Issue 40 winter 23 web - Flipbook - Page 44
Recent Developments
in Steel Fenestration
Boost Conservation of
Heritage Sites
The versatility of steel as a framing material for windows is well known. Slim, elegant windows and
doors can be fashioned from steel into a multitude of different shapes and dimensions to meet the needs
of a variety of commercial and residential schemes.
Recent innovations in steel fenestration have led to the
development of an even broader range of products
extending the application of steel frames further. This is
good news for conservation sites as new steel windows
and doors manufactured and installed at heritage
properties not only have a similar appearance to the
originals, they now outperform products which were used
only a matter of years ago.
Where an old single glazed steel window would not have
achieved a āGā rating, modern steel windows can deliver
up to an āAā rating. These windows come as expertly
engineered, high performance, double glazed units which
are well insulated, draught proof and resilient to fire.
Enhanced security is offered via the option of multi point
locking which is available to PAS 24.
Thermally broken steel windows and doors manufactured
of pre-galvanised cold formed steel sheet are of a different
construction to traditional hot rolled steel windows and
it is cold formed profiles which offer improved thermal
and acoustic performance and better fire resistance to
meet the increasing demands of current Building Regulations. Today there is very little difference between cold
formed and hot rolled steel profiles when it comes to the
thinness of the steel frames.
Jansen is one of the leading producers of cold formed,
thermally broken steel profile systems for windows and
doors and Clement is able to manufacture slender Jansen
profile fenestration products which meet the highest
requirements of thermal insulation, security and fire
protection, while still offering mechanical strength and
longevity. These windows and doors are suitable for
Below, new Clement steel doors from the Jansen range were used for the shop fronts at Berwick Street