How to repair a hole in a door – a step-by-step guide for hollow and massive doors


Want to know how to fix a hole in a door so you can do your own instead of hitting a contractor? It’s a simple task that you can definitely do yourself, even if you’re not a skilled home improvement, as long as you have the right tools, products, and a step-by-step guide – and we have everything you need to know.

Maybe you have a hole in a hollow door or a solid core interior door and we have the details to repair both types. Problem with an outside door instead? We’ll cover you.

Just scroll down for the facts and expert tips so you can create a professional finish.

How to fix a hole in a door

Your doors can be solid or hollow core doors. Hollow core doors have many advantages including the fact that they are lightweight and one of the simpler types of doors to hang, and they can be inexpensive. However, if you accidentally knock something heavy into one of these doors, it is possible to drill a hole, so knowing how to fix a hole in a hollow door is important.

Solid core doors are a little different, but if you want to find out how to fix a hole in such a door, we will give you the guide to repair it.

Alternatively, your door might be a solid wood exterior door with rot damage and we’ll tell you how to fix this too.

How to fix a hole in a hollow door

To fix a hole in a hollow door you will need:

  • Utility knife
  • Paper towels
  • Heavy foam
  • spatula
  • spatula
  • 120 grit sandpaper
  • brush
  • colour

1. Overcast the hole

Use a utility knife held at a slight angle to cut off the frayed edges of the hole. The goal is to get the edges clean and beveled, but not to enlarge the hole more than necessary.

2. Create a barrier around the perimeter of the hole

Take some paper towels and carefully place them in the hollow part of the door around the perimeter of the hole, or try this strategy from Jeff Shipwash, owner of Shipwash Properties, who says, “I like to use a folded piece of cardboard or one thick poster board material. ‘

This will keep the foam you will be using next where it is needed.

3. Apply foam

Now it’s time to apply foam to the hole. Always choose heavy foam for this task, as a strongly expanding version can cause new damage to the door.

Make sure you work carefully to allow the foam to expand and fill the hole. Working too fast can result in using too much foam and damaging the door.

4. Let the foam dry

Let the foam dry before attempting to overcast it. This will likely take about 4 hours, but check the manufacturer’s guidelines on the package.

5. Cut off excess foam

Use a utility knife to trim off any excess foam that has expanded past the hole. Try to leave a concave surface on which to apply putty.

6. Fill the hole

Spread a spatula over the hole with a spatula. Make sure that you distribute it as evenly as possible and create a slightly raised surface that you sand back flush with the door in the next step.

Allow to dry according to the manufacturer’s instructions.

Would you like an alternative to filler? “Use synthetic wood because it can be sanded, dyed and can also absorb color,” recommends Andrew Ervin, founder of the Maxsin Investment Group.

7. Sand the surface

Sand the surface with 120 grit sandpaper until it is flush with the door and smooth.

8. Paint the area

First clean the area with a damp cloth to remove dust, then let it dry before painting the door all the way or directly over the repaired hole. You may need more than one layer; If so, let each one dry thoroughly in between.

How to fix a hole in a solid core door

A solid heartwood door is less likely to be damaged, but if you need to know how to fix a hole in such a door, keep in mind that you should have the following on hand:

  • Wood filler
  • spatula
  • C-clamps
  • Piece of wood
  • Drywall grout
  • Sandpaper
  • brush
  • colour

Use wooden spatula according to the package directions to fill in the hole, leaving the patch slightly concave.

Use C-clamps and a piece of wood to cover the repair and let the filler dry.

Remove the C-clamps and wood and spread drywall grout over the repair.

Let it dry, then sand it smooth before painting the repaired area.

How to fix a hole in an outside door

Want to know how to fix a hole in a solid wood door that leads to the exterior of your home?

If the wood is rotten, you will need to chisel it out first, then use a heat gun to dry the area. Next, apply wood hardener to the damaged area, let it dry and then fill it with a wooden spatula for outdoor use. Allow to harden and sand smooth before repainting.

How much does it cost to fix a hole in a door?

It likely costs around $ 200 to $ 300 (£ 70 to £ 100) to fix a hole in a door if you’d prefer to pay a professional to do the job for you. This could make the repair more expensive than hanging a replacement door panel, so ask your contractor about the alternatives.


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