Our Sovereign Stormsure casement window range offers an amazing variety of designs, from standard casements to Regency-style and bay windows.
JELD-WEN’s Sovereign Stormsure casement window range gives you a choice of three types of timber:
- PEFC softwood, protected with an advanced preservative system
- FSC hardwood

- FSC oak
U values shown are for factory-glazed Low E products only.
For glazing and finishing options see our Product Options section.
The sizes of windows shown here are co-ordinating sizes Ref: BS 644. The actual sizes of the frames are 5mm less in height and width. This is not an installation clearance.
Casement windows above 630mm wide x 900mm high and fitted with butt hinges can be used as Fire Egress windows.
Important
If sill size, finish, ventilator colour and ironmongery colour is not specified, the windows will be supplied with a standard 158mm nominal sill, basecoat stained with brown ventilator(s), gold effect ironmongery, beige weatherstrip and butt hinges.
Ventilators
We supply all Sovereign Stormsure casement windows with flush-fitting ventilators as standard – in white or brown.
Weatherstrip
A beige weathership is fitted as standard, with white or brown colour options available.
Made to order – non-standard and special sizes
We offer a made-to-measure service for Sovereign Stormsure windows. Special bar configurations and unusual replacement sizes are available to order. Please call us on 0845 122 2890 for details.
Full technical specifications and further information is available in our Technical Windows Specification Guide.
Window ranges available: Soveriegn Stormsure casement timber windows, Sliding Sash timber windows, Hi-Profile Combi reversible flush sash timber windows, DreamVu high performance all timber and aluminium clad timber window range, Tilt and Turn all timber and aluminium clad timber window range.