1 Scope
This British Standard specifies requirements for the design, construction and performance of fully finished and glazed factory-assembled timber windows and external pedestrian doorsets of various types.
This British Standard applies to windows and doorsets that have been treated with either opaque or non-opaque finishes or that are designed to support an externally fixed covering of another material, and that have been factory-glazed. It does not apply to windows or doorsets supplied as kits for site assembly.
This British Standard does not apply to composite doorsets as defined in BS 8529:2010, but does cover doorsets that are predominantly timber-framed (stile and rail construction) with replaceable composite panels.
It applies to windows and doorsets fabricated in a factory, to be installed vertically (±15°) into the external face of buildings, as single or multi-light units, or in coupled assemblies when appropriate, of the following types:
a) windows:
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hinged: side-hung (open in or out), top-hung (open out), bottom-hung (open in), tilt and turn or turn before tilt;
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projecting: side-hung (open in, open out or reversible) and top-hung (open out or reversible);