This British Standard specifies requirements for the design, construction
and performance of fully finished and glazed factory?assembled timber
windows of various types.
This British Standard applies to windows 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 supplied as
kits for site assembly.
It applies to windows fabricated into frames in a factory, to be
installed vertically (±15°) into the external face of buildings, as single
or multi?light units, in coupled assemblies when appropriate, of the
following types:
hinged: side-hung (open in or out), top-hung a) (open out), bottom
hung (open in), tilt and turn or turn before tilt;
b) projecting: side-hung (open in or open out) and top-hung
(open out);
c) pivoted: horizontal and vertical (hung centrally or off?centre);
d) sliding: horizontal and vertical;
e) side-hung and top-hung (open out) fully reversible;
f) fixed light;
g) direct glazed frames.
BS 644:2009 history
2012BS 644:2012 Timber windows and doorsets. Fully finished factory-assembled windows and doorsets of various types. Specification
2009BS 644:2009 Timber windows – Fully finished factory-assembled windows of various types – Specification
2003BS 644:2003 Timber windows - Factory assembled windows of various types - Specification
1989BS 644-1:1989 Wood windows - Specification for factory assembled windows of various types