To comply with the current legislation for non domestic buildings full height glass in windows, partitions or doors must be marked correctly to make sure that it is made apparent. These markings are termed as ‘manifestation’ and are designed to help make glass obvious which can prevent injury if somebody was to walk into the glass.
The Building Regulations 2000: Part M states that glass entrance doors and glass screens will satisfy requirement M1 or M2 if:
a) They are clearly defined with glass manifestation on the glass at two levels; between 850mm and 1000mm and between 1400mm and 1600mm above the floor, contrasting visually with the background seen through the glass (both inside and out) in all lighting conditions.
b) Manifestation takes the form of logo or sign at least 150mm high (repeated if on a glazed screen), or a decorative feature such as broken lines or continuous bands, at least 50mm high.
