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JELD-WEN Windows Chosen For Sustainable Homes In Norfolk

A visionary new way to build energy efficient homes has been pioneered in Diss, Norfolk, and the innovative method of construction includes timber windows from JELD-WEN.

The development of 114 homes, known as Long Meadow, which are being built by C-Zero, comprises one and two bedroom apartments and two and three bedroom houses in a unique project which uses the very latest sustainable building techniques, whilst still making the homes affordable to buyers.

JELD-WEN’s timber windows were specified because Czero wanted to use the most sustainable material for window frames and also to work with a UK manufacturer.

Discussions between C-Zero and JELD-WEN’s technical team led to the development of JELD-WEN’s Stormsure triple-glazed, fully finished windows with a U value of 1.2 W/m2K, which met the requirements perfectly. The development was being built to Code Level 4 of the Code for Sustainable Homes and it was vitally important that the properties had low impact on the environment and that they were cost and energy efficient to run. C-Zero also specified JELD-WEN’s DreamVu™ timber doorsets to the exterior of the property, which delivered a very low U value.

The C-Zero team developed the Renewable House at the BRE in Watford, where it pioneered the approach of Hemcrete for the walls, which is made from a combination of hemp shives and lime, creating a robust and sustainable construction material. This material also has strong insulative properties and is considered to be ‘carbon negative’, because Hemp, like timber, absorbs carbon dioxide when it grows, retaining the carbon and releasing oxygen.

The Hemcrete walls, which achieve a U value of 0.18W/m2K, combined with high energy efficient timber windows from JELD-WEN, means the homes offer the very best thermal performance, as well as reduced solar gain. They will also be affordable to heat and have a very low carbon footprint. Although this is an innovative construction method which has never been used on such a large scale as this development, the properties have been constructed to complement the local style, which is further enhanced by the aesthetics of the fully finished timber windows.

Tony Pell, Business Development Director, for JELD-WEN, said: “This is a pioneering way to build sustainable homes and timber windows fit with this approach perfectly as a low-impact and environmentally friendly material. We worked closely with C-Zero to design bespoke windows that could achieve a very low U value and enhance the energy efficiency of these truly sustainable properties.”

Robert Pearson, Director of C-Zero, said: “This is a very exciting development and it just shows how through careful selection of green technologies, such as windows and doors with very low U values, that new homes can offer a much higher level of energy efficiency. We wanted to use timber windows for their aesthetics and the fact that they are a truly sustainable material, which fitted well with the ethos of these homes. The result is homes that are attractive to look at, affordable to run and that have the very best environmental credentials. We expect these homes to provide a benchmark for future sustainable construction.”

Every individual aspect of these homes has been carefully considered to ensure they provide the very lowest carbon footprint. This not only includes energy efficient windows and doors, but also a renewable heating system, low energy light fittings and smart meters meaning that homeowners are aware of just how much energy they are using.

At Long Meadows, C-Zero has concentrated on what the buildings are made of and how they are built, instead of using existing housebuilding practices and adding renewable technologies.

This means that sustainability comes from within and, from the outside, there is little to tell that these homes are energy efficient and have such a low impact on the environment.

“We have sold over half of the plots on the first phase already and buyers are being attracted by their sustainability and affordable running costs,” explains Robert Pearson. “These homes really do represent the very best in sustainable construction and it is this that is making the difference.”

JELD-WEN’s timber windows and doorsets supplied to this development had full Chain of Custody certification, which means they originate from well managed forests with strict reforestation programmes.