Does wood filler shrink as Dries?

Wood filler is a material you can use to repair holes or cracks in wood. It’s different from plaster, which is meant for interior use only and doesn’t take well to moisture exposure.

You can find wood filler at most home improvement stores, but it may be off-limits if you’re working with an older home that isn’t up to code—some counties prohibit it because it can harbor mold growth if not properly sealed.

If you’re working with new construction, though, you have nothing to worry about: just make sure that your home is dry before applying any type of wood putty or wood filler.

Does wood filler dry as hard as wood?

Yes, wood filler dries as hard as wood.

It is sanded, painted, and stained like wood.

However, it’s not as strong or durable as wood. It will also shrink somewhat when drying so you have to be careful not to apply too much glue to the surface of the wood being filled in order for it not to separate when it dries.

How long does wood filler take to harden?

Wood filler will generally take a few hours to several days to harden, depending on the temperature and humidity in your home. In a warm room, it can harden faster than if you’re working in a cool room.

The type of wood filler you use also affects how quickly it dries: an oil-based product may take longer to dry than a water-based one.

Does wood filler expand?

As a homeowner, you may be familiar with the common use of wood filler. This is a material that can be applied to cracks or gaps in the surface of your home’s wooden beams, stairs, and other structures to fill them in and make them appear smooth again.

You might also want to use it on furniture items such as tables or chairs that have been damaged due to normal wear-and-tear over time.

Wood filler dries as it hardens. As such, you should know this before using any type of wood filler product because it may shrink slightly after drying out completely – but not by very much at all!

In fact, most types of wood filler won’t shrink more than 3% once they’re fully dry (a number that falls well within industry standards).

So if you’ve got some gaps in your table legs where paint has chipped off around its edges then don’t worry about having holes left behind after filling them up with new paint later down the road—just throw some rustic-looking stain over top afterward!

What consistency should wood filler be?

To make sure you have the right consistency, test it with a putty knife. If the wood filler is too thick, it won’t spread evenly and will leave marks on your project.

You should be able to spread the wood filler easily with a putty knife or your finger.

Which is better wood putty or wood filler?

Wood putty and wood filler are both used to fix holes in wooden surfaces. The difference between them is that the putty is softer, more malleable, and pliable than the dry filler.

Putty can be applied directly over a hole or other defect without sanding or sanding first, but because it’s softer it will tend to sag as it dries.

The filler also comes in wet form but has a harder consistency that retains its shape when dry; this makes it easier to apply and results in less sagging when dried.

Putty is ideal for filling small gaps or gouges where only minimal amounts of material need replacement since it’s easy to shape with your hand during application and while drying.

It should not be used on large areas like floors; instead, use dry fillers such as joint compounds for larger areas of repair or patchwork jobs.

Is wood filler as strong as wood glue?

While wood filler is stronger than wood glue, it’s not as strong as real wood. It can be used to fill holes and cracks in wood. But it will not hold screws or nails.

Wood filler should be used in conjunction with a strong adhesive such as epoxy glue or polyurethane adhesive to create a solid repair job.

If you are putting two pieces of new lumber together with screws or nails after you have sanded down the boards, then use a good quality exterior-grade construction adhesive instead of wood filler first before nailing your boards together if they are going outdoors where rain will hit them directly (such as decks).

Is wood filler strong enough to screw into?

No, wood filler is not strong enough to screw into. Wood glue and wood putty are both stronger than wood fillers.

Do I need to seal wood filler?

A wood filler that is a two-part epoxy resin, such as Bondo, is not self-sealing and will require a sealant. This type of filler is easy to work with and can be sanded after drying.

However, it does have a tendency to shrink during the drying process so you’ll need to allow for this when caulking around your project’s edges.

If you want to paint over your project once it’s completed, then you’ll need to seal the filler with an exterior latex-based sealer (for example Behr Premium Plus Ultra Cover Stain & Sealer in Satin).

Some people prefer using polyurethane for sealing their projects; however, this may result in yellowing over time due to UV exposure from sunlight or indoor lighting sources like incandescent bulbs or halogens/metal halide bulbs.


I hope this article has helped to answer some of your questions about wood filler. In general, it is a good idea to use wood filler instead of wood putty if you want something that will be stronger and last longer.

If you are looking for something more temporary or if you just want something that will fill in small holes or cracks, then by all means go with the putty!

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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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