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How to properly measure windows and doors for pricing? – A step-by-step guide.

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Properly measuring windows and doors is a key step in the process of pricing and preparing for their replacement or installation. Accurate measurements ensure that the products you order will fit perfectly, which is important for thermal insulation, safety and aesthetics.

Here’s some basic information to help you measure your windows and doors correctly:

1. what tool do you need to measure windows and doors?

Before taking measurements, make sure you have a rolling measure, a level, a notepad and a pen with you. Accuracy is key, so a metal tape measure is recommended.

2 – How to measure the windows?

  • Measure the distance between the window recesses at the widest point. Take the measurement in three places: at the top, middle and bottom of the window. Use the smallest measured value for pricing.
  • Measure the height of the window, from the top to the bottom edge of the recess. Take the measurement at the left, middle and right points. Choose the smallest reading to proceed.

Remember to account for any unusual shapes or bulges.

3 – How to measure the door?

  • Measure the width of the door at three points: top, middle and bottom. Write down the narrowest reading.
  • Measure from the top edge of the door frame to the floor. Take the measurement on both sides of the door and note the smaller value.
  • Don’t forget to measure the thickness of the door, which is especially important when replacing it with a model of a different specification.

4 Additional tips for measuring windows and doors.

  • Include in your measurements the space required for installation, such as frames or seals.
  • Always check whether there are any obstructions (e.g., radiators, light switches) that could affect the installation.
  • If in doubt, consider consulting a professional. A professional can also consider additional aspects, such as the slope of thresholds or the need for special safety features.


Remember that accurate measurements are essential for accurate pricing and to avoid problems during installation. Inaccuracies can lead to additional costs or the need for modifications at the installation stage. Therefore, approach the measurement process with due diligence.