Composite Door Measuring Guide

When ordering your new composite doors, the width and height measurements will need to be confirmed. Below we have detailed a simple measuring guide for you to follow.

If you need any help in checking the door dimensions for your order, our team are happy to help. For peace of mind when ordering if you are unsure about the measurement details, we recommend you consult a professional door installer.

These measuring guides are provided in good faith. Just Doors & Conservatories accept no responsibility for any errors arising from the measuring and ordering of products.

How to Measure for Composite Doors

The measurements for height and width must be taken from the outside. You need to measure against the brickwork opening. Do not include the old door frame or current door.

For the height and width, you should measure from brick to brick in at least three different points. If all three measurements are not the same, use the smallest of the three when placing your order. The final dimensions need to have 10mm deducted from them to enable a smooth fit. Once the new door is in place, packers and silicone are used to fill any gaps and to secure the frame.

Composite Doors Measuring Guide Check List

• Measure from the outside in at least three different places for both height and width
• Note down dimensions as metric (mm)
• Select the smallest measurement for height and width
• Deduct 10mm off both the height and width final measurement for fitting allowance
• Ensure measurements include the frame, sill and any other extensions required
• Check your measurements at least twice making sure the frame size is smaller than the brickwork opening
• Do not measure the existing frame or door

Width

Measure the width from the outside in at least three different places from brick to brick. The three measurements should be taken from the top, middle and bottom of the opening. Take the smallest of the three measurements as the width. Check your measurements at least twice and deduct 10mm from the final width measurement.

composite front doors

Height

The height measurement should be taken on the outside from the top to the bottom of the brick opening. At least three measurements should be taken from the left, middle and right.

Take the smallest of the three measurements as the height with 10mm deducted for fitting allowance.

composite door with double glazing

Side Panels

If you wish to order side panels, please start by measuring the width and height of the door as described above.

To measure for the side panel width, find the centre point of the frame, between the door and side panel and measure to the outer edge of the side panel frame.

The side panel frame width we use is 77mm to match the door frame width.

composite door prices

Top Light

If you wish to order a top light, please start by measuring the width and height of the door as described above.

To measure for the top light, find the centre point of the frame between the door and top lights and measure to the top of the door frame.

This should provide you with the transform drop for the top light.

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