How to Paint Plywood

Whether you're painting plywood for artistic purposes or using it as a floor surface, the task can be completed with a few key tips. Painting plywood is much like painting any wood type. You'll need the right tools, properly prepare the surface for adhesion, and apply the paint using the correct technique to achieve a smooth, durable finish.

Purchase paint and primer. When selecting paint and primer, consider the intended use of the surface. Is the plywood being used for art? Or is it for a floor? Choosing the right paint and primer based on the project’s end goal will ensure the longevity of the final result.

• If you're painting plywood for art, consider buying acrylic paint and primer. This water-based paint is designed for artists and is ideal for creating detailed, beautiful images on wood.
• If you're painting plywood to be used as an interior surface like a floor, you'll need a more durable paint. Choose either latex acrylic paint or oil-based paint designed for such purposes.
• If you have a small project and need a smooth finish, spray paint is a great option.

Choose between a paintbrush or a paint roller. For a high-quality plywood painting job, it’s best to purchase either a paintbrush or a paint roller. These tools are available at hardware or home improvement stores. Choose a brush or roller designed for flat surfaces, suitable for the type of paint and primer you have purchased.

• If you're using spray paint, no brush or roller is needed.
• The tool you choose depends on your project. For larger areas, a roller is more efficient as it allows faster coverage. For detailed painting, a paintbrush is often better than a roller.
• For certain projects, you might need both a brush and a roller. The roller covers larger sections, while the brush handles corners and edges.

Consider using a paint sprayer for large projects. If you need to paint a large area, such as room walls, a paint sprayer is a great option. You can rent or purchase one from hardware or home improvement stores, and it will come with a user manual.

• When using a paint sprayer, it’s crucial to mask off areas that shouldn’t be painted.

Buy sandpaper. Sanding the plywood surface before painting is essential. This process will smooth out any imperfections and ensure a smooth finish. Opt for fine-grit sandpaper such as 220 or 180. For rougher plywood surfaces, use 80 or 100-grit sandpaper.

• Sandpaper is available at all hardware and home improvement stores.

Prepare the right sanding tools. You can sand plywood by hand or with an electric sander, such as an orbital sander. If the plywood is small, hand sanding is sufficient. For larger surfaces, an electric sander is recommended.

• If you’re working on a large area, like a wooden floor, consider using an industrial sander. Renting one is often the most practical solution for big jobs.

Consider using wood filler if necessary. If your plywood has surface defects that can’t be smoothed by sanding, you’ll need wood filler to fill in the holes. This pliable substance is pressed into the holes with a putty knife, then sanded smooth once it dries. Choose a filler that’s suitable for painted surfaces, although most wood fillers work for painting.

• Since you’ll be painting the plywood, any discoloration caused by the filler won’t affect the final result. However, avoid using filler on unpainted plywood as the filler’s color may stand out.

Mask off or cover areas you don't want to paint or get dust on. When painting plywood indoors, make sure to cover the areas you don't want to get paint or dust on. Use a combination of tape, plastic sheeting, and fabric to protect the area surrounding your project.

• For example, use plastic sheeting to cover areas that might get paint overspray if you are using a paint sprayer.
• For small areas that could accidentally get paint, use tape to mask them off.

Fill in any holes. Before sanding the plywood, fill any holes that could cause imperfections in the surface. Look for larger visible holes, but also feel the surface to locate smaller holes that need filling. These may not be noticeable on the unsanded wood surface but will become obvious once the plywood is painted.

• Follow the instructions on the wood filler packaging. Typically, manufacturers recommend using a putty knife to apply the filler and waiting for it to dry before sanding smooth.
• In some cases, you may not need to fill the holes or imperfections in the plywood. If you don’t mind a less smooth finish, you can skip this step. The paint will still stick well to the imperfect areas, but the final result will not be smooth.

Sanding plywood. To achieve a smooth surface after painting, sanding is essential before you start painting. Begin with coarse sandpaper, such as 100-grit, if the plywood surface is rough. This step will help remove major imperfections. Then, use finer sandpapers like 180 or 220 grit for a smooth finish. If the plywood is already relatively flat, you can start with finer sandpaper.

• Because plywood is made up of multiple layers of pressed wood, there’s a risk of sanding too aggressively or for too long, which could go through the layers beneath. Therefore, be cautious when sanding plywood.
• If you don’t care about achieving a perfectly smooth surface, you can skip the fine sanding step, and your plywood will still hold the paint well, though it won’t be as smooth.

Clean the dust off the surface. After sanding, you'll find a layer of wood dust on the plywood. It's important to clean off the dust to ensure the paint adheres properly. If there is a lot of dust, use a vacuum cleaner to remove it. Then, wipe the surface with a dry cloth to remove any remaining dust particles.

• Home improvement or paint supply stores offer special dust cloths that can remove fine dust particles.

Apply primer to the edges. If you're painting a floor or any other surface that requires careful attention to the edges, use a brush to work on these areas. A brush gives you more control and precision compared to a roller or sprayer.

• The edges of the plywood can be painted with a brush, but it's advisable to tape off the edges first to ensure clean lines and prevent splattering. Keep the tape on after the primer coat to use for the finishing coat.
• Paint a 7-10cm wide border along the edges of the plywood. This width will make it easier to paint the rest of the surface with a roller or sprayer.

Apply primer in overlapping strips. The primer helps seal the plywood surface and ensures the final paint adheres better. Make sure to coat the entire surface with primer and cover all areas.

• The best way to ensure full coverage, regardless of your painting tool, is to apply primer in even, overlapping strips. Essentially, you’ll paint in a 'W' pattern using a brush, sprayer, or roller so the strips of paint overlap. This technique helps to evenly distribute the paint, especially at the edges where paint tends to accumulate.
• Always follow the instructions on the primer packaging. The manufacturer will typically provide information on the ideal temperature for application and drying time between coats.

Start the finishing coat. Just like with the primer, you should begin by painting the edges of the plywood with a brush before tackling the larger areas. Work slowly and carefully on the edges, then use a brush, roller, or sprayer for the remaining surface.

Apply the first thin coat of paint. Once the primer has completely dried, you can apply the first coat of paint. Similar to the primer, you should apply a thin, even coat over the entire surface.

• When applying the first coat, don't worry about the primer being visible beneath. This is just the first layer, and multiple thin coats are better than one thick one, even if you can still see the primer underneath initially.

Sanding between coats of paint. Lightly sanding between coats of paint will help create a smoother final finish. Use a fresh sheet of sandpaper with 180 or 220 grit and gently sand the entire surface after the paint has completely dried. Sanding will help remove any imperfections that occur during the painting process.

• After sanding between coats, wipe off the dust from the surface. Use a dry cloth or a vacuum to clean the area.

Apply subsequent coats. For the smoothest final surface, it's better to apply several thin layers. This is especially true for surfaces that will endure heavy abrasion, such as floors.

• Make sure to wait for the paint to dry completely before applying the next layer. Refer to the instructions on the packaging for the drying time, and check by touching an inconspicuous area to see if it's dry after the recommended waiting time. This method will result in a harder and smoother finish.
• Applying multiple thin coats allows each layer to harden and dry more effectively, while thick coats tend to remain somewhat soft even after drying time.