Before you order and install your new front doors, you need to determine the correct front door size. This is made simple with the following step-by-step instructions. For further information about measuring window accessories and add-ons, please also refer to our downloadable front door measurement guide.

What do you need?

Pen
Paper
Measuring tape
Blueprint, if necessary

Please note: with the person measuring remaining inside, both the inside and outside of the front door should be measured with the dimensions noted in millimetres. Please include any additional front door fittings in your measurements, such as frame extensions, side panels and upper fanlights.

1. Sketch the front door

Please sketch your front door on a piece of paper, indicating the handle's location and opening direction with the tip of a triangle, as displayed in our image. This drawing will be useful again later when it comes to noting down your front door's dimensions.

2. Measure the front door width

Please measure the full width of your wall’s opening, once at the top and once at the bottom. If these measurements differ, please note down the smaller value. A slight installation allowance for the new frame should then be deducted. This will ensure that the new frame fits snugly into the opening.

Example: front door with a width of 1000 mm

► 1000 mm - (2 x 10 mm installation allowance) = 980 mm

3. Measure the front door height

Please measure the full height of your wall’s opening by measuring from its top edge down to the top of the floor. Do this once on the left-hand side and once on the right. If these measurements differ, please note down the smaller value. A slight installation allowance for the new frame should then be deducted.

Example: front door with a height of 2000 mm

► 2000 mm - (2 x 10 mm installation allowance) = 1980 mm