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How To Fit A Sliding Door

Sliding Door Installation - How to Fit a Sliding Door in 6 Easy Steps

Sliding doors are a type of door that operates by sliding horizontally along a track system, rather than swinging open and closed. These doors are typically made of large glass panels framed in materials such as wood, aluminium, or vinyl. Sliding doors are known for their sleek and modern appearance, allowing ample natural light into a space while offering unobstructed views of the outdoors.

These doors are commonly used as patio doors, room dividers, or even entrance doors in some cases. Sliding doors are favoured for their space-saving design and ease of use, as they glide smoothly along the tracks, requiring minimal effort to open or close. Their versatility, aesthetic appeal, and practicality have made sliding doors a popular choice among homeowners and architects alike.

If you're considering installing a sliding door in your home, you'll be pleased to know that it can be a straightforward and rewarding DIY project. 

In this article, we will guide you through the easy steps of fitting a sliding door. Before you begin the installation process, make sure you have all the tools and materials required. 

Tools and Materials Needed

You will need -

  • Door Tracks
  • Door Panels
  • Rollers
  • Tape Measure
  • Screwdriver
  • Spirit Level
  • Drill
  • Pencil
  • Safety Goggles
  • An extra pair of hands (optional)

6 Steps to Install Sliding Doors

After gathering all the necessary tools and materials, let us take a look at the steps for installing sliding doors.

Step 1: Measure and Prepare the Opening

Accurate measurements are crucial for a successful sliding door installation. With the help of a measuring tape, measure the width and height of the doorway opening, ensuring you have enough clearance for the sliding door to operate smoothly. Take multiple measurements at different points to account for any variations. Make note of any obstructions, such as light switches or electrical outlets, that may need to be relocated or adjusted.

Once you have the measurements, make necessary adjustments to the existing door opening, ensuring it is plumb and level. Remove any obstructions, trim, or old wood door frames that may interfere with the installation process.

Step 2: Install the Bottom Track

Using the pencil and measuring tape, mark the location where the track will be installed. Ensure the track is level by using a spirit level. Once you're satisfied with the floor level positioning, drill pilot and screw holes into the floor and attach the track using the screws.

Step 3: Mount the Top Track

In a similar manner to installing the bottom track, measure and mark the location for installing the top track. Again, use the spirit level to ensure it is level. The top track may need additional support, especially if the bottom sill of doorway opening is wider. Check the manufacturer's instructions for guidance on additional brackets or supports.

Step 4: Attach the Door Panels

To attach the door panels, slide the rollers into the pre-installed tracks and adjust them until they move smoothly. Lift the door panels and carefully insert them into the top track. Then, tilt the bottom of the panels inward and fit them into the bottom track. Double-check the level of the panels and make any necessary adjustments.

Step 5: Test & Adjust the Sliding Door

After completing the installation, test the sliding door to ensure it operates smoothly and effortlessly. Open and close the door several times to make sure it glides along the tracks without any obstructions or jams. Adjust the rollers if necessary to achieve optimal functionality. Make any necessary adjustments to ensure smooth sliding motion.

Step 6: Give Finishing Touch

Lastly, make any finishing touches required to complete the door installation. Inspect the door and tracks for any visible gaps or misalignments. Use caulking or weatherstripping to fill and seal any gaps, providing insulation and enhancing energy efficiency. Also, consider adding a new door handle or lock mechanism according to your preferences and security needs.

Safety Tips

Always take proper safety measures before starting any such project - 

  • Wear appropriate safety gear, such as goggles and gloves, when working with tools.
  • Take precautions to avoid injury, such as ensuring the door panels are adequately supported during installation.
  • Follow the manufacturer's instructions and guidelines.


Fitting a sliding door can be a rewarding DIY project that adds aesthetic appeal and functionality to your living space. By following these easy steps, you can successfully install a sliding door in your home. 

However, if you don’t want to go through all this hassle, you can simply purchase new sliding doors for your home. Choose from Emerald Door’s wide range of Internal doors and External doors collection.

FAQs on Sliding Door Installation

  • Are sliding doors easy to install?

Yes, sliding doors are generally considered easy to install. With the right tools and following the manufacturer's instructions, you can successfully install sliding doors. However, it is important to ensure accurate measurements, proper alignment, and attention to detail to achieve a smooth and secure installation.
  • Do all sliding doors need bottom track?

No, not all sliding doors require a bottom track. While most sliding doors have a bottom track to provide stability and support, there are alternative systems available, such as top-hung or suspended sliding doors, that do not require a bottom track. These systems rely on overhead tracks or guides to support the doors.
  • How do you adjust a sliding door gap?

To adjust a sliding door gap, determine if the gap is on the top or bottom of the front door frame. If it's on the top, adjust the rollers by turning the adjustment screws. If the gap is at the bottom of the door frame, adjust the height of the door by turning the screws on the bottom rollers. Test the door after each adjustment until the desired gap is achieved.



Shabana Kauser is the dynamic owner of Emerald Doors, the famous door-selling company in the UK with immense knowledge and experience in working with architecture, interior design, and home decor. She continues to share tips and technical know-how of balancing interior elements, door fittings, room aesthetics, and the like. Personally, she loves coffee, always dabbling with several blends.

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.