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How to fit an Internal Door

How to fit an Internal Door

According to latest research, over 71 per cent of British males do not own a tool box or at least two power tools. As British homeowners are currently being dubbed as the ‘less-skilled generation’, they are increasingly turning to professional contractors to complete their everyday DIY tasks.

From removing radiators to wiring plugs, builders are having to complete a wide range of tasks that were traditionally accomplished by the homeowner. As the self build market continues to increase in popularity, currently comprising between 7-10% of all UK property constructions, many individuals are designing and leading the build of their own homes, but do not possess the skills to complete the build themselves.

Installers are therefore having to work on larger scale projects, such as the completion of an entire house rather than a single room, forcing them to specialise in a wider range of skills.

Tasks such as hanging internal doors can prove impossible for homeowners, primarily as such a large number are required throughout the home but also because they do not have the time or capability to install them. As they turn to professionals to complete these jobs, there are some things installers need to consider, so below are our top tips to fit a door:


Tools needed

  • Screwdriver
  • Pencil
  • Hammer
  • Drill/driver and bits
  • Safety glasses
  • Tape measure
  • Chisel
  • Saw
  • Plane


Cheshire Mouldings supplies interior doors in four different sizes – 610mm, 686mm, 767mm and 838mm, all in keeping with standard door sizes. This means the doors are designed to fit a standard door frame and therefore only a small amount may need to be trimmed off the height and edges in order for them to fit. (Always check the instructions that come with the doors before starting).

If replacing a door, then use the same sized hinges and position in the same place as previously used.

Step 1

Remove the old door

Remove the old door in the first instance. The aim is to replace the existing door, with a new door of the same thickness. If the door thickness is different, the doorstop position will need to be changed.

Step 2

Photo of Door

Position the new door in the door frame. If the doors are too big, mark the top of the door frame on the door height. Transfer this measurement to the bottom of the door and add 3mm taking into account the finished level of the floor. Draw a straight line across the door on both sides and depending on the amount to be removed either saw or plane off.

Step 3

Cut the Door

Position the new door back in the frame again and this time check the width. There should be 3mm gaps along both sides. If the door is too big mark the door to the required size and reduce both sides equally using a plane.

Step 4

Reposition the Door

Reposition the new door in the frame and mark the exact position of the old hinges onto the new door edge, ensuring there is a 3mm gap around all sides.

Step 5

Mark the hinges

Next lay the door on its side and use the marks to position the hinges. Draw round the hinges and also mark the hinge thickness on the front edge of the door as well. Alternatively, rather than making hinge markings as in Step 4, the old door can be laid down next to the new door and the hinge position can be transferred across as in the picture above.

Step 6

Make space for the hinges

Once the markings for the hinges are in place, use a chisel to cut along the pencil markings.

Step 7

Chisel out the space

Make several cuts 5mm apart in the marked hinge area as this stops the wood from splitting. Use the chisel flat side down and tap it to remove the wood from the new hinge recess.

Step 8

Attach the hinges

Once all the wood is removed from the hinge recess area, hold each hinge in place and mark screw holes using a drill. A 2-3mm bit is ideal for this.

Step 9

Screw the hinges

Screw the hinges in place on the doors.

Step 10

Screw hinge into the wall

Fit the other half of the hinge in the existing hinge marks on the door frame and screw into place. Get someone to hold the door in place whilst the hinges are screwed into place. If the same hinge positions are not being used, the standard positioning on a door edge are 15cm down from the top and 22.5cm up from the bottom.

Step 11

Fitted Door

Once the door is hung, it’s now time to add on door handles and catches.

To support housebuilders in achieving the highest quality and long lasting finish at the most attractive price, timber manufacturers, including Cheshire Mouldings, are increasingly designing and manufacturing a diverse range of competitively priced internal doors.

Cheshire Moulding’s doors are of an engineered construction utilising genuine American A grade white Oak veneers, lippings and mouldings, providing a resistance to variances in temperature that prevents bowing, warping or splitting. The material also offers unrivalled noise reduction and insulation benefits, making it one of the most attractive solutions available to installers completing new and self build constructions.

Responsibly sourced and constructed from the highest quality timber, Cheshire’s engineered Oak doors have been designed to offer quick and easy installation throughout an entire property. To suit both classical and contemporary interiors, Cheshire’s Abbotsfield Full Boarded range features a Full Boarded Oak Door and matching Clear Bevel Glazed Oak Door.

If homeowners are looking for a more contemporary finish, the Cheshire Four Panel Shaker range and Modernus five panel range are available in both complete timber and Glazed panel options, reflecting the current industry trend for light oaks and complementing glass additions.

Cheshire Mouldings is one of the UK’s leading timber manufacturers, including stairparts, decking, mouldings, internal doors, joinery and stair cladding. Recently ISO 9001:2015 certified, the manufacturer provides the highest quality products and after-sales support, with exclusive online resources including installation information and videos.

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