How to fill holes in wood with epoxy - Jenolite

How to fill holes in wood with epoxy

Posted by Ben Spargo on

Holes can appear in wood for a variety of reasons. Some result from how the wood has naturally grown and others are caused by things like damage or incorrect drilling. Epoxy putty is the perfect tool for filling in holes in wood when you're looking to repair a structural defect, as it works like a natural wood by forming a polymer compound that cures to the same density as wood. It accepts different finishes, such as varnish, oil and paint, it dries very quickly and also dries without any shrinkage.

Watch: How to fix holes in wood with epoxy


The wood epoxy putty that we will discuss in this article effectively repairs cracks, holes and gaps on all types of wood and by-products. The application is very easy on any wood indoors and outdoors, and is incredibly resistant to shocks due to it's great structure. It also provides a hole repair that is very easy to sand, as it does not clog the abrasive bands thanks to extremely fine components.

In this blog post, we will be walking you through the steps in preparing wood holes for filling and then how to apply the epoxy to the hole.

Prepare the hole in the wood for filling

The first step to filling any holes in wood is to correctly prepare the hole, because any rotten wood still left in the hole will not allow the epoxy filler to work correctly, and will not fully fill the hole.

Firstly, it is vitally important to properly control the humidity contained in the wood, making sure that the water content does not exceed more than 20% when treating the material. This is an often overlooked step that is very important to filling holes in wood, due to the fact that if the substrate is too saturated with water, there is a higher risk of shrinkage, warping, cracking or splitting the wood.

The next step is to clear out any rotten wood around the hole until you reach sound wood. It is better to remove too much rotten wood than not enough, because if the rot is not properly removed, the deterioration may start again after the repair.

The last step in preparation is to fully degrease the surface of the wood. This is to prevent the wood being too oily, because a clean block of wood greatly facilitates the penetration of the upcoming treatment.

How to fill a hole in wood with epoxy

Now that you have a clean block of wood, the next step is to apply the epoxy to the hole. Start by cutting or twisting off the required amount of Jenolite’s wood epoxy putty repair stick, making sure to only use the necessary amount for the size of the hole you are filling.

Hand mix your epoxy by kneading it with your fingers until a uniform colour has been formed. If this is proving to be difficult, you can warm the epoxy stick to room temperature to make it easier to knead. If this is still proving tough, heat the epoxy to slightly above room temperature, and try again.

Next, apply the epoxy to the hole within ten minutes of mixing. Force it into the hole, making sure to completely fill it. Once the epoxy is fully in the hole, strike off any excess either side of the hole with a tool moistened with water, as this will make it easier to get a smooth cut either side. Then simply wait for 60 minutes for full functional strength to be achieved.

This can then be sanded down to achieve the desired finish, and then painted, waxed or varnished to your taste. If the hole you’re filling in is on an exterior door, make sure to take a look at our range of exterior door paint to repaint your door after filling in the hole.

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  • SIMPLE TO USE: Two part epoxy putty that can be hand mixed and applied
  • FAST ACTING: Ready to use in minutes, typically fully functional in 60 minutes (review technical data sheet for exact timings)
  • MULTI-SURFACE APPLICATIONS: Metal / Plastic / Fiberglass / Ceramic / Etc
  • INDOOR & OUTDOOR USE: Suitable for interior and exterior use
  • WEATHER PROOF & RESISTANT TO CORROSION: Resistant to water, chemicals and temperature extremes
  • EASY TO USE: Easy to mould to join, rebuild and repair most surfaces 
  • DURABLE: Once cured it is fully waterproof and can be sanded and painted
  • MADE IN BRITAIN
JENOLITE Epoxy Putty Sticks are a range of two part epoxy sticks that can be used to rebuild and repair most metals, plastics, fiberglass, ceramics, etc. The easy to use sticks can be hand mixed to create a polymer compound that can be moulded, wrapped or used to join components or build up and repair just about anything. Once fully cured it is completely waterproof and can be sanded, sawn, drilled and painted over.
  • PLASTIC EPOXY PUTTY: Plastic Epoxy Putty Stick is a two component epoxy stick, that can be used to repair and rebuild most plastics. The hand-mixable, fast-setting epoxy resin putty forms a durable bond to most major plastic types. After mixing it creates a polymer compound that can be moulded, wrapped around, or used to build up and repair just about anything made from rigid or semi-flexible plastic.
  • TITANIUM EPOXY PUTTY: A non-rusting, titanium reinforced epoxy resin putty that quickly repairs or rebuilds anything made of metal. Ideal for repairing cracked, snapped and holed metal, it offers an industrial strength solution. Suitable for high temperature use – up to 260°C. Functional after 60 mins, once fully cured it is completely waterproof and can be drilled, tapped, machined, ground, filed and even painted.
  • ALUMINIUM EPOXY PUTTY: A non-rusting, aluminium reinforced epoxy putty. This putty quickly repairs or rebuilds anything made of metal. The two part epoxy resin can be mixed by hand and applied directly to the area that needs repairing or rebuilding. Ideal for repairing scratched, chipped and cracked metal. Once fully cured the putty can be drilled, tapped, machined, ground, filed and even painted. Easy to use, and essential for any mechanic's store cupboard!
  • STEEL EPOXY PUTTY: A non-rusting, steel reinforced epoxy putty that quickly repairs or rebuilds anything made of metal. The two part epoxy resin can be mixed by hand and applied directly to the area that needs repairing or rebuilding. Ideal for repairing scratched, chipped and cracked metal. It offers an industrial strength solution that can withstand temperatures up to 149°C.  Functional after 60 mins, once fully cured it is completely waterproof and can be drilled, tapped, machined, ground, filed and even painted.
  • COPPER EPOXY PUTTY: A two component epoxy resin stick, that can be used to repair pipes, tanks, hot pipes and vessels made of brass, copper, bronze and other non ferrous metals. Ideal for plumbing elbows, sink taps and water heaters. Will also seal freeze breaks in pipework. The hand-mixable, fast-setting epoxy putty forms a durable bond that after mixing creates a polymer compound that can be moulded to fit. Once fully cured it is completely waterproof and can be sanded and painted over. Ideal for plumbing emergencies such as repairing leaking hot lines. Perfect for pipe repair and plumbing applications, Jenolite's copper epoxy putty stick is the essential plumber's epoxy. Applications include plumbing elbows, sinks, taps, and water heaters. It can be used on brass, copper, bronze, and other non-ferrous metals.
  • UNDERWATER EPOXY PUTTY: A hand-mixable, specialty epoxy putty for repairs to damp, wet areas and underwater surfaces. After mixing, the epoxy resin forms a polymer compound that may be applied underwater (either fresh or salt water) and will bond tenaciously to substrates such as fiberglass, concrete. Ideal for marine repairs and repairs to damp, wet and underwater surfaces, such as holes, cracks, leaks and gouges in decks and hulls, swimming pools, hot tubs, spas, recreational equipment, as well as leaking tanks and gutters.  Full functional after 60 mins, once fully cured it is completely waterproof and can be drilled, tapped, machined, ground, filed and even painted.

Plastic Epoxy Putty Stick is a two component epoxy stick, that can be used to repair and rebuild most plastics. The hand-mixable, fast-setting epoxy resin putty forms a durable bond to most major plastic types. After mixing it creates a polymer compound that can be moulded, wrapped around, or used to build up and repair just about anything made from rigid or semi-flexible plastic.

A non-rusting, titanium reinforced epoxy resin putty that quickly repairs or rebuilds anything made of metal. Ideal for repairing cracked, snapped and holed metal, it offers an industrial strength solution. Suitable for high temperature use – up to 280°C. Functional after 60 mins, once fully cured it is completely waterproof and can be drilled, tapped, machined, ground, filed and even painted.

A non-rusting, aluminium reinforced epoxy putty. This putty quickly repairs or rebuilds anything made of metal. The two part epoxy resin can be mixed by hand and applied directly to the area that needs repairing or rebuilding. Ideal for repairing scratched, chipped and cracked metal. Once fully cured the putty can be drilled, tapped, machined, ground, filed and even painted. Easy to use, and essential for any mechanic's store cupboard!

A non-rusting, steel reinforced epoxy putty that quickly repairs or rebuilds anything made of metal. The two part epoxy resin can be mixed by hand and applied directly to the area that needs repairing or rebuilding. Ideal for repairing scratched, chipped and cracked metal. It offers an industrial strength solution that can withstand temperatures up to 149°C.  Functional after 60 mins, once fully cured it is completely waterproof and can be drilled, tapped, machined, ground, filed and even painted.

A hand-mixable, specialty epoxy putty for repairs to damp, wet areas and underwater surfaces. After mixing, the epoxy resin forms a polymer compound that may be applied underwater (either fresh or salt water) and will bond tenaciously to substrates such as fiberglass, concrete. Ideal for marine repairs and repairs to damp, wet and underwater surfaces, such as holes, cracks, leaks and gouges in decks and hulls, swimming pools, hot tubs, spas, recreational equipment, as well as leaking tanks and gutters.  Full functional after 60 mins, once fully cured it is completely waterproof and can be drilled, tapped, machined, ground, filed and even painted.