Learning how to install an internal door is a rewarding DIY project that can save you hundreds of pounds in fitting costs. With the right tools and this step-by-step guide, you can hang a new door in just a few hours.
Tools You Will Need
- Tape measure
- Pencil
- Spirit level
- Saw (circular or hand saw)
- Wood plane or electric planer
- Chisel set
- Hammer or mallet
- Drill with wood bits
- Screwdriver
- Workbench or sawhorses
Materials Required
- Internal door
- 3x door hinges (76mm recommended)
- Door latch
- Door handles
- Wood screws
- Wood filler (optional)
Step-by-Step Installation Guide
Step 1: Measure the Door Opening
Measure the height and width of your door frame at multiple points. The door should be 2-3mm smaller than the opening on all sides for clearance.
Step 2: Mark and Cut the Door
If your door needs trimming, mark your cut lines with a pencil and straight edge. Score along the line with a sharp knife to prevent splintering, then cut with a saw.
Important: Most doors can only be trimmed by 10-15mm. Check manufacturer guidelines before cutting.
Step 3: Mark Hinge Positions
Standard hinge positions are:
- Top hinge: 150mm from the top
- Bottom hinge: 225mm from the bottom
- Middle hinge: Centred between top and bottom (recommended for heavier doors)
Step 4: Cut Hinge Recesses
Use a chisel to cut recesses for the hinges on both the door edge and frame. The hinge should sit flush with the wood surface.
Step 5: Attach Hinges to Door
Fix the hinges to the door first using the screws provided. Pre-drill pilot holes to prevent splitting.
Step 6: Hang the Door
With help, hold the door in position and mark the hinge positions on the frame. Cut recesses, then attach the other side of each hinge to the frame.
Step 7: Check and Adjust
Open and close the door several times. Use a plane to trim any areas that stick. The door should have even gaps all around.
Step 8: Install Latch and Handles
Mark and drill the holes for your latch and handles. Follow the manufacturer instructions for correct positioning.
Pro Tips
- Work with the door on its side when marking and cutting
- Always use 3 hinges for solid or heavy doors
- Leave a 10mm gap at the bottom for carpeted floors
- Apply a coat of primer to cut edges to prevent moisture absorption
Shop Door Installation Supplies
Find everything you need at Price Cart UK: doors, hinges, handles, and latches. Free UK delivery over £100.