Measuring Up
General Information
As a rule, doors are ‘glazed’ (installed) from the inside and windows from the outside.
‘Tight’ size refers to the dimensions of the aperture into which the glass is to be fitted.
To ensure a good fit, glass size is generally 3 to 4 mm less overall than tight size.
Extra care should be taken with old unsquare frames.
If possible remove the putty or bead so that sizes can be checked.
We need to know the visible size if your panels are to have a border.
Critical Locations
In internal and external walls in terms of safety (BS 6262 part 4)
Safety glass is required on any panel below 1500mm from the floor on a door or within 300mm of a door. It is also required on any panel within 800mm of the floor.
Laminated glass is also strongly recommended for security. Because it is constructed of two layers of glass with a plastic interlayer it resists casual break-in attempts.
Darker areas show critical locations to which requirement N1 applies
(ie. glazing in areas numbered 2, 3, 5, 6, 7, 9, 10, 11, 12).
