PassivHaus doors down to U-0.62
2nd February 2016

What is said to be the most significant PassivHaus project completed to date within the UK social housing sector has been constructed on the Isle of Wight using KF 410 exterior doors from Internorm.

Built for Southern Housing Group at a total cost of £4.2 million, the 28 new fully PassivHaus certificated homes include 16 semi-detached two and three storey properties; with up to five bedrooms, plus a dozen one-bedroom sheltered units.

Andrew Hulmes, Area Development Manager for Southern Housing Group, said: “During the tendering process, Southern Housing Group had informed contractors that it preferred to incorporate pre-certified windows and external doors as it would facilitate the PassivHaus accreditation process.

“Our contractor for this project selected Internorm for the external doors as the products the manufacturer offered best met our needs in terms of performance, including airtightness and insulation levels, as well as delivery and costs.”

Internorm’s doors feature an aluminium external skin while the Timber/PVC-U construction achieves thermal performance with U-values down as low as 0.62 W/m2 K. Perimeter seals help maintain air leakage to around 0.6 m3/m2/hr.