Renewing a door frame - Some simple advice!

The issues surrounding the fitting of a door frame are numerous but not insurmountable, the plan is the key and the difference between an interior door frame and an exterior door frame can be much more than you would think, please read on for further advice.


The issues surrounding the fitting of a door frame are numerous but not insurmountable, the plan is the key and the difference between an interior door frame and an exterior door frame can be much more than you would think.

As usual, and mentioned above planning is eeverything, any joiner or carpenter will tell you that the old adage of measure twice and cut once is how you approach this particular task.

Interior Frame V Exterior Frames - the differences..........

Interior Frames

Most interior door frames are sold as lining kits so they are easy to distirbute and even easier to assemble, they are basically "goal post" in style with a simple lintol (head) and two legs, there are some modern homes that have a threshold (a timber plate) that sits under the door and holds the bottom of the frame legs together.

Exterior Frames

These frames are definitely more complex and varied in construction but we provide a fantastic "universal" frame kit that allows you to fit

  • Just the door to the frame
  • A combination a door with side aperture for glazing as required or for fitting a matching "inset side screen" 
  • The same frame can be used for two side light apertures (or two insets) with a central door 
  • It also suits just a pair of doors without any side screens.

Some measuring and fitting advice may be different if ordering any door frames  with side screens (left, right or both sides of a door) or a door and frame combination,

Measuring the overall frame sizes;

Always check the overall outside sizes of the frame against the overall inside sizes of the frame and choose the correct combination of those sizes to suit the opening and to ensure the frame will go in to the opening, this may involve you ordering a frame that is slightly smaller than the current frame.

Decide if the frame should have a "sill" or "Threshold" and what sizes are required, the difference is that a sill is generally thicker than a threshold and the sill may extend past the frame of legs by a variable amount - you decide.

The sill or threshold may not be advisable or indeed required for lots of older victorian properties where the legs of the frame go below the step at the entrance door and may only require onwe of our Exitex draught excluder products, so in order to drive the point home and as mentioned at the very top of this article...... plan - plan - plan, nothing else is more important than the planning and measuring - joinery work of any kind requires skill but more so it requires common sense.

Now measure the frame breadth; 

The best way to do this? alway start measuring from the inside face to the outside face, you can always add a sub frame or concealed plates to make a frame fit the width or height but it can be very difficult and sometimes impossible to adjust the frame if you have ordered it too big in terms of the sizes from inside to outside across the breadth.

Beware: Do not assume all internal doors or frames in your house are the same size or thickness, check them all.