does wood filler go bad?

Elmer’s wood filler is a useful product that can fix many things around the house, from cracks in walls and doors to holes in furniture.

But how long does it last, and what’s the best way to use it? Here are some tips on how to keep your Elmer’s wood filler fresh and effective for as long as possible:

How do you revive old wood filler?

If your wood filler is old and dried out, it can be tough to remove. To get the job done, try using a combination of these tools:

  • Damp cloth. A wet rag will help soften up the hardened wood filler so that it’s easier to scrape off.
  • Putty knife (or similar tool). Use a putty knife or other sharp-edged tool to pry off stubborn pieces of wood filler without damaging your project surface or leaving behind any gouges in your wood.
  • Wire brush (optional). If there are still bits of dried-up filler clinging stubbornly to your project surface, use a wire brush to remove them completely; this will also help you smooth out scratches left by scraping with tools like putty knives or sanding blocks.

Can you add water to dried wood filler?

Yes, you can add water to dried wood filler. However, adding too much water will cause the wood filler to become soft and mushy.

To prevent this from happening, mix in small increments of water until you have a consistency that’s stiffer than pancake batter but still pliable enough for molding and filling holes.

Remember: The type of wood filler determines how much water you should add. Lighter-colored fillers tend to be more absorbent than darker ones so it may take less time before they dry up if they’re mixed with too much moisture.

Does wood filler crack over time?

Yes, wood filler can crack over time. But there are some simple things you can do to prevent it from happening.

  • Sand your project down before you apply the wood filler and wipe away any dust with a damp rag. This will get rid of any rough patches on your piece, which in turn makes for a better patch job when you apply the wood filler.
  • If you’re using a wet saw to cut something out, try using a drywall knife instead—it’ll make for cleaner cuts and less chance of cracking!

You might have noticed that in some cases when wood filler does crack over time, this doesn’t really affect its ability to be sanded smooth since the cracks usually aren’t very big (and if they are big enough then it’s probably best just not use that particular piece).

So if this happens to your project then don’t worry about it too much! In fact…

What’s the difference between wood putty and wood filler?

Wood putty and wood filler are both made to fill cracks, holes, and voids in wood. It’s important to know the difference between these two products so that you can choose the right one for your project.

Wood putty is a softer material that makes it easy to work with but requires more time to dry before sanding. Wood filler dries harder than putty so it can be sanded immediately after applying it.

Filler will also hold up better over time compared to putty because it has less moisture content than putty which makes it last longer against water damage or mold growth.

Putty costs less than filler as well but both come from similar ingredients: resin, wax, and pigment which gives them their unique coloration depending on how much pigment has been added during production (more pigment = darker).

Can you put a wood hardener on wood filler?

A wood hardener is a water-based compound that is used to repair cracks in wood and make it stronger.

A wood filler is an organic material, such as sawdust or flour paste, that you can use to fill holes and gaps in your furniture or floorboards.

Wood putty and wood filler differ based on their consistency: putty has a drier consistency than filler does; it’s also easier to work with because it’s more malleable. Wood conditioners are used for protecting your furniture from water damage and mold growth; they’re applied after you’ve sanded down the surface of your piece but before you apply any other products like stain or varnish. For example: “Let me know if my cat knocked over anything while I was gone.”

Is wood filler water based?

  • Yes. It’s water based, meaning it’s soluble in water.
  • Wood filler is not oil-based, latex-based, silicone-based, acrylic-based or epoxy-based.
  • While some types of wood filler are polyurethane-based or contain some other type of resin (like epoxy) as an ingredient at low concentrations to make them more flexible and increase the bonding strength with wood surfaces and other materials such as concrete or plastic sheeting which may be exposed to moisture over time – these are not considered “water based.”

Can you thin out wood filler?

If you’re going to use a putty knife, brush, or trowel, be sure to use something that can hold the dry filler firmly.

Don’t use a smooth-handled tool like an artist’s paintbrush; it will only push the filler around and make a mess.

The best implement is some kind of flat blade with a bit of texture on it—your local hardware store should have plenty of options to choose from.

What is Elmer’s wood filler made of?

  • Elmer’s wood filler is a water-based, non-toxic product that comes in a range of colors.
  • The filler is made up of a combination of wood pulp, clay, and water. This helps to keep the moisture content low when it goes bad so that mold doesn’t grow on your project.
  • It has no odor and won’t harden or shrink after you use it, which makes it ideal for filling holes and cracks in your project


Hopefully, this article has helped you understand what wood filler is, how it works and what to expect when using it.

If you still have questions about wood fillers or want to learn more about them.

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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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