Windows

Timber windows produced by Members of the British Woodworking Federation are accurate components designed and manufactured using the best available techniques to produce performance rated components. The way they are handled and stored on site can affect their long-term performance. Good practice avoids damage, maintains quality and saves money.

In July 2000 the Approved Document B (Fire safety) introduced a new concept of Emergency Egress windows to dwellings with an upper floor level of not more than 4.5m.

General advice on the procedures that are carried out during the manufacture of timber windows and the effect of poor protection or changes in climatic conditions can have on the windows in service.

Good practice guidance for installing timber windows which avoid damage maintains quality and saves money.

This guide is intended to explain briefly the relationship between the British Standard for timber windows, BS 644, and the European Product Standard for windows, BS EN 14351-1.