How to measure windows and doors December 11, 2023

In this article, you’ll find two handy tools to help demystify the process of taking preliminary measurements when requesting a quote to replace your doors and windows.

Measuring from the centre in three easy steps

  1. Measure the width of your window, patio door, or front or back door from the inside, including trim.
  2. Measure the height of your window, patio door, or front or back door from the inside, including trim. 
  3. Measure the depth of the window, patio door, or front or back door frame from the outside in.
Comment prendre les mesures de vos portes et fenêtres ?


Two handy resources to use

Isothermic’s window measurement guide (in French) brings together all of the information, measuring marks and tips you need to take preliminary measurements effectively.

Download the guide (In French)


Our printable measurement checklist provides a template you can use to record, room by room, all of the measurements you’ll need for your quote request.

Download the document (in French)


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