how to make waterproof wood filler?

When you’re working with wood, it’s inevitable that you’ll need to fill holes. Wood putty and epoxy are two of the most popular types of fillers out there.

They’re easy to use, but there are some important differences between them that you should know before making a decision. Let’s take a look at these products and learn how to make waterproof wood fillers.

How do you make waterproof fillers?

As a general rule, water-based wood filler is easier to apply and more versatile than oil-based versions. However, it’s also more difficult to work with because it dries much faster than oil-based fillers. This can leave you rushing to finish the job before the product dries out on you.

To make sure that this doesn’t happen, follow these steps:

  • Apply your waterproof sealant in several coats instead of one thick coat. Thick coats will take longer to dry and may not be completely cured by the time you go back over them with new layers of wood filler or paint. If necessary, use multiple cans of sealant rather than attempting one large application per can (which might lead to clumps).
  • Let each layer dry completely before applying another coat; if possible, let each layer cure overnight before moving on to the next step (i.e., sanding between coats).

How do you make homemade wood filler?

You can use a mixture of sawdust and glue to make homemade wood filler.

Mixing sawdust with glue is a good way to make waterproof wood filler, though not as sturdy as using clay or plaster.

Adding sand will help strengthen the mixture but also make it heavier and more difficult to work with. You’ll need about 4 pounds of sand for every gallon of glue you add (which will vary depending on how much water you mix in).

This makes an excellent option if you’re looking for something lightweight yet still effective in filling holes, cracks, dents, and other imperfections in your piece of furniture or other item made from wood.

Does wood filler waterproof?

Yes. In fact, there are many types of waterproof wood fillers you can use to make your projects better. Learn how to make your own waterproof wood filler on this page!

How do you make epoxy wood filler?

To make epoxy wood filler, you will need to mix equal parts of epoxy and hardener. Mix these together well until the mixture is smooth.

Apply this to your wood, and allow it to dry. Sand down the surface after drying, sanding back any rough edges or imperfections in your piece of furniture until you reach a level finish.

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

The main difference between wood putty and wood filler is that the former is soft and malleable, while the latter is hard and solid.

They are both made of similar ingredients, but with different proportions. Both products are used to fill holes or cracks in wooden surfaces.

Wood putty is usually applied with an artist’s brush, while wood filler can be troweled on or spread with a putty knife.

What is a good substitute for wood filler?

If you’re looking for a waterproof wood filler that is easy to work with, consider silicone caulk. Silicone sealants are great for filling gaps in the cracks between boards on your deck or patio.

They can be used outdoors or indoors and are waterproof once cured (takes about 24 hours). Silicone caulk comes in different colors so it blends into the background instead of looking like an obvious repair job!

Epoxy generally has higher strength than many other types of adhesives but requires more skill to use because it sets up quickly and doesn’t allow much time for adjustment before it sets hard enough not to move again.

That said, if you want your repair job done right the first time then epoxy is probably your best bet since it will hold together better than most other materials can offer at a such low cost per unit area covered by application.”

How do you make wood filler with glue?

The best way to make wood filler is with glue. There are a few different types of glue you can use. If you want to make waterproof wood filler, then polyurethane resin is the most effective type of glue to use.

If you want your project to be waterproof, then polyurethane resin would be a good choice for making your wood filler because it will create a thicker consistency which in turn increases durability and strength as well as creating a waterproof bond between the two materials together so that they don’t separate over time when exposed to water conditions such as rainstorms or snowfall.

Polyurethane resin will give your project better adhesion properties than other types of organic resins due to its chemical composition which makes it more resistant to moisture than other types like lacquer or shellac-based products used by carpenters today which may not hold up well in wet environments such as coastal regions where saltwater exposure could cause deterioration over time.

Can you use silicone instead of wood filler?

Wood filler is a great alternative to silicone for repairing damaged wood. Wood filler is inexpensive, easy to apply, and dries quickly enough that you can paint over it the same day.

It’s also waterproof, so there’s no need to worry about your repair job getting ruined by water damage down the road.

Silicone isn’t a good substitute for wood filler because it won’t stick well to wet surfaces or hold together damaged pieces of wood (which are often already damp).


In conclusion, there are many different ways to make wood filler. You can use a mixture of glue, paint, lacquer, or even just glue alone.

The method you prefer will depend on what materials you have available and how much time you want to spend making your own filler material.

There are also many commercial products available that do not require mixing or blending before use such as epoxy resin which is sold in tubes like toothpaste containers but they tend to be more expensive than homemade versions which take less time since they don’t require ingredients such as pigments which may be hard find at times depending where live located on Earth’s surface.

Photo of author

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.

Leave a Comment