painting treated lumber, thinking that this is something that is not safe. However, reality dictates that it is possible to do so. However, there are things that you need to know. For example, in order to achieve a great-looking and long-lasting finish, it is very important to assess the moisture content of lumber first, then ensure that the right paint and primer is also selected. To help you out in this process, this article will provide information on everything that you need to know regarding the process of painting treated wood and lumber.
Ensure Your Surfaces Are Clean
When painting any surface, although especially when painting treated wood, it is of utmost importance that you ensure that the surfaces you will be painting are as clean as possible. Most guides will advise that you clean your board with soapy water, which is good practice, however, if you allow the soap to soak into the wood you will have to wait for it to dry before you can take the next step. A clever way to get around this is to fill a shallow container with a small amount of soapy water and dip a brush into the solution. Simply brush the wood with the soapy solution while being as conservative as possible.
When you are satisfied with the state of your painting surfaces, wipe them down with a dry cloth and allow a few minutes for the board to dry before taking your next step.
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How To Tell If Treated Lumber Is Ready To Be Painted Over
If youre looking for an answer to how long before you can paint treated wood? You need to consider testing the wood first.
A test, dubbed as sprinkle test, will be required to see if you can stain or paint the lumber. This is how it works:
- All you have to do is drop a small amount of water on the lumber.
- If the water beads up on the surface, then it is not ready to be painted over. When water beads up, it means that the lumber has enough water inside. In other words, the moisture content in the wood will prevent the paint from setting in.
- If the water gets absorbed in the surface, then it is ready to be painted over. When water gets absorbed in the wood, it signifies that the wood is ready to absorb exterior content. In other words, it means that the moisture content of the lumber is low enough to accept it.
The test above will help you determine how long before you can paint treated wood.
Can I Use Kilz On Pressure Treated Wood
Best Water-Based Primer KILZ Premium If youre looking for something that dries fast, then this KILZ primer for pressure treated wood will do the job. It is a water-based primer, which allows it to dry fast to touch for you to save time and be able to apply the paint sooner. After one hour, you can already recoat.
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Process Of Pressure Treating Wood
The wood is forced through pressurized chambers filled with the chemical solution to pressure treat wood. This process helps to penetrate the wood fibers evenly without leaving gaps behind.
The solution seeps into all parts of the wood, making it highly effective in protecting against fungal decay and insect infestation. Pressure-treating also increases the water-resistance and durability of wood. This process ensures that the treated wood is safe to use in many applications, such as decking, fencing, landscaping timbers, and poles for outbuildings such as sheds and gazebos.
The most common chemical used on treated lumber is CCA , an arsenic-containing pesticide used to pressure treat the wood.
Other chemicals include ACQ or copper azole, becoming more popular than CCA. Other chemicals used include Alkaline Copper Quat , Copper Azole , Micronized Copper Quat , and Oil-Based Alkaline Copper Quat .
Apply The Paint Coats

Before commencing this step, you should first allow the primer to dry. This takes a short time, and a day should be sufficient. Once it is dried, apply the paint coat of your favorite color. Refrain from using oil-based paints when dealing with pressure-treated wood. They are incompatible with such surfaces.
Instead, use latex paints. After applying the first coat, allow it to dry before applying the second. Make sure that you apply thin layers as they dry easily.
If you are painting on outdoor-based surfaces, it is noteworthy that the coat will wear out faster on horizontal surfaces than on vertical ones. It means that a surface such as a fence will retain the paint coat longer than a deck.
Thus, it would be imperative for outdoor horizontal surfaces to stain the pressure-treated lumber rather than paint it. Alternatively, you can allow the paint coat to fade then apply a sealant to regain the vibrancy. The sealant option will be cheaper than painting the surfaces once again.
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How To Paint Pressure
Pressure-treated wood needs time to dry out before its painted, which takes a lot longer than kiln-dried lumber. If you just purchased it from the hardware store, chances are its still too wet to paint. If water beads up on the surface, it needs time to dry. Pressure-treated lumber can take weeks or even months to dry. Once the wood absorbs water on the surface, its ready for paint.
Its important to use the correct type of paint and primer on pressure-treated wood. Our experts recommend priming with a latex primer and a compatible exterior latex paint, also known as water-based paint. We recommend you avoid oil-based paint.
Can You Spray Paint Pressure Treated Wood
Yes, you can spray paint pressure treated wood. Although the options are open, its advisable to brush to force the paint into hidden parts. You also have control over how much is going where if you are hand brushing. Just remember to analyze the amount of moisture to achieve a glossy and smooth finish.
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