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Introducing Steel Windows

For over a century, steel windows and doors have been specified for a range of settings with their unique, timeless qualities being used to evoke classic, old-world themes or make bold, modern statements.

Long Lasting

Original steel windows in buildings constructed at the beginning of the 20th century are still in good working order today. The advent of galvanizing in the 1940s has banished the spectre of rust which bedevilled earlier examples where maintenance was neglected during two World Wars. Hardware is still available to repair and renovate them, and their gradual evolution has ensured that sympathetic replacement is possible with modern high performance versions which retain a similar shape and style.


The strength of steel is a prime reason for its success as a window and door framing material. Steel framed windows, tested to the latest European standards for resistance to racking and twist, exceed all recommended UK requirements and satisfy maximum class 4 ratings.

Narrow Sightlines

There is no quality more readily associated with steel windows and doors than narrow sightlines. Their slender lines have been incorporated into all types of buildings over the years with an elegance which is rarely matched by the bulky profiles of aluminium, wood or pvc-u. The minimalist aspect of steel windows derives from the superior strength-to volume ratio of the material.

High Thermal Performance

The slender lines of steel frames enhance the glass-to-frame ratio. As the thermal performance of windows is dictated more by the choice of insulating glass than the material of the frame, even solid hot-rolled steel windows can demonstrate compliance with the energy conservation requirements of the Building Regulations. Thermal barriers within cold-formed tubular profile frames provide advanced solutions to the most demanding needs for thermal insulation.

Safe and Secure

Steel is the first choice for keeping intruders out. The SWA is an accredited group organisation of Secured by Design, the official UK Police initiative focusing on the design and security of new and refurbished homes, which promotes products such as steel windows that have passed its security tests. Steel windows and doors offer superior resistance to impact from accidental collision as well as proven solutions for fire resistance of 30, 60 and 90 minutes with respect to integrity only or integrity and insulation.


The source of steel billet, rod and strip, from which steel window profiles are formed, is basic steel smelted from almost 100% recycled steel scrap. The hardware, generally of brass or rust resistant steel, has evolved throughout the history of steel windows so that components of long-standing installations can be replaced and their life prolonged. Many listed buildings commissioned by patrons of the Arts & Crafts Movement, civic monuments of the Edwardian era, innovative designs of the Modern Movement, and examples of 1930s Art Deco, are characterised by steel windows which are still in good working order, demonstrating their longevity when properly serviced and maintained. When they are finally replaced, the original windows can be systematically dismantled and the frames, fittings and glass recycled. The 'green' credentials of steel windows are recognised by the Building Research Establishment's 'Green Guide' which gives them an above average B rating.