do I have to prime over wood filler?

Painting over wood filler can be a tricky process, but if you do it right, it won’t look like Bondo-Ville. To paint over wood filler, you’ll need primer and paint that’s the same type and color as your walls.

If the wood needs to be stronger than just painted or stained, try using hardwood plywood instead of solid wood.

Does wood filler go before primer?

Yes! Primer is a must when working with wood filler. This is because wood fillers are porous, meaning that the paint will not adhere to them properly without primer.

The other major reason for priming your wood filler is that it helps seal and prepare the surface for painting.

If you have any questions about whether or not you need to prime over wood filler, feel free to contact us. We’re here to help!

Do you have to paint wood filler?

Yes, you can paint wood filler. Wood filler is a composite material that’s made from sawdust, glue, and water.

As such, it doesn’t have any stiffness of its own; it needs to be reinforced with something else before it can be painted or stained.

To prepare your wood filler for painting, mix some additional hardener into the pot and use an old brush or putty knife to spread it over the surface of your patching job.

Apply enough coats so that no rough patches remain visible through the first layer of paint—but don’t worry if this takes more than one coat!

Why is my wood filler showing through paint?

  • If your wood filler is showing through your paint, it’s likely that you have not sanded enough.
  • The wood filler may not be dry enough, or it might have been mixed too dry.
  • It could also be that the wood filler was simply the wrong type for the job, so always check with your local hardware store before buying a product to make sure it’s suitable for whatever task you need to perform.
  • Finally, if you didn’t apply it properly then there will be obvious reasons why this would happen – such as a poor application method or incorrect tools being used.

How do you use a wood filler before painting?

To begin, use a putty knife to apply wood filler to the surface. Apply it in thin layers, letting each layer dry before applying another.

After each layer is dry, smooth the surface with a damp sponge and lets it dry for 24 hours before painting.

Do you sand before or after wood filler?

Sanding before: If you’re going to sand, you should sand before—that way the wood filler will be easier to sand.

Sanding after: If you do decide to sand after, make sure that the filler is dry. Dryers in modern homes use heat, which can cause the wood filler to expand and crack if it’s not completely dry.

Don’t sand at all: A lot of people don’t even bother with this step because it seems unnecessary, but if you want your project to look flawless then there’s no reason not to take care of these details ahead of time and make sure everything’s perfect before moving on!

How long after wood filler can you paint?

If you’re using a water-based filler, allow the filler to dry for at least 24 hours. If you’re using an oil-based filler, let it cure for a full week before sanding and painting over it.

The longer you wait between applying the wood filler and painting, the better your results will be when painting over it.

The more time that passes between those two steps, the more paint soaks into that area and creates a stronger bond between that layer of paint and what’s underneath. This prevents cracks from forming in your new coat of paint later down the road!

As far as open vs closed cell foam fillers go – both are absolutely fine to use on their own or together as long as they’re applied correctly with an appropriate adhesive (such as Liquid Nails).

How do you cover wood filler?

Now that you know you need to prime over wood filler, you’ll need to figure out what primer will work best.

Primers are designed for different purposes—some are meant for use with bare wood, others for covering stains, and other paints.

If in doubt about which primer will work best, read the label on your paint can before buying it. You should also check with a local hardware store or home improvement center to see if they have any recommendations based on what they’re selling most often at their location.

If possible, choose a paint that is compatible with the type of wood filler you used and has an enamel finish (to give your piece extra protection).

Can you paint over Bondo wood filler?

Bondo is a brand of polyurethane, which is not painting. Bondo is not wood filler. Bondo is not a primer; it’s a thick protective coat for your project!

The only way to know for sure if the Bondo can be painted over would be to try it out yourself, but in my opinion I would say that you should probably just use some primer before painting over the Bondo with regular latex paint or other water-based paints.


It’s a good idea to prime over wood filler. You will get better results when painting over the finished project if you prime first.

The primer will help seal up any cracks or holes that are left behind by the filler and also protect against future damage from moisture or other types of stains such as water marks from rain or snow melt off your roofline areas!

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Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

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