Comparing door sizes can be perplexing due to the absence of a universal standard door size chart followed by all manufacturers. Various companies offer different door dimensions, and some residences necessitate custom non-standard door sizes. Additionally, the use of both inches and metric sizes further complicates the comparison.
When exploring options for new front and internal doors, it’s helpful to refer to common sizes provided in standard door size charts. It’s crucial to note that, especially in new constructions, there are minimum size requirements for accessibility to dwellings and internal doors to comply with building regulations.
Contents
- What is the Standard Door Width and Height in the UK?
- What is the Standard Size Of An Inside Door?
- Door Width Requirements For Wheelchair Access
- Entrance Door Building Regulations
- Accessibility Considerations for Doors Since 1999
- Standard UK Door Sizes Conversion Chart
- Fire Door Standard Sizes
- Standard Patio Door, Bi-Fold Door, and French Door Sizes
- How to Measure a Door
What is the Standard Door Width and Height in the UK?
In the UK, there is no singular standard door size, but typical door widths in England and Wales are around 2 feet 6 inches (30 inches or 762mm), while in Scotland, they are slightly smaller at approximately 28.5 inches (726mm). Regarding door height, the standard in England and Wales is 6 feet 6 inches (78 inches or 1981mm), whereas in Scotland, it’s a bit taller at 80 inches (2040mm).
What is the Standard Size Of An Inside Door?
For internal doors in new builds, compliance with building regulations, particularly Approved Document Part M, is essential. Different rules apply to properties designated as visitable dwellings (M4(1)), accessible and adaptable dwellings (M4(2)), and wheelchair user dwellings (M4(3)).
Door Width Requirements For Wheelchair Access
In the case of wheelchair access, internal doors in visitable dwellings must have a minimum clear opening of 750mm. It’s important to distinguish between door width and clear opening; for instance, an 826mm wide door will provide a clear opening of 775mm.
Entrance Door Building Regulations
When it comes to new builds, building regulations specify a minimum clear opening width of 775mm for entrance doors, with additional rules for dwellings designed for wheelchair users.
Accessibility Considerations for Doors Since 1999
For entrance doors in dwellings built since 1999, building regulations require a level threshold to ensure accessibility.
Standard UK Door Sizes Conversion Chart
Manufacturers in the UK offer a range of standard door sizes. Everest provides a bespoke made-to-measure service for doors not stocked in standard sizes.
| Imperial Door Size H x W | Imperial Door Size H x W | Metric Door Sizes H x W |
|---|---|---|
| 78 x 18″ | 6’6″ x 1’6″ | 1981 x 457 mm |
| 78 x 21″ | 6’6″ x 1’9″ | 1981 x 533 mm |
| 78 x 24″ | 6’6″ x 2’0″ | 1981 x 610 mm |
| 78 x 27″ | 6’6″ x 2’3″ | 1981 x 686 mm |
| 78 x 28″ | 6’6″ x 2’4″ | 1981 x 711 mm |
| 78 x 30″ | 6’6″ x 2’6″ | 1981 x 762 mm |
| 78 x 33″ | 6’6″ x 2’9″ | 1981 x 838 mm |
| 80¼ x 24⅝” | 6′ 8¼” x 2′ ⅝” | 2040 x 626 mm |
| 80¼ x 28⅝” | 6′ 8¼” x 2′ 4⅝” | 2040 x 726 mm |
| 80¼ x 32½ “ | 6′ 8¼” x 2′ 8½” | 2040 x 826 mm |
Fire Door Standard Sizes
Fire doors come in different sizes, with standard thicknesses of 44mm or 54mm. The door thickness corresponds to fire resistance levels:
- 44mm for 30 minutes (FD 30)
- 54mm for 60 minutes (FD 60)
Standard Patio Door, Bi-Fold Door, and French Door Sizes
- Patio Door Size: The width of sliding patio doors varies from 1180mm to 4800mm, depending on the number of panels.
- Bi-Fold Door Size: External bi-fold doors can be manufactured up to 21 ft, with individual panel sizes up to 1200mm. Everest offers options ranging from a two-panel bifold door at 1800mm wide to a seven-panel door at 6420mm wide.
- French Door Size: Standard widths for French doors are 1200mm, 1500mm, and 1800mm. For French doors with sidelights, widths can extend up to 3000mm.
How to Measure a Door
When measuring a door, consider the following:
- Measure from the inside.
- Measure horizontally from reveal to reveal, brick to brick.
- For vertical measurements, measure from the head reveals down to the bottom of the door, including any door cill built onto the frame. Separate door cills do not need to be measured.
