What is a Recess?

A window recess (or window reveal) is the distance between the surface of a window pane and the the wall that the window is built into. In order to determine whether you will be designing/installing an inside or outside mount, we need to first work out whether the window has a reveal and, if so, how deep it is.

During the quoting process we will ask if your window has a recess, and if there are any obstructions in the way of your recess such as an inward opening window, fly screen etc.  If you have a minimum of 70mm of clear space in your recess we will generally recommend a Z shaped frame. To learn about the differences between a Z frame and L frame, click here.

A recess is not the same as having a window sill.

If installing an inside mount, the depth of a window recess will also determine whether you will be fitting an inside L frame or Z frame. Windows that have a recess are generally installed with a Z-frame to support the plantation shutter panels.


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Gilad Baker
By: Gilad Baker Published: 08 Feb 2018