Measuring up your garage doors

Garage doors are usually mounted to the rear face of the garage structure and do not require a frame. To identify the size of door that you need simply measure the dimensions in the diagram below - the opening does not have to be true or square - you can even have an arched opening.

However they can be positioned between brickwork opening where increased depth in the garage is required. Headroom clearance is an important factor in deciding where the door can go.

Door sizes are always quoted WIDTH x HEIGHT and are sold to be bigger than the opening size, i.e. a 7' x 6'6" door will actually be approximately 180mm wider and 100mm higher so that it fits around a 7' x 6'6" opening.

Will it fit? Door space constraints:

Detailed specification for roller and sectional doors are available but not published as they vary depending on the door size and type.

Call your nearest branch for further information.

Notes:
Figures in brackets refers to doors wider than 10 or 12' (varies with manufacturer).
Sectional doors add 40mm to dimension B if fitting an automatic opener.
Roller doors add 100mm to one side (dimension C) if fitting an automatic opener (varies with manufacturer)

If you wish to replace your existing frame or simply fit a pre-framed door to your existing brick opening you can identify the size of door that you need by simply measuring the dimensions in the following diagram. Check the dimensions at various points to ensure consistency and verify thediagonal dimensions to ensure the frame is square (the two dimensions should be the same).

Door sizes are always quoted WIDTH x HEIGHT and are sold to fit the opening size, i.e. a 7' x 6'6" door will actually be slightly smaller so that it fits into a 7' x 6'6" opening with the necessary clearances.

Pre-framed doors may be mounted within the opening or mounted on the rear face of the garage structure to give a little more flexibility. If mounted to the rear face a frame to brick overlap of approximately 50mm is required.