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The range of Door Frames is large and varied, it includes External Door Frames, Internal Door Frames and Frame Side Lights, we have tried whenever possible to be clear with… Read more


The range of Door Frames is large and varied, it includes External Door Frames, Internal Door Frames and Frame Side Lights, we have tried whenever possible to be clear with regard to the door frame sizes.

A large number of our door frames are made to order, they can therefore be made to virtually any door frame size required, accurate measuring of the door frame sizes is essential in order to avoid unnecessary cutting being required when you fit the door frame. If you have any doubts on how to measure up and select external door frames or internal door frames please take a look at our DIY advice section or contact us if you need further information.

Thruframe Lining kits:

Our latest additions are stocked by us as the UK's sole supplier, this range has been designed by us and features primed and unfinished real oak veneer wraps on mdf cores for supreme stability - supplied oversize, site cutting of leg lengths and lintol width is required. 

The design of the materials is such that we supply a single or double frame Thruframe kit for ANY of our interior doors sizes.............. no matter what.

All Thruframe door products are cut to size upon receipt of order and cannot be cancelled afterwards, they are classed as a bespoke item created and manufactured by to suit your exact door dimensions.

Not only are our Thruframe kits more flexible the prices are lower for what is a much improved frame section size, the sections (legs and lintels) are all either 108x30mm or 133x30mm depending or your choice and are supplied with small loose stops for using with any door thickness, the lintel is supplied ready for any chosen joint or simple butting at the legs to accommodate all door widths.

Door Frame Sizes - How to Measure for a Door Frame:

As with any aspect of fitting a Door Frame it is important to plan properly and take inside sizes and outside sizes of the door frame, these should be the overall sizes and don't forget the breadth of the frame from inside to outside, at all times it is advisable to check whether a timber threshold or cill is required, this threshold or cill is the part of the door frame that sits below the door but above the stone or concrete step, however not all external door frames have these fitted, some doors simply have an aluminium threshold or wait for it.......nothing, the latter situation will undoubtedly lead to draughts and rain penetration, not ideal or necessary.

All external doors and frames can easily be replaced but the old carpenters adage of "Measure twice and cut once" has never been more advisable in this process of door frame measuring.

Always allow 5mm or more from each side and the top of the frame sizes for "fitting tolerances" to avoid the frame being so tight within the opening that it becomes impossible to square the frame properly.

Some Door Frame info........

A door frame's overall height is the size of the Door Frame from the furthest point on the left to the furthest point on the right and from the lowest point to the highest point.

The door frame's breadth is the dimension from the inside (of the house or room) to the outside, this varies greatly dependant on the year of construction but we can make virtually any size of Door Frame.

A Door Frame threshold is generally a flat piece of timber which is normally the same breadth as the Door Frame, from inside to outside and anything between 10mm and 25mm thick.

A Door Frame cill is normally thicker than the Door Frame threshold, the cill is anything from 25mm to 55mm thick and can be the same breadth, from inside to outside or allow it to project past the outer face of the Door Frame by anything from 20mm to 90mm, the reason for this projection is to help shed any water away from the Door Frame or to cover any concrete or brick step.

Please be aware that on all exterior door frames you must ensure the Door Frame cill or threshold will be thick enough to allow the door to open in without fouling the step.  Some homes are built in such a way that the Door Frame cill actually sits lower than the interior floor level and also the Door Frame lintol can sit above the inside level of the plasterwork.  We normally fit a weather bar on top of any exterior door frame cill or threshold to help with draught proofing.  

Handing of a door and frame - What is Handing?

All exterior door frames must be viewed from outside, you must therefore choose the correct "handing", e.g.; make sure you choose to have the hinges fitted on the correct side, the terms are "Viewed outside hinged left - Opening in" or "Viewed outside hinged right - Opening in" and with doors opening out you use the same terms BUT mention "Opens Out", the same care must be taken and applies so that glass apertures are on the correct side (left or right) of the frame where a frame has this requirement and always when viewed from outside, the chosen image/frame type will override any subsequent notes that you add to your order as far as the "handing" is concerned.

Any doubts, ask for advice.

Upvc front doors and frames or Upvc rear doors and frames - Helpful diy tips!

Upvc front doors and frames need the same care in relation to handing, just be aware that upvc external doors are always supplied with their own upvc frame but may need some form of timber sub-frame that is then clad with upvc facings when the door / frame is fitted.

Internal door frames:

Interior door frames are slightly different from the exterior door frames in that they don't have cills but may have thresholds. The older the property the more likely it is that the door frames will not have a threshold.

Remember to take a total of 6mm from the door frame's width and height to give some fitting tolerances. It is not uncommon to have to make the door frames smaller to ensure they can fit; any resulting cavity can then be concealed with facings.

Just let your imagination wander, think of what you really want for your front door set or back door set and we can probably create it, the choice of oak or hardwood, with glass or just panels, lots of frame sizes and expert staff to help you along the way.