Steel is the real deal

The inherent strength and slim sightlines characteristic of W20 steel sections have enabled a member of the Steel Window Association to create a large screen with two sets of double doors, forming the entire gable end to a north London period property’s new extension.

Steel Window Service and Supplies, based in London N4, carried out the design, manufacture and installation of the multilight screen, which measures 4,484mm x 3,427mm high. The frames are hot dip galvanised prior to being finished in a polyester powder paint system.

Property owner Ian Forshew said: “There is no doubt that the steel windows are in keeping with the architectural style of the property, and I was impressed with Steel Window Service and Supplies so I went with their recommendation.”

In the case of this particular residential extension, the standard Steel Window Association specification sealed units have a 4-6-4 make up, with toughened, low-e coated glass for the inner leaf. Combined with a krypton-filled cavity, this provides an overall frame U-value of 1.8W/m2 K, while the excellent light transmission characteristics of the steel framed system maximise use of natural daylight as well as solar gain in the winter.