can you use wood filler after painting?

If you are planning to paint the walls of your home, it is a good idea to use wood filler before painting.

This will help in filling up the cracks and holes on your walls so that when you apply a coat of paint over them, the paint doesn’t seep through those cracks and holes.

Can wood filler go over primer?

Yes, wood filler can go over primer. You’ll want to use polyurethane or latex-based primers with a plastic resin binder. These types of primers are fine for both interior and exterior projects.

You’ll find that the easiest way to apply wood filler is with a putty knife or other tool that has a flat edge on it. This allows you to easily spread the filler across your project surface in an even layer.

If you don’t have access to these tools, use a piece of cardboard instead—just keep in mind that this method may not be quite as effective at spreading the product evenly across your project surface as other methods would be.

Wood fillers often come in different sizes and shapes depending on what they’re intended for: some will be flatter than others (and therefore better suited for filling gaps), while others will have rounded edges (which means they’ll blend into existing surfaces more easily).

If you want something specifically designed for covering large areas quickly, consider using self-leveling fillers like Bondo® Liquid Plastic Welder™; these products take less time than traditional wood fillers because there’s less waiting involved before applying them onto your project surface!

Should I use a wood filler before or after sanding?

It’s always better to use a wood filler before sanding. This is because fillers trap dust, which can scratch the surface if used after sanding.

However, if you’re planning on painting over your project and don’t want to remove all of the dust, it’s okay to use a filler after sanding.

In this case, make sure that you clean off any residual dust with a tack cloth before applying the primer or paint (if you’re using water-based paint).

Can you use wood filler on finished wood?

Yes, wood filler can be used on finished wood. However, you should be careful not to get it on the finish or the stain. If you do get it on the finish or stain, you can sand it off and touch it up with paint or stain.

If you don’t sand it off, it will show through the finish when dry.

What do painters use to fill gaps?

You might be wondering if wood filler is the right choice for filling gaps in your wood surfaces. The answer is yes and no.

Wood filler is great for filling small gaps, like those between two boards or planks of a deck or fence. But it’s not as good at covering larger holes or areas, like when you want to make one large piece of trim look seamless with the rest of your walls.

In these situations, you’ll need something else—like spackle or joint compound—to give you an even surface that looks smooth and dry when painted over with paint (or stained).

Can you put filler on top of paint?

Wood filler is a great choice to fill the gaps between the wood and the paint. It can help create a smooth, flawless finish that looks professional and high quality.

In order to ensure that you are using your filler properly, it’s important to know exactly what kind of filler you should use and how to apply it correctly.

To begin with, it’s important to understand what type of wood filler you have purchased:

  • If it’s an oil-based product (like tung oil), then it will be able to withstand moisture better than water-based products like polyurethane or acrylic paints. Therefore, these types of fillers won’t need as many coats on top before painting over them once again (which can get expensive!). However, because oil-based products contain petroleum distillates which evaporate slowly over time – meaning they eventually dry up at room temperature – this means that any surface painted with one should not be exposed too often after application otherwise cracks may occur due because air getting trapped under layers which prevents proper curing so make sure only apply one coat unless absolutely necessary!

Why does wood filler show through paint?

There are a few reasons why wood filler might still show through your paint job. First, wood is not a perfect match for the color of paint you used.

Second, even if you did use a matching color and coat it in multiple coats, there’s still room for error.

When painting over a fresh layer of drywall compound (or an existing wall), it’s important to allow each coat to dry completely before applying another one – otherwise you could end up with “sagging” or blushing on top of what was already painted.

If you’re unsure how long this will take, ask someone familiar with the process or consult our guide on drying times here!

Third, if your project involves painting over wet surfaces (like newly installed cabinets), wait until everything has dried completely before applying any varnish or sealer coats

How do I get a smooth finish with wood filler?

When you’re working with wood filler, you’ll want to smooth it out as best as possible before it dries. Use a putty knife or similar tool to scrape away the excess wood filler, then sand down any rough spots with sandpaper.

Then apply another layer of wood filler and repeat until you’ve reached the level of quality that’s acceptable for your project.

You can also use a roller—but make sure it’s a short nap (like those used for painting), not a long nap (like those used for stippling).

Apply very little filler at once so that your roller doesn’t pick up too much gluey material. And when working with putty knives or rags, don’t apply too much pressure; this will only create more lumps in your final product!

How thick can wood filler be applied?

One of the biggest misconceptions about wood filler is that it can only be applied in thin layers. This isn’t the case; you can apply it as thick as you want, depending on your needs.

The thicker applications will be more durable and show less of a seam when sanded down. However, there are some cons to applying wood filler in a thicker layer:

  • It’s much harder to spread into an even layer with a putty knife or trowel because of how viscous the glue is. You’ll need more patience and experience before attempting this technique!
  • When applied too thickly, it takes longer for the product to dry out completely before you can sand it down and begin painting over top of it (or stain).


In the end, it’s all about what you want to do and how much time you have. If you’re willing to spend some extra time on your project, then go for it! It’s always nice to have an extra layer of protection over your paint job.

However, if you don’t want to spend too much time on this project or just want a quick fix, then using wood filler after painting is a great option too.

Just remember that it might take more coats than normal because there will be less surface area covered by the filler than there would be with paint alone (and therefore less protection against moisture).

This means that if water gets inside your walls later down the road (which happens often), then there could be more damage done than if they were painted right away.”

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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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