Provision should be made to ensure that protection from falling is made no worse as a result of a replacement glazing installation.
In some situations existing windows act as guarding to prevent building users from falling. In such situations replacement windows should continue to provide appropriate guarding to the bottom edge of a window, opening or otherwise, to ensure protection from falling.
It is recommended wherever possible that guarding is installed to the current minimum size.
Ground floors with basement wells or sunken areas next to the building and all upper floors should be provided with ancillary guarding where minimum floor to sill or floor to opening casement heights are less than:
Note. Fixed glazing panels below 800 mm may also serve as guarding provided they are sufficiently robust.
Updated: 5 August 2009