When Associated Newspapers, publishers of the Daily Mail, decided to refurbish their offices at Northcliffe House (above what used to be the Barkers of Kensington department store), the challenge was to provide an energy efficient, contemporary working environment, addressing heat loss, solar gain and insulation from the noise generated from the hustle and bustle of the world famous fashion shopping mecca, Kensington High Street. At the same time, preserving this famous building’s breath-taking listed art deco facade, with its 2.5metre high monumental windows.

Working closely with architects Simons Design; contractors Simons Construction and consultants Fain Redfern, secondary glazing specialists Selectaglaze developed a casement window based on their existing Series 50 heavy duty unit with an extended bead to accept a “Part L” compliant sealed unit. The glazing combined one pane of Ecolite glass for solar control together with one of 6mm low emissivity Softcoat, to minimise heat loss. And a 200mm gap between the original monumental steel windows and the secondary installation ensured the most effective noise control, while leaving the sight lines completely unaffected. A total of 88 units were installed in a combination of single and coupled formats.

Northcliffe House represents the second project recently completed using this new technique developed by Selectaglaze. Purpose made secondary glazing is often the only way to introduce contemporary working and living environments into listed, historic or landmark buildings. Selectaglaze design, manufacture and install their units, which arrive fully assembled to allow for rapid installation with minimal disruption. Appropriate for staged refurbishment or upgrade plans, the units need very little on-going maintenance. Royal Warrant holder, Selectaglaze has an ongoing policy of product development and improvement, as seen with their range of secondary sections designed to accommodate “Part L” compliant sealed units and the company’s window protection suite providing certified protection against bomb blast, ballistic and physical attack. Secondary windows are constructed from aluminium sections with permanent paint or anodised finishes to complement the interior decor. A range of operating styles, including fixed, hinged, vertical and horizontal sliding, together with the ability to shape and curve selected frames, allows almost any window to be sympathetically treated.

Selectaglaze is also at the forefront with its technical literature. The company’s updated Product Guide is available from this month – free upon request - and their new website ( has just been launched. Selectaglaze may be contacted on 01727 837271/fax: 01727 844053/email:, or via the website.

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