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How to measure your garage door

by John Suddes on 21/08/2015

In this guide we will take you through the steps to identifying the key measurements needed and the structural considerations you need to make before you start the process.  Firstly, there are two ways to fit a sectional garage door, within the opening or behind the opening. Each method has points that need to be considered.

Fitting the door behind the opening

Most garages have been designed to allow sufficient wall space to the sides of the opening to accommodate the door being fitted behind the opening. This is the preferred method as it maximises the drive though width and height.
To fit the door behind the opening to the garage you will need to ensure that you have at least the minimum requirement (80mm) of clear space to either side of the opening to attach the fixings for the door and a minimum of 120mm above the top of the opening.

Fitting the door within the opening

For cases where there isn’t enough space to fit the door behind the opening there is the option of fitting the door within the opening. If you need to fit within the opening please take note that you will lose a minimum of 80mm from each side and 120mm from the top of the opening, this will reduce your drive through space.

Key Measurements

P C Henderson provides made to measure garage doors to ensure a perfect fit for your garage. It is therefore important to ensure that you correctly measure your garage opening. For the design and ordering process you will need some key measurements for the perfect door. These measurements are numbered 1 – 6 on the above diagram.

Full service

For a complete service and peace of mind Henderson Garage Doors always recommend that you purchase survey & installation with your garage door order. This includes a trained professional visiting your home and checking the measurements you entered to ensure that your door will fit correctly as well as the structural elements of your garage.

Henderson Entrematic is part of the SDDE division of Assa Abloy Entrance Systems and is a trading style of P C Henderson Ltd.

Technical data subject to change without notice | © Entrematic Group AB 2019