What is a standard door size?

timber front door

External and internal UK standard door sizes explained

Thanks to advances in design technology and architectural trends, a variety of standard door sizes are available to homeowners right across the country. Offering a snapshot into an owner’s unique sense of style, security and thermal efficiency go hand in hand with high-quality door systems of today.

Once you’ve picked the style and type of front or back door, what’s next?…

What is the standard front door size in England?

Set out by the International Residential Code (IRC), primary doors in England are required to be at least 2032mm tall (80 inches or 6 ft 6”) by 914.4mm (36 inches or 3 ft).

What is a standard internal door size in England?

composite doorsThe average internal door size in England is often referred to as a 2’6” door, which is 1981mm x 762mm x 35mm.

What is a standard fire door size in England?

Escape routes should be no less than 750mm wide or no less than 900mm where wheelchair access is required. The most commonly used fire doors are FD30 (30-minute fire resistance) which must be at least 45mm thick and FD60 (60-minute), which are normally 54mm thick.

Full information on fire door safety is available via the Fire Safety Advice Centre.

Transform your Hertfordshire or Middlesex home with a stylish new front door

At Chase Windows, we are not confined by size which allows us to create a wide range of bespoke front and back doors in a variety of proportions, materials and styles. We’re also very aware that different era’s of property will feature doors that vary in shape and size. From timeless timber to efficient uPVC and contemporary aluminium to durable composite doors, we have styles and designs to suit all South East homes.

Residential front doorsNotably heightening kerb appeal, by giving your homes’ exterior a new lease of life you can even increase its value by up to 10%. With this in mind, we invite you to visit our local showroom to get a feel for our high-quality door products, get an instant online quote or request a callback to discuss your options further.

Related to this topic:
What is the standard size for a sliding glass door?

Composite doors vs aluminium doors – which is stronger?

Sunflex vs Schüco bi-fold doors: Which is best?


Over 11,000sq ft of space with of 6000 sq ft of purpose built showrooms, one of the largest home improvement showrooms in the North London, Hertfordshire and surrounding counties. With state of the art displays and kids area all under one roof.

Opening Hours: Monday – Friday 09:00 – 17:00 Saturday 10:00 – 16:00 Sunday 10:00 – 13:00


Smaller showroom with limited range available but good for client convenience.

Opening Hours: Monday – Friday 13:00 – 17:00 Saturday 10:00 – 16:00 Sunday By Appointment Only

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Hoddesdon, Herts
EN11 0BZ

189 Chase Side
Enfield, Middlesex

Tel: 0208 366 6500


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