There was a stereo blasting away on the stand of hi-tech timber window manufacturer NorDan at Interbuild, but you couldn’t hear a note.

The sound system was inside a three-sided booth, which included the company’s three-handle tilt and turn double-glazed Standard windows and was designed to underline their acoustic performance.

Two other booths were used by the Norwegian-based manufacturer to highlight its windows’ security performance – accredited under the UK Police Secured by Design scheme – and their environmental credentials.

The company underlined the latter with information about several cutting-edge sustainable construction projects where it has supplied its 1.2 U-value double-glazed Low Energy or triple-glazed 0.7 U-value NTech Passive windows. These included Kingspan’s Lighthouse and Stewart Milne’s Sigma House at the BRE Innovation Park eco home test centre, and more recently the Barratt Green House on the same site.

The company’s £32m UK business is also focusing on the use of its high insulation products in existing housing stock and it had a major announcement in this area too.

“NTech Passive windows have been selected for a major project called ‘Retrofit and Replicate’ being undertaken by the Hyde Group housing association body with ECD architects,” said NorDan UK sales and marketing director Dareth Daley.

“This entails spending £80,000 on a 1930s three-bed house in Mottingham to reduce its CO2 emissions by 80%. Once it’s complete, the study’s findings will be applied in the market – and Hyde alone manages 40,000 properties.”