This British Standard specifies requirements for materials (including timber preservation), profile design, workmanship, glazing, construction, safety, security, weathertightness performance, and operation and strength performance of factory assembled timber windows of the following types:
a) hinged: side hung, top hung and bottom hung;
b) projecting side hung (open out or reversible);
c) projecting top hung (open out or reversible);
d) pivoted: horizontal and vertical (hung centrally or off-centre, including reversible);
e) sliding: horizontal and vertical;
f) tilt and turn;
g) fixed light;
h) direct glazed.
This British Standard does not apply to windows supplied as kits for site assembly.
NOTE The timber windows covered by this British Standard may be treated with either opaque or non-opaque finishes. Some glazing and finishing operations may be carried out on site.
BS 644:2003 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