When considering painting wet wood, it’s usually recommended to let it dry completely to guarantee the best results.
Unfortunately, bad weather and busy schedules can make it impractical to let the wood dry fully before painting it. So, can you paint wet wood? Read along to find out why it’s not always a good idea to paint the wood before it dries.
If you don’t have the luxury of time, this guide will also teach you how to navigate the risks involved and paint damp wood correctly.
Can You Paint Wet Wood?
Yes, you can paint wet wood. However, the type of paint you choose for painting over wet wood will make or break your project. In this case, you want to use latex paint specifically. It bonds well with damp wood because it’s water-based. Still, you shouldn’t always paint damp wood simply because you can. Painting wet wood is a delicate process with a few risks and requires a great deal of care to be successful.
Why You Should not Paint Wet Wood
Painting damp wood can be challenging because the excess moisture can cause the wood to warp and the paint not to hold. Even when you use water-based latex paint compatible with damp wood, the wood still needs to dry to an acceptable moisture content level.
How much moisture should be on the wood when you apply the paint? The answer to this question may vary based on the wood and paint type. This presents a challenge when determining how much moisture to work with. You could leave more moisture on the wood, leading to a weaker bond.
Some of the wood fibers absorb water when the wood is damp. As a result, the wood has fewer fibers left to absorb and bond with the paint.
The paint could peel away prematurely
If you work with damp wood, chances are, your paint job will be sloppy regardless of how skilled you are. Eventually, the finish will chip quickly when dry since the paint coat sits on the surface without adequately bonding.
Too much moisture on the wood can thin your latex paint
It’s essential to dry the wood even if you use latex paint. This is because moisture in the wood can mix with the paint and thin it in the process. The result will be a runny, dripping paint that causes poor coverage.
When the paint dries, it’ll appear washed-out and unappealing, not the kind of finish you may look forward to.
The interaction and mixing of the paint with moisture in the wood can also cause unsightly bubbles. Again, these will affect the final product.
Painting wet wood increases the chances of rot
The layer of paint creates a waterproof seal around the damp wood. The water trapped inside the wood can’t leave through the watertight paint coat. Over time, and with frequent temperature changes, the wood may rot and deteriorate.
The water’s constant expansion and contraction inside the wood can also cause cracks and warping, causing the paint to chip and warp.
How to Tell if the Wood is Dry Enough to Paint
It can be challenging to gauge the dryness of wood just by eyeballing it to know if it’s paintable or not. The exterior can sometimes appear dry when the wood has lots of moisture beneath the surface.
If you want to avoid the risks associated with painting damp wood, you can use one of two available ways of testing the dryness of the wood.
Recommended Reading: Does chalk paint come off with water?
The first test is straightforward and costs nothing to carry out. So here’s how to tell if wood is dry enough to paint.
First, wood is dry enough to paint if the wood can absorb water. Sprinkle some water on the wood you want to paint and observe if it absorbs the water or not. The wood is completely dry and ready for painting if it absorbs the water. However, water beads on the surface indicate a high moisture content and the need for further drying before painting.
You can use this test on any wood type, including pressure-treated wood and MDF.
Using a moisture meter
A splash test will give a general idea of whether a piece is saturated with moisture or not. However, if you want something more specific or scientific, a moisture meter should be your best bet.
The tools are affordable and easy to use. They will show you the exact amount of moisture in your wood in percentage content.
To use one of these, press the prongs into the wood, then push a button to display the moisture content readings.
Most paints will require a maximum of 16-percent moisture content to work. This means any reading above that figure may be too saturated for most paints.
How Long Should You Let Wood Dry Before Painting it?
There’s no specific timeline for drying wood before painting it. However, ambient temperatures, high humidity, wood type, size, and cut can influence and determine how long you must wait before painting.
Wood can take anywhere from three days to one month to dry and prepare for painting. Softwoods may dry quicker than hardwoods. So do thinner pieces than bigger logs with much distance for the escaping moisture to cover.
How to Paint Wet Wood
If the weather or other circumstances cannot allow for natural drying before you can paint your wood, following the correct procedure will ensure the best results.
This section provides a step-by-step procedure for painting damp wood. But first, here are the supplies you will need:
- A bunch of paper towels
- Electric fan
- Moisture meter
- Latex paint
- High-quality paintbrush
- The wood to paint
Once you have everything in hand, follow these simple steps to complete the task.
Step 1: Remove as much moisture from the wood as possible
You want to ensure as little water as possible is left on the wood surface to avoid runs and a washed-out look. So, use paper towels to dry the surface as thoroughly as possible. This step is essential for a piece that’s dry to the touch.
Step 2: Use an electric fan to accelerate the drying
Next, you want to speed up the drying time within your project timeline. You can make this happen by switching on an electric fan and training it on the wood for as much time as possible.
The fan will blow away any moisture on the wood and accelerate its drying process. Unlike waiting for days for the wood to lose moisture naturally, this accelerated process should only take a few hours or minutes.
Step 3: Check the moisture content of wood before Painting
Your moisture meter should come with a user manual indicating the right way to use it. Nonetheless, the procedure is straightforward and should apply to any brand or model you buy.
Usually, this involves pressing the prongs into the wood then pushing a button to display the moisture content readings.
Once you have the readings, turn off the fan and prepare the paint for use. You can choose to lightly sand the wood lightly or not, depending on its surface texture.
Step 4: Apply the first coat of paint
Start by opening and stirring the water-based paint with a suitable rod to mix it. Then, dip a high-quality paintbrush into the paint and use it to paint your project in gentle, even strokes.
Ensure you apply a uniform, even coat to the entire wood surface using a high-quality paintbrush or foam brush.
Step 5: Apply the second coat of paint
You want to allow the first coat to dry completely before adding the second coat. The instructions on the paint container should guide you on how much time to wait between coats.
Once the first coat is dry, apply the second coat the same way.
Step 6: Clean up
The final step is a no-brainer—cleaning your tools, including the stiff brush and the area around your project. Consider doing the cleaning while your painted wood dries.
What is the Best Paint to Use on Wet Wood?
Ideally, water and oil do not mix, so water-based paints are the best choice for wet wood. However, you cannot use oil-based and enamel paints on damp wood. The moisture in the wood will repel the paint, leading to premature peeling or bubbling despite how well you follow the recommended procedure.
The water-based paint will naturally blend with the moisture-laden wood fibers, creating some bonding. This bonding will ensure the paint coat adheres and stays on the painted surface.
Since any water in the wood will mix with the paint, consider using unthinned paint to get the best results. Otherwise, you can end up with a washed-out look.
What Happens if You Paint on Wet Wood?
Your paint job can end up with unsightly bubbles if you paint wet wood. The bubbles result from the paint mixing with the moisture in the painted wood. Since paint surfaces are watertight, they can lock in the moisture in the wood, likely causing it to rot.
Can you Paint Wet Wood with Latex Paint?
Yes, latex paint is the recommended type of paint to use on wet wood because it’s water-based. The paint will bond with the moisture on the damp wood to form the bonding necessary for the paint to adhere to the surface.
Recommended Reading: Best paint for trim and baseboards
How to Dry Wet Wood Before Painting
You can always use paper towels to remove any excess moisture on the surface of the wood before painting it. You can also dry wood with a hairdryer on low heat for some minutes to prepare the wood for painting. These steps are intended to get the damp wood as dry as possible before applying paint to it.
Can You Paint Wet Treated Wood?
Yes, you can paint wet pressure-treated wood using water-based latex paint just like you would paint any wet wood.
So, Can You Paint Damp Wood?
Painting damp wood is always discouraged, but it’s entirely possible with water-based paint. Start by removing any excess moisture on the wood surface using paper towels, then dry the wood further with an electric fan or hairdryer on a low heat setting.
Once the wood is dry enough to the touch, proceed to apply two coats of your chosen latex primers and let it dry.