Overall Window Size Sliding sash window type: 1 third top sash
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Sliding sash Window Designer |
Guide for measuring your sliding sash windows
Due to multiple possible installation situations, please seek advice from a professional tradesperson to survey and measure.
There are 2 main ways that your existing windows are installed: "brick to brick" or "check reveal":
1. Brick to Brick
You will see about 20 to 40mm of visible brick showing on the outside.
![](img/sash/brick-to-brick-sample.jpg)
How to measure brick to brick?
Measure between the external brickwork opening and deduct 10mm from both the width and the height.
![](img/sash/brick-to-brick.jpg)
Or
2. Check Reveal
The full width of the brick is visible on the outside.
![](img/sash/check-reveal-sample.jpg)
How to measure check reveal?
Measure between the external brickwork opening and add 40mm to the width and 20mm* to the height with equal 20mm* sitting behind the brick. (*Providing there is sufficient clearance to do so.)
![](img/sash/check-reveal.jpg)