How to Fix Door Crack

A cracked door can be an eyesore that disrupts the aesthetic harmony of your home’s interior. More importantly, it might compromise the safety and security of your living space. But worry not – you needn’t replace the whole door immediately.

How to Fix Door Crack

With some handy skills and the right tools, you can fix it yourself! Welcome to our comprehensive guide on “How to Fix a Door Crack.” By the end of this blog post, you’ll be equipped with the knowledge you need to restore your door to its former glory how to fix door crack, maintain your home’s charm, and ensure its security. So, let’s roll up our sleeves and get started!

Identifying the Problem

The first step in any repair process is identifying the problem. In this case, you need to examine the crack on your door. Understanding the extent and nature of the damage will help you decide the best way forward.

Look at the size of the crack, its location, and the type of door you’re dealing with. Is the crack small, or does it run along the length of the door?

Is it on the edge or right in the middle? Is your door made of solid wood, plywood, or another material? These are all crucial factors to consider. Remember, correctly identifying the problem is half the solution!

Preparing for Repairs

After identifying the size, location, and type of crack, it’s time to prepare for repair. Start by assembling the necessary tools and materials. Typically, for minor to moderate door cracks, you’ll need wood filler or putty, a putty knife, sandpaper, primer, and paint that matches your door color.

How to Fix Door Crack

Make sure your workspace is well-ventilated and lit. Remove any loose or splintered wood from the crack using your hands or a small tool. Then, clean the area around the crack to ensure there’s no dust or grease that could prevent the filler from adhering properly. With these preparations, you are now ready to start the repair process.

7 Step-By-Step Guide on How to Fix Door Crack

Step 1: Apply the Wood Filler

The first step is to fill in the crack with wood filler. For this, you can use either a ready-made filler or a mixture of sawdust and carpenter’s glue. Apply it using a putty knife, filling up the crack completely and making sure there are no air bubbles left behind. Let it sit for about 30 minutes until it is completely dry.

Step 2: Sand the Filled Area

Once the wood filler has dried up, take some sandpaper and sand the area to make it as smooth and even as possible. Make sure there are no excess protrusions of the filler that could affect the door’s functionality or aesthetic.

Step 3: Prime the Repaired Area

Now, take some primer and apply it to the area you just filled. This is important as it will protect your door from moisture damage and ensure that the paint adheres to the surface properly. Let the primer dry for about 30 minutes before proceeding further.

Step 4: Paint the Door

Once the primer has dried up, take some paint that matches your door’s color and apply a thin layer. Let it dry for about an hour before proceeding with the next step.

Step 5: Apply Another Coat of Paint

Once the first coat has dried up, apply another coat of paint to ensure an even finish.

Step 6: Let It Fully Cure

How to Fix Door Crack

Once you have applied two even coats of paint, it’s time to let the door cure. This typically takes about a day or two. During this period, avoid touching the door and keep it away from dust and dirt as much as possible.

Step 7: Enjoy Your Repaired Door!

After 24 hours, your door should be ready to use. With that, you can now enjoy the fruits of your labor – a repaired door that looks and functions as good as new!

Following these steps, you’ll be able to effectively fix minor to moderate door cracks without having to call a professional or replace the whole door. All it takes is some handy skills and the right materials. So get your toolbox ready, roll up your sleeves, and take on this DIY project with confidence!

Common Mistakes to Avoid During Door Repair

When embarking on a DIY door repair project, it’s crucial to be mindful of potential mistakes to ensure a successful outcome. Here are some common pitfalls to steer clear of:

Not Preparing the Work Area:

The first common mistake is to prepare the work area properly. Always clear the space around the door before starting your repair. This not only helps you work more efficiently, but it also protects your belongings from dust and debris.

Skipping the Cleaning Step:

Many people need to complete the cleaning step. Always clean the area around the crack before applying the filler to ensure a strong adhesion between the filler and the door’s surface.

Not Allowing Enough Drying Time:

Patience is key in door repair. Each stage of the repair process, from drying the filler to allowing the paint to cure, needs its due time. Rushing these processes could result in an uneven or unstable repair.

Applying Too Much Filler:

Applying too much filler at once can lead to shrinkage and subsequent cracking. It’s better to apply multiple thin layers of filler, allowing each one to dry thoroughly before applying the next.

Not Priming Before Painting:

Please prime before painting can result in uneven color and poor adhesion of the paint. Always apply a primer to the filled area before painting to ensure a smooth, long-lasting finish.

By avoiding these common mistakes, you can ensure a successful door repair project that not only enhances the appearance of your door but also extends its lifespan.

Different Ways You Can Fix a Door Crack: Wood Filler vs. Putty

When it comes to fixing a door crack, the primary materials you can use are wood filler or putty. Each has its advantages and suitable use cases.

Wood Filler

How to Fix Door Crack

Wood filler is a perfect choice for filling cracks in wooden doors. It’s a blend of wood fibers and adhesive, which, when dried, can be sanded smooth and painted over. Wood filler is designed to mimic the properties of wood, so it shrinks and expands with the wood during temperature changes. This makes it ideal for larger, deeper cracks or holes. However, it can be harder to work with as it dries quickly, and you need to ensure you’re applying it as smoothly and swiftly as possible.


Putty, on the other hand, is more flexible and slower drying, which makes it easier to work with, especially for beginners. It’s a good choice for smaller, shallower cracks and for repairs that won’t be subjected to a lot of stress. However, wood filler is stronger than putty and might not hold up as well over time, especially in larger, deeper repairs. It also tends to take something other than stain as well as wood filler, so for stained doors, wood filler is generally a better choice.

In conclusion, the material you choose to repair a door crack depends on the size and depth of the crack, the type of finish on the door, and your level of expertise. Both wood filler and putty have their merits, and understanding when to use each can ensure a successful door repair.

Tips for Maintaining Door Integrity After Repair

After successfully repairing your door, the task doesn’t stop there; maintaining its integrity is just as crucial. Here are some tips to help keep your door in top shape:

Regular Inspection:

Regularly inspect your door for any signs of damage or wear. This can help you catch minor issues before they become more significant problems. Watch out for things like peeling paint, cracks in the wood, or loose hinges.


Keep your door clean by wiping it down with a damp cloth regularly. For heavy dirt or stains, a mild detergent or wood cleaning product can be used. Remember to dry the door thoroughly after cleaning to prevent moisture damage.


If your door is exposed to the elements, consider weatherproofing. This could involve applying a sealant to protect the wood from moisture, applying weatherstripping to seal gaps and prevent drafts, or installing a storm door for additional protection.

Regular Painting or Staining:

Repainting or restaining your door regularly not only keeps it looking good but also adds an extra layer of protection against weather, wear, and tear. Be sure to prepare the surface properly before painting or staining, and always use high-quality products.

Tighten Loose Hardware:

Over time, screws in your door’s hardware may become loose, leading to sagging doors or ineffective latches. Regularly check the screws in the hinges, doorknob, and latch, and tighten them as necessary.

By following these maintenance tips, you can help ensure that your repaired door stays in excellent condition for years to come.


In conclusion, door repair only sometimes necessitates a professional or replacement of the entire door. With a bit of time, the right tools, and following the steps we’ve discussed in this post, anyone can effectively fix a cracked door. Whether you opt for wood filler or putty, the choice ultimately hinges on the nature of the crack, the door’s finish, and your skill level.

Remember, that repairing the door is just the first step; maintenance is crucial for preserving your door’s longevity. Remember to regularly inspect, clean, weatherproof, repaint or restain, and tighten loose hardware on your door.

By avoiding common mistakes, making informed repair decisions, and adopting good maintenance habits, you can extend the lifespan of your door significantly. Thanks for reading this article about how to fix door crack.

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