Epoxy Wood Filler: The Ultimate Guide

Sep 10, 2021 | Tools Materials

We know that epoxy wood filler is an excellent solution for filling holes and cracks in wooden surfaces, but it can be frustrating when you don’t know what type of epoxy wood filler to buy. There are so many options out there! 

This guide will help you choose the best epoxy wood filler for your needs. It’s designed with beginners in mind so even if you’ve never used this kind of product before, this article will walk through everything step by step and give you all the information you need to make sure your project goes smoothly.

Best Epoxy Wood Fillers

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1. J-B Weld 8257 KwikWood Wood Repair Epoxy Putty Stick- 3.5 inch

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One of the most versatile products you could have in your household for all those home DIY repairs, this epoxy putty stick will get your restoration project done without any trouble at all. With two different lengths, it’s perfect to pursue whatever size job you need to do and its long-lasting formula will help make that surface last far longer than just a few days. Easy to use with an easy-to-follow mixing process, don’t hesitate before trying out J-B Weld with our great product.


  • Long-lasting formula
  • Easy to use with easy to follow mixing process
  • Variety of lengths which makes it versatile
  • Can be used for a variety of projects


  • You will need to wipe off the excess after using it if you want to use your surface normally. Your project won’t function properly in any case if there is still epoxy on it.
  • Once cured, this product cannot be removed and so make sure you don’t apply too much before starting your project. If you use too much, simply sand down what you have applied and reapply some more. This shouldn’t be a problem for smaller jobs though and should only really occur if you are filling a large area.

2. Minwax 21600000 High-Performance Wood Filler

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Minwax 21600000 High-Performance Wood Filler is a go-to for anyone who loves their home and wants to keep it in top shape. It permanently repairs any damaged or rotted wood, not just on your interior but also exterior. It can fill any gouges or holes you have with ease and be used as glue to help secure loose joints.


  • Permanently repairs damaged or rotted wood
  • Can fill any gouges or holes with ease
  • Goes on smoothly and doesn’t shrink
  • Useful as glue to secure loose joints.


  • The product cannot be sanded after application so make sure you don’t put too much on your surface (it will leave permanent marks). You can use steel wool instead of sandpaper if you do not have a better option available.
  • You will notice that the epoxy becomes cloudy once applied but this is normal and does not mean that it wasn’t mixed properly. It helps ensure that the compound cures properly so you should continue to let it sit for several hours before you allow the surface to return back to its normal use.

3. Elmer’s E855 Carpenter’s Wood Filler

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Elmer’s Wood Filler is perfect for those small repair jobs around your house. The primer and wood filler work together to provide a seamless finish, easily sanded and paintable. For paintless fixes in need of filling, Elmer’s fills the gap with ease.


  • Easy to use
  • Variety of small size
  • Perfect for multiple projects around the house that need filling.


  • You do have a limited window before this product starts to set so be sure not to take too long before you start your project. Luckily, it dries in under an hour and can be sanded after thirty minutes so you should still have plenty of time to complete it properly.
  • If you are looking for something that requires no priming or drying then this isn’t the best epoxy wood filler but Elmer’s perfect for those smaller jobs that require some assistance when repairing damage around your property.

4. Bondo 20082 Home Solutions Wood Filler

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Bondo 20082 Wood Filler Kit has a lot of benefits for the DIYer who wants to make quick and durable repairs on both damaged and rotten wood. It can be used indoors or outdoors, is water-resistant, fast-drying, sandable. Whether you want to fix doors, windows, furniture or other items with this filler it’s sure to do the trick! Just let it sit for about half an hour after application then start your sanding process if desired.


  • Fast-drying and sandable
  • Can be used both indoors and outdoors
  • Seamless finishing
  • Variety of sizes available for easy use.


  • You will need to wipe off the excess after half an hour if you want to use your surface normally. Your project won’t function properly in any case if there is still epoxy on it.
  • Highlighted as being great for larger jobs but only useful for smaller ones too (although this isn’t necessarily a bad thing as that makes it versatile). The product can also dry out over time so make sure you frequently check on your supply or replace it when necessary.

5. Two Cans Wood Repair Epoxy Paste

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Two Cans Wood Repair Epoxy Paste seals up your furniture and makes a great spot-repair solution. This two-part epoxy wood filler paste is perfect for filling up any missing or rotting wood in your furniture, whether indoors or outside. Resistant to UV light, mildew, and dry rot, this two can pack of epoxy will come with a lot of time to work with—30-40 minutes! Past that point, you’ll need to use windbreakers if the temperature dips below 50 degrees Fahrenheit or add more hardener #15 when it reaches 80 degrees Fahrenheit Plus (20°C). The finishing product is machineable/stainable (the latter only after the filler has fully cured).


  • Great for larger projects around your home.
  • Fast-drying product and workable time of thirty to forty minutes
  • Variety of sizes for ease of use.


  • You’ll need to add more hardener if the temperature dips below fifty degrees Fahrenheit so this may not be the best option depending on where you plan on using it.
  • You may find that even with a can at hand that won’t leave much time to complete your project or do any sanding before applying final coats.

6. Coconix Floor and Furniture Repair Kit

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If you’re worried about accidentally ruining your furniture, this product is perfect for you. This repair kit comes with an epoxy wood filler that can be used to repair any damage that may have been caused by paint, water rings, or dropped items. With it, you’ll get 10 base compounds so you can mix them to match the exact color of your furniture just in case any spot was missed when repairs were being made.


  • Can be used to repair just about anything such as furniture, floors, and woodwork.
  • Variety of colors available for easy matching to your current furniture style.
  • No strong odor that would affect you or anyone else in the room where it is being used.


  • Dried products will not be sandable so a lot of time should be planned when using this filler paste.
  • Putting too much may cause a tough time removing excess paste from your workspace which can eat up more time than desired (although it does dry quickly).

What is an Epoxy Wood Filler?

Epoxy wood filler is a two-part compound that consists of a resin and a hardener. The resin is the substance that provides elasticity, while the hardener provides rigidity. When mixed together they create an extremely durable substance capable of filling in larger cracks and holes in wood surfaces.

Epoxy wood filler sets within 25 minutes but requires about one hour to fully cure making it ideal for most projects.

Once cured it is strong, tough, resilient, and moisture resistant which makes it perfect for jobs like repairing furniture or wooden items that come into contact with water on a regular basis such as boats. It’s also possible to tint epoxy wood filler if you prefer your project has a different colour scheme than the surrounding area (you can buy tints at any art supply store)

There are a couple of considerations to keep in mind before you decide if the epoxy wood filler is the best solution for your project.

First, it’s important to determine what kind of surface you will be working with and select the proper epoxy wood filler accordingly. For example, mahogany looks great when stained because it has a red tint but it can’t be stained with an oil-based stain so using an oil-based epoxy on this type of wood would have disappointing results.

Second, consider how large the holes or cracks are before selecting your product since some products are better suited for smaller imperfections than others. Before starting any interior type of project always read and follow the manufacturer’s instructions for use carefully!

What Are The Different Types of Epoxy Wood Filler?

Epoxy wood filler comes in three different types: one-part, two-part and oil-based. One-part epoxy is ideal when you want a product that will dry clear while two-part products become more elastic and flexible as they cure which makes them a great solution for filling larger holes or cracks. However, because the two components are mixed together this type of epoxy is only available in small tubes instead of big buckets like one part fillers.

The difference between the kinds available can be confusing at first so here’s some guidance on what kind to select based on your needs: If you’re working with an oil-based wood surface (like mahogany) then we would recommend using an oil-based epoxy wood filler. You should also use this type of product if you need a lot of high-strength bonding power or if you’re working with an extremely large area to fill. If you want the option to purchase higher strength formulas that are waterproof, impact and rust-resistant then look for products that have been formulated to meet your needs.

Finally, consider using two-part epoxy if you will be filling a larger hole or crack in the wooden surface. The flexibility these types provide make them ideal solutions for bigger jobs while one part filler is best reserved for smaller gaps in wood since it sets quickly and remains quite rigid even after it cures.

Will Epoxy Stick to Wood Filler?

Yes, epoxy will stick to wood filler but it’s important to note that in order to create a strong bond you’ll have to sand the surfaces of both components before you use them.

How To Use Epoxy Wood Filler

The most common mistake people make when using epoxy is not mixing the two components thoroughly enough which can prevent the product from curing properly and reduces its effectiveness. Follow these easy steps to guarantee great results:

  • Clean off any dirt or debris with warm water (it’s best if you do this outside) and allow your project surface(s) to completely dry before applying the compound.
  • Mix equal amounts of resin and hardener together in a disposable container until they are fully blended (make sure there are no lumps).
  • Apply the mixture to your surface and allow it to cure (you will know it’s ready when the epoxy becomes clear).

Tips for Filling Larger Holes or Cracks in Wood

If you’re trying to fill a large area then these simple steps will make sure you get professional results:

  • Prepare your project by clearing off any loose debris (it’s best if you do this outside).
  • If there are any screws that need removing then remove them first since they can prevent the epoxy from curing completely.
  • Use sandpaper on both sides of your surface (both the woodside and the filler side) with 180 grit paper or finer sandpaper, this will help condition both components so they stick better. Your filler and wood surfaces should be rough enough that they will bond properly.
  • Apply epoxy sand the repair area evenly and allow it to cure (you will know when it’s ready because the mixture will go clear).


The use of epoxy wood filler is a great way to fix any damage that has been caused on your property due to an accident or other issue. From filling up holes in furniture, floors, and more you can find the right product for your needs here. Just make sure you follow all instructions before applying so as not to have issues with sanding down afterward. This post should help guide you through choosing the best option for repairing damaged areas both indoors and outdoors!


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