How To Install An Interior Door – A Step By Step Guide

Install An Interior Door

Whether you’re replacing an old door or putting in a new one, setting up an interior door is a project that needs you to pay attention to detail and plan well. In this helpful guide, we’ll walk you through each step so you know exactly what to do. That’s why we made this step-by-step guide that will help you. So, roll up your sleeves, grab your tools, and let’s start changing up your interior space—one door at a time.

Before you begin, make sure you have all the necessary tools and materials on hand:

  • Interior door
  • Measuring tape
  • Pencil
  • Screwdriver
  • Hammer
  • Level
  • Shims
  • Wood screws
  • Hinges
  • Door knob and hardware
  • Wood putty
  • Sandpaper
  • Paint or stain (optional)


Begin by measuring the height and width of the door opening, because these measurements will help you figure out the right size for the new door. If you’re swapping out an old door, take it off along with the hinges, but also pay close attention to any problems or damage in the door frame.

After you’re finished with that, make sure the door opening is square and level. Use a level to check if the frame is even and flat. If it’s not, use shims to make adjustments and make sure that everything is straight and in line. This step is crucial for the door to fit properly and work smoothly. Don’t rush through it—take your time to get it right.


Now, it’s time to attach the hinges and make your door ready for practical use.. Begin by gently placing the door in the opening, using shims to keep the door at the right height. Then, carefully fasten the hinges to the door frame using wood screws, making sure they’re spaced evenly and aligned just right. To ensure everything stays straight and level, use a trusty level to double-check the door’s alignment and adjust the shims if needed.

If you’re confident that the hinges are securely attached to the frame then it’s time to match them up with the corresponding mortises on the door itself. With precision and care, you have to secure the hinges to the door using screws, always making sure they sit flush with the surface. This step is crucial for the smooth operation of your door, guaranteeing it swings open and also closes with ease.


Now it’s time to install the door knob and other hardware as per the instructions provided by the manufacturer. Start by using a drill to create holes for the door knob and latch mechanism, always making sure they’re aligned and centered on the door.

With precision, attach the door knob and latch mechanism to the door using screws, ensuring they’re securely fastened. Take a moment to test the door knob to ensure smooth operation and secure latching. This step ensures that your door not only looks complete but also functions seamlessly, providing easy access and security to your space. Pay attention to the details, and you’ll soon have a door that adds both beauty and practicality to your home.


After installing the door knob and hardware, it’s time to put your door to the test. Gently open and close the door to check for smooth operation. Take note of any gaps or misalignments in the door frame.

If you notice any issues such as sticking or rubbing against the frame, don’t worry. It’s common for adjustments to be needed. You can use shims or sandpaper to make any necessary tweaks. For instance, if the door is sticking, carefully use a plane or sandpaper to trim the edges until it fits properly.

Ensure that the door closes snugly and latches securely without any resistance. This final step ensures that your door functions seamlessly, providing both ease of use and security for your home. By paying attention to these details, you’ll achieve a professionally installed door that enhances the functionality and aesthetics of your space.


In the last step, it’s time to give your door the finishing touches. Begin by filling any visible screw holes or gaps in the door frame with wood putty. Smooth out the surface with sandpaper for a seamless finish.

After you’re finished with that, apply a coat of paint or stain to match the surrounding decor of your home. Allow the paint or stain to dry completely before using the door.

This final step is very important because it also protects your door from wear and tear. With the finishing touches complete, your newly installed interior door is ready to be admired and enjoyed for years to come..

We hope this step-by-step guide has been helpful in guiding you through the process of installing an interior door. With careful attention to detail and the right tools, you can successfully install an interior door and enjoy the beauty but also the functionality of your new door.

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