How To Fix A Hole In A Door Solid Or Hollow Core Door

With a handful of tools, a little little bit of know-how, and this guide, you will be able to repair unpleasant holes within the hole middle doorways which are typical in the United States as well as cracks in good wood outside doors.

The most traditional thanks to repair a door is to use a brief expansion filler to fill the space in a hole core door after which sand it down and paint to check the present color. Solid wooden doors, on the different hand, can be constant using string, glue and putty, borrowing an old trick used to repair wood boats.

Before we leap into a step-by-step guide to fixing the holes in your door, let’s check out a few of the important features of doors as well as the typical production methods for those family barriers.

Solid vs. Hole Core

There is a good selection of doors that are utilized in the two indoor and outdoor situations, although, concerning construction, most doors fall into either hollow middle or good styles.

It is a good suggestion to understand what these phrases mean, so you know what type of doorways your home has.

Solid Core Door

As the call implies, these doorways are comprised of good portions of wood, although they are not often made from only one single piece of wood. More often, they are constructed out of several pieces of wood, joined collectively in a panel style and hung within a frame.

These have long been the traditional for family doorways, and they have a number of advantages over different designs:

Hollow Middle Door

In the past 20 years, hollow middle doorways have endured to exchange reliable doorways for home interiors for numerous reasons. These doors, whilst no longer precisely hollow, make use of empty space to chop down on cost and weight. Skinny back and front panels, generally a wood or a fiberboard, sandwich strategically positioned wood blocks or honeycombs made of both plastic or cardboard. This middle is what gives these doors their force and rigidity.

Hollow core doorways have gained popularity, especially in North America, for several reasons:

  • Lightweight
  • Inexpensive
  • Easy to install

Design Styles

Now that we recognise the essential construction techniques in the back of doors, it’s worth looking on the two most common layout styles which are used.

  • Panel Doors. They are commonly used in households due to their classic look. These doors are characterised by means of 3 or 4 horizontal “rails” and three vertical “stiles”, with thinner panels filling the space among them. Decorative molding is often used to accent those traditional doors.
  • Flush Doors. As opposed to the panel design, flush doors are simple, unadorned slabs and are the other so much typical style of interior door. They are additionally more common in contemporary residences than panel doors, despite the fact they paintings equally good in older homes.

Hollow-core doorways are available both varieties, however solid doorways are rarely flush fashion because of the issue of obtaining such large, single pieces of wood.

How to Fix a Gap in a Hole Core Door

The first step to solving your hollow middle door is assembling the equipment and substances you will need. All of those may be discovered at your regional ironmongery store and shouldn’t price more than $50.


  • Hammer. Any kind of small to medium-sized hammer will do as you won’t be utilizing the hook end.
  • Screwdriver. Phillips or flathead screwdrivers will do both works, despite the fact the Phillips style is better because of the smaller length of the head. A #3 Phillips is pretty much excellent for this job.
  • Utility Knife. An adjustable utility knife with sharp blades will make this job much easier.
  • Needle Nostril Pliers. Any small tipped pliers, even a multi-tool, can be used.
  • Putty Knife. A flat-edged or chiseled facet putty knife will do the two works, although based on the hole’s size, you’ll have got to use an even bigger blade. Putty knives are accessible in a variety of sizes, starting from ¾ inch each of the thanks to 6-inch blades.
  • Popsicle Stick. A popsicle stick or tongue depressor is optimal, but any small flat piece of wooden will work.
  • Sandpaper. Fine-grain sandpaper will get you a smooth surface on which to use your matching paint.
  • Paintbrush. A flat brush will work finest for this application.


  • Cardboard. Any kind of thin, corrugated cardboard will work. You won’t want much, so depending on the length of the hole, leftover packaging is ideal for this purpose.
  • Low-Rise Increasing Foam. There are several manufacturers on the market, and that they all operate in truly an identical way.
  • Plastic Wood. When cured, these products are crack resistant and could take paint, so matching the existing color on your door will be easy.
  • Masking Tape. Any overlaying or painters tape will work. Don’t use electrical or duct tape as these can depart a sticky residue which will have got to be cleaned later.
  • Paint. Choose a paint that matches the present colour of your door. One pint should be enough, but in case you suppose you may use an identical color on destiny initiatives (or fix more door holes), purchasing a bigger quantity doesn’t hurt.

Now that we have every little thing we will have to patch the outlet in our hollow-core door, we are able to get started!

The Process of Fixing Holes in Hollow Doors

  1. In order to fix your door, it’s going to have to be laying horizontally on a flat surface, so step one is to take it off the hinges.
  • Starting with the bottom hinge and drawing close from below, location the purpose of your screwdriver on the head of the pin contained in the hinge and lightly faucet it with the hammer to push it up and out of the hinge assembly.
  • Repeat the method for the end hinge, being cautious to apply upward strain at the door so that the hinge doesn’t bend or warp because of the lack of assist from the lowest hinge. When you’ve got a helper, it is a project that could profit from another set of hands.
  1. Now that the door is free from the frame, vicinity it on a table or set of sawhorses, to ensure that it’s steady and fully supported.
  2. Using your application knife, clear the perimeters of the hole, commencing simply sufficient material to get a clean facet devoid of making the hole unnecessarily larger. Including a mild bevel to the edge of the opening can be beneficial within the later steps, including more floor area for the patching material to adhere to.
  3. Use your needle nostril pliers to remove the bigger bits of wooden that have been removed from the broken area of the door. Don’t worry approximately any small portions falling into the inside of the door; they won’t damage anything.
  4. Take your cardboard and reduce a strip just narrower than the intensity of the door. This would form a barrier that will retain the foaming fabric from spreading into the bigger hollow space in the door. Ensure you reduce your cardboard on one more surface, so you don’t added harm the outside of your door.
  5. Use your needle nose pliers and screwdriver to fit the cardboard strip into the hole, creating a chamber that will comprise the foam. It could take a bit fiddling, yet take your time.
  6. Once your cardboard is seated properly, add your low growth foam. Be careful! A bit little bit of this material goes a long way, and in case you upload too much, it could correctly expand sufficient to crack your door, creating a small issue much bigger.
  7. While your foam starts to expand, take somewhat of overlaying tape and use it to create a frame across the external the hole. This would help retain the foam from sticking to undamaged places of the door and could make the final steps slightly less complicated and your ultimate product cleaner.
  8. Wait on your expanding foam to totally cure. This can take up to four hours.
  9. The foam could have expanded external the hole, forming a bubble of spongy, long lasting material. Taking your utility knife bring to an end the excess material. It is in fact a good idea to dig into the froth a little, creating an indentation that you’ll fill along with your patching material.
  10. Remove the overlaying tape, open your plastic wooden filler and apply it to the broken areas. Spread it calmly along with your popsicle stick, ensuring to utterly fill the distance in order that your patch will be reliable with out air bubbles. Add a little additional filler so, during the sanding process, you can get a smooth, uniform surface that’s flush with the skin of the door.
  11. Wait for the plastic wood filler to dry. This can take numerous hours.
  12. Use your fine-grit sandpaper and observe strain so that you find yourself with a pleasant tender surface on which to use your new coat of paint.
  13. Clean the area with a humid towel to remove any detritus or dirt created by way of the sanding technique and then adequately dry the realm with a paper towel. It is very important follow paint to a clean surface.
  14. Take your flat head paintbrush and follow the paint. One coat should be enough, yet if you’re feeling fancy, a second coat won’t hurt.
  15. Let the paint dry, and it’s time to hang the door returned within the frame.
  16. Reversing the first two steps, area the door within the frame and slide the pin into the hinge assembly; you may or won’t want the hammer to faucet it into place. Repeat with the bottom hinge, and you’re done! Once again, this step may require a helper as it’s important not to bend the hinges or harm the body while putting your door.

Optional Step: Reinforcement

On locations that get a far better level of day-by-day use or are liable to impacts–the bottom of the door, or a particular spot that comes into contact with a bit of furniture – a bolstered “wall guard” could be installed. This is a trick that can be used if you are having to repair the same damaged area of your door on numerous occasions.

Wall guards may be discovered at any domestic development shop and are generally used to guard a wall from the impact of a doorknob while commencing the door. Here we are flipping the function and using the wall look after to guard the door.

Before putting the door back on the hinges, peel off the adhesive strip on the back of the wall guard, location it at the area, wait 30 minutes, and you’re well to go. You have a reinforced area that will never ruin again.

How to Fix Holes and Cracks in Wood Doors

Another typical issue with doorways that property owners come upon is cracks in solid wooden doors, occurring most commonly in outdoors panel doors.

These unsightly cracks are resulting from the inability of the wood panels to obviously extend and agreement with changing temperatures and humidity levels. Layers of lacquer and paint hold the panels in place, and this pressure ends up cracking the wooden at vulnerable points. If left unchecked, those hairline cracks can expand until, eventually, the door’s insulating residences are compromised.

Addressing those hairline cracks is not as rough as many people think: this actual method changed into borrowed from boat developers and will leave you with a water-resistant option to cracked panels in your exterior door.

It is worth noting that, when this technique will expand the life of your door because the paint is still keeping the panels in place, these cracks might maintain to grow, and eventually, your door could have to be replaced altogether.


  • Utility Knife. A standard, an adjustable software knife is an essential tool in this job.
  • Hacksaw Blade. A hacksaw blade or any semi-flexible metallic blade will work during this application.
  • Flat Head Screwdriver. The width of the top isn’t of importance, as you will be using the screwdriver as a packing tool.
  • Putty Knife. Any size putty knife will work here.
  • Paper Towels. These are really for cleaning purposes.
  • Paint Brush. A flat brush is best as you’ll be painting a flat surface.
  • Sandpaper. Fine grit sandpaper will assist smooth your surface for paint.


  • Natural Fiber String. Any thin, cotton, or hemp twine will work; a variety with two or three strands twisted together is best. 3mm is perfect.
  • Elmer’s Glue. The classic adhesive we all know from simple school works incredible here as well.
  • Plastic Wood. Plastic wooden or putty will paintings here, as they’re crack resistant and durable.
  • Paint. A small volume of paint is needed for those jobs, despite the fact do your best to check the existing color except you’re feeling like changing matters up and painting the full door a brand new color.

The Process of Solving Cracks in Good Wood Doors

  1. The first step is to scrub the perimeters of the crack. Utilizing the application knife and hacksaw blade, eliminate any burs or detritus that has built up within the gap. It is important to ensure that the wood of the panels is exposed.
  2. Measure out two portions of string to somewhat longer than the size of the crack. This extra size gives you something to hold onto as you proceed.
  3. Thoroughly soak the first piece of string in the Elmer’s glue, with the intention that it’s completely saturated. You’ll have got to water down the glue whether it is too thick and now not being successfully absorbed.
  4. Use the top of the flathead screwdriver to pack the string into the crack, commencing at the appropriate and dealing your manner down. Be careful not to push the string all of the manner through, out the other aspect of the crack. It’s also important to ensure your panels stay parallel and aren’t being twisted as you pack the string.
    Opening the door so you can easily track both sides is an efficient idea.
    If you find that your string is simply too skinny or too thick for variations in numerous pieces of the crack, you may lightly twist or untwist the top to alter the thickness and get an ideal fit.
  5. Repeat the method with the second one string, as soon as returned being careful to not push the 1st string out the other aspect of the door. This may take a bit of finesse as you desire the ultimate placement to leave a small trough within the hole to permit your putty to lay flush with the panel.
  6. Let the glue harden for countless hours to make sure it is wholly cured.
  7. Once your glue is hardened, wipe the realm with a paper towel to provide the putty a clear surface to bond to.
  8. Use your putty knife to unfold the cloth over the gap, making a soft surface that’s even around the affected area. Permit countless hours for the putty to dry.
  9. Take your fine-grit sandpaper and smooth the area to prepare it for paint.
  10. Paint the world to compare the remainder of the door. Many people select to color the total panel to achieve a extra uniform and regular look.

This procedure works best on painted doors because the stuffed locations will stay noticeable on stained doors. It’s going to achieve an identical results functionally, however it won’t be as pretty.

Final Thoughts

While neither of these initiatives require expert woodworking skills, it is always significant to plot your steps before you begin. Manage all your tools and substances before you begin any cutting, or you’ll uncover yourself walking to the ironmongery shop midway by means of your repair project. Remember the “Five P’s”: Appropriate Making plans Prevents Poor Performance.