How To Fix A Hole In A Door

Your doors could be solid or hollow core. Hollow core doors are lightweight, easy to hang, and relatively inexpensive. The problem with these is that a hole in a hollow door can occur if you accidentally knock something heavy through it.

A solid core door is a little different, but we’ll show you how to patch a hole, and if your door is solid wood and has a hole where old locks are fitted, for example, you can see how to go about that fix.

In our guide, you can learn all there is about how to repair hollow-core doors, how to repair punch holes in hollow doors, and deal with solid wood door issues.

reddoor knob

By the end of our step-by-step guide, you’ll be able to repair hollow core door holes with the least amount of effort and materials. (Read Standard Garage Door Sizes Guide)

How Do You Repair A Hole In A Hollow Core Door?

Hollow core doors are cheaper and more common than solid wood doors for internal use, yet they can sometimes break with even slight contact from the corner of furniture or kids playing.

Here’s the entire process of filling and fixing the hollow door hole inside your door with materials you can get from your local hardware store.


  • Hammer
  • Screwdriver Phillips or flathead screwdrivers will suffice
  • Utility Knife
  • Needle-Nose Pliers
  • Putty Knife
  • Popsicle Stick
  • Sandpaper – fine-grit sandpaper gives a smooth finish for your matching paint.
  • Paintbrush

Materials Needed

  • Cardboard – thin and corrugated
  • Low-Rise Expanding Foam insulation foam
  • Plastic Wood
  • Paint or wood stain
  • Masking Tape

Entire Process of How to Fix Hole in Door

1. Remove Your Door

It must be horizontally on a level surface to fix your door, so take it from the hinges. Don’t use an electric drill to remove screws, as you can cause more damage.

Starting with the bottom hinge, gently tap the pin’s head with the hammer to push it up and out of the hinge assembly.

Repeat for the top hinge, and take it steady as you lack support from the other hinge. Assisting with this task is helpful if you have a helper.

Place your door on a flat surface, so it is stable and supported

2. Clean the Hole

Using the utility knife, clean around the edges to get a clean hole and add a slight bevel to the edge of the hole.


3. Use Pliers

Use the pliers to remove more significant bits of wood and loose splinters from the rough edges of the hole.

4. Cut Cardboard

Cut a strip of cardboard, the same depth as your door. You will use this to stop the foam insulation from spreading into the hollow space inside your door.

Depending on the hole’s size, you may need to fill some of the void using tissue paper or a few paper towels. (Read Garage Door Won’t Close All The Way – What To Do)

5. Mask the Area

The foam is very sticky, so take some masking tape and create a frame as close to the hole as possible. You can save lots of hassle when clearing up any excess foam that spills over from the hole. 8.

6. Add The Foam

Read the manufacturer’s instructions as you need to shake the can right. Once your cardboard is in position, you can add your low expansion foam. A lot goes a long way, so don’t fill the hole with foam.

7. Let it Cure

Wait for your expanding foam to cure fully, which can take a few hours, so it is best to let it dry overnight

8. Trim

You will see the insulating foam expand outside the hole and onto your masking tape. Take your utility knife and remove the excess material. Create a slight indentation so you can fill using your plastic wood or joint compound.

9. Fill

Remove your masking tape and apply your plastic wood filler to the damaged area. Spread it evenly using the popsicle stick. Add extra filler to allow for shrinkage during drying, and in the sanding process, you can get a smooth finish.

If you don’t have plastic wood, you can use auto body filler, yet you need to mix this with a hardener catalyst. It will also take longer for the repaired area to cure completely.


10. Sand

Begin sanding with your fine-grit sandpaper and sand until you have a completely smooth surface to which you can add your fresh coat of paint.

11. Clean

Clean with a damp paper towel or damp towel to remove dust as you sand smooth the area you filled.

12. Paint

Once you get the right paint, apply the paint with a paint roller. Let the paint dry, and then hang the door back in the frame.

How Do I Fill A Hole In A Wooden Door?

Another common issue is cracking appearing in solid wooden doors, occurring most commonly in exterior panel doors.

Addressing hairline cracks is not as difficult as many people think and can leave you with a waterproof solution in your exterior door.


  • Utility Knife
  • Hacksaw Blade
  • Flat Head Screwdriver
  • Putty Knife
  • Paper Towel for cleaning
  • Paint Brush
  • Fine grit sandpaper


  • Natural Fiber String – thin, cotton, or hemp twine with two or three strands
  • Elmer’s Glue
  • Plastic Wood filler
  • Paint – match colors, or you could paint the entire door

Fixing Cracks in Solid Wood Doors

  1. Clean the crack edges with the utility knife and hacksaw blade
  2. Measure two pieces of string longer than the crack length
  3. Soak the first piece of string in Elmer’s glue
  4. Use the flathead screwdriver to pack the string into the crack
  5. Repeat the process with the second string, and leave a small gap for your putty or filler
  6. Let the glue harden for several hours
  7. Once hard, wipe the area with a paper towel to give the putty a clean surface
  8. Use your putty knife and apply wood filler over the gap and let the material dry
  9. Using your fine-grit sandpaper, sand until smooth and wipe with a damp cloth
  10. Paint the area to match the rest of the door. If painting all the doors, remove the strike plate and other fittings before painting.

How Much Does It Cost To Fix A Hole In A Door?

Door breaks can occur for many reasons. Repair costs depend on the extent of the damage, the door’s materials, and if the door needs to be replaced. A good average across the country can be around $150 upward. Using the fixes here, you can fix your door for less than $50 in most cases.

To save on costs, you can quickly ass a wall guard to stop your door from opening wider than you want it to.

How Do You Fix A Hole In A Door With Spray Foam?

Hollow core doors are mostly used for interior doors and can withstand normal wear and tear. However, one unfortunate accident, such as a bang when moving furniture or a screwed-in hook gone wrong, can leave you will a hole.

Here’s how to fix a hole in a door with a few inexpensive tools and materials.

  1. Protect your door from foam insulation, spackle, and paint. Slide a drop cloth under the door.
  2. Tidy the edges of the hole by cutting at the ragged edges using a sharp utility knife at a slight angle
  3. Stuff paper inside hollow area around the perimeter of the hole with paper towels or newspaper
  4. Spray low-expansion foam insulation into the hole using the supplied can straw
  5. Let it set for 10 to 15 minutes or longer until no longer tacky sticky
  6. Trim with your utility knife
  7. Add your auto-body filler – cover the foam with an auto-body filler with a plastic putty knife and let the filler dry completely.
  8. Sand the filler using 120-grit sandpaper. Remove dried auto body filler and create ensure you have a seamless surface with no visible lines. (Read Can You Sand Concrete With Regular Sandpaper)
  9. Touch up with matching paint around the repaired hole

How To Fix A Hole In A Door (1)

Leave a Comment

Your email address will not be published. Required fields are marked *