Bay Window Installation

It is expected that bay windows will shortly come under Building Regulations at least with regard to structural integrity. Currently FENSA inspectors will check that provision has been made for suitable corner posts to suit load bearing situations. Future requirements may well see demands for calculations on loads applicable and how these are met by the bay system used.

Deceuninck have teamed up with specialist supplier Nicholls & Cooke of Southampton to develop a range of adjustable structural jacking corner post designs to suit the 3000 Series for both splayed and square bay types.

For splayed bays two options exist - one using 6916 PVC tube with 3311 frame adaptor and the second uses the smaller 3313 tube with 3327 clip in adaptors to provide an option with slimmer sighlines. For square bays 6920 PVC tube is used. In all situations Deceuninck have opted to use seam welded galvanized steel tubing for the structural element to maximise load bearing. Standard aluminium bay tubes are unlikely to have the required mechanical strength.

Bearing Plates:

• Bearing plates should be made from steel with a minimum thickness of 3mm, or aluminium with a minimum thickness of 5mm.
• The area of the bearing plate should be a minimum of 1800 sq.mm.
• Provision must be made to prevent the plate moving relative to the bay pole.
• The bearing plate must completely cover the end of the bay pole.

Further details of the system can be found in a separate publication “Manual for the construction of the Nicholls & Cooke Structural Bay System for the Deceuninck 3000 System”.

Please note: The information on this page is for guidance only, and Glass Tec Windows are not liable for any damages or claims.