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How To Fit an Internal Door

How To Fit an Internal Door: A Step-by-Step Guide

Internal doors, also known as interior doors, are doors that are used to separate different areas or rooms within a building. Unlike external doors, which are designed to provide security and protection from the elements, internal doors serve to define spaces and provide privacy within a structure.

Internal doors can be made from various materials such as wood, glass, or composite materials and come in a wide range of styles and designs to suit different aesthetic preferences. They are commonly found in residential homes, offices, commercial buildings, and other structures where compartmentalization and privacy are desired.

Installing an internal door can be a rewarding and relatively straightforward home improvement project. Whether you're replacing an old door or adding a new one, fitting an internal door can enhance the aesthetics and functionality of your space. With a few essential tools and some basic carpentry skills, you can successfully install an internal door yourself. 

In this article, we will guide you through the step-by-step instructions for fitting an internal door.

Tools & Materials Required

To fit an internal door, you'll need the following tools and materials: 

  • Tape Measure
  • Hinges 
  • Screw Driver
  • Chisel
  • Hammer
  • Wood Plane
  • Drill
  • Screws
  • Safety Goggles

8 Steps on How to Fit an Internal Door

Let us look at all the steps in detail to fit an internal door.

Step 1: Take Accurate Measurements

The first step is to measure the dimensions of your door frame accurately. Measure the width and height of the existing frame, ensuring that you take three measurements at different points to account for any irregularities. Once you have the correct measurements, purchase a door that fits snugly within the existing frame. Standard door sizes are usually 80 inches in height and come in various widths. You can buy pre-hung doors, which come with the door frame and hinges already attached, or you can install the hinges yourself.

Step 2: Remove the Old Door

If you're replacing an existing door, start by removing it from the frame. Unscrew the existing hinges from both the door and the frame, and carefully lift the door out. Take note of the hinge locations on the frame as you will need them for installing the new door. This step might require an extra set of hands, especially if the door is heavy.

Step 3: Trim the Door to Fit in the Frame

Lay the new door flat on a pair of sawhorses or sturdy workbenches. If the door is larger than the frame, you may need to trim it to fit. Measure and mark the excess amount to be removed, ensuring that you maintain an even gap around all sides of the door. Use a straightedge and a pencil to draw a cutting line. Then, using a wood plane or a circular saw, carefully trim the door along the marked line. Wear safety goggles to avoid dust entering your eyes. Smooth out any rough edges with sandpaper.

Step 4: Mark the Hinge Locations

With the door still on the sawhorses, mark the locations for the hinges. Measure and mark the hinge plate positions on the edge of the door, ensuring that they align with the hinge positions on the door frame. Use a chisel and hammer to carefully create shallow mortises (recessed areas) on the door's edge to accommodate the hinges. The depth of the mortise should be equal to the thickness of the hinge plate. Test the fit of the hinges by placing them into the mortises.

Step 5: Install the Hinges

Secure the hinges to the door with screws, making sure they are flush with the door's edge. Then, attach the hinges to the door frame using the existing hinge locations or the marks you made earlier. Ensure that the hinges are properly aligned and securely fastened.

Step 6: Hang the Door

With the hinges in place, lift the door and carefully fit the hinge knuckles together, aligning the hinge pins. Slowly lower the door into the frame, checking for even spacing around all sides. Have a helper hold the door in place while you insert the hinge pins and check that the door swings freely. Make any necessary adjustments to ensure that the door hangs properly.

Step 7: Install the Door Handle and Latch

Once the door is hanging correctly, mark the height for the door handle and latch on the door and frame. Drill the necessary holes for the handle and latch, following the manufacturer's instructions. Install the handle and latch according to the manufacturer's guidelines, using the provided screws and hardware.

After installing the handle and latch, test the door to ensure it opens and closes properly and smoothly. Make any necessary adjustments to the hinges, latch, or strike plate to achieve a proper fit. Check that the door sits flush with the frame and seals properly.

Finally, add any finishing touches to complete the installation. This may include painting or staining the door, adding weatherstripping to excess wood to improve insulation, or installing a doorstop to prevent the door from slamming.

How to Maintain an Internal Door

Maintaining an internal door is essential for both its functionality and aesthetic appeal. Here are some tips on how to keep your internal doors in excellent condition.

  • Regularly clean the door surfaces using a soft cloth or sponge and a mild cleaning solution, avoiding harsh chemicals that could damage the finish. Wipe away any dust, dirt, or smudges, paying particular attention to the edges and handles.
  • Check the hinges and screws periodically to ensure they are secure and tighten them if necessary. Lubricating the hinges with a silicone-based lubricant will also help them operate smoothly.
  • Inspect the door for any signs of damage, such as scratches, dents, or chips, and address them promptly. For minor imperfections, you can touch up the paint or use a suitable wood filler to repair larger damages.
  • Avoid slamming the door, as it can strain the hinges and lead to misalignment. Encourage gentle handling to prolong the lifespan of your internal door.

By following these maintenance practices, you can preserve the beauty and functionality of your internal doors for years to come.

Final Thoughts

Fitting an internal door may seem like a daunting task, but with the right tools and a step-by-step approach, it can be a manageable DIY project. Whether you're replacing an old door or installing a new one, this guide will take you through the necessary steps to fit an internal door and achieve a professional-looking result.

If you don’t want to fit an internal door all by yourself, you can purchase a new one. Invest in Emerald Doors’ high quality internal doors.

FAQs on How to Fit an Internal Door

  • How many hinges do you need on an internal door? 

Typically, an internal door requires three hinges for proper support and stability. These hinges are evenly spaced, with the top hinge positioned approximately 7 inches from the top of the door, the middle hinge in the center, and the bottom hinge approximately 11 inches from the bottom of the door.

  • What is the best type of hinge for an interior door? 

The best type of hinge for an interior door is generally a standard butt hinge. Butt door hinges are durable, reliable, and widely used for their simplicity and functionality. They are available in various sizes and finishes to match the door and complement the overall aesthetic of the interior.

  • Can I fit an internal door myself?

Yes, it is possible to fit an internal door yourself if you have basic DIY skills and the necessary tools. However, it can be a complex task, and professional assistance is recommended for optimal results. It's crucial to ensure the door is properly aligned, level, and securely installed for smooth operation.

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Author: Shabana kauser

Shabana Kauser, the Director of Emerald Doors, brings over 20 years of invaluable expertise in the door industry. Her visionary leadership has steered the company to new heights, offering an extensive range of internal and external doors while prioritizing quality and customer satisfaction. The website's glowing reviews stand as a testament to her commitment to excellence. To learn more about Emerald Doors, connect with us on Instagram, Facebook, Twitter, and Pinterest.

Posted on July 20, 2023
SHABANA KAUSER
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