Whole House Retrofit competition win

We are delighted to be working with Renfrewshire Council to deliver the BEIS Whole House Retrofit Innovation competition.

The Crosswalls (Whole House Retrofit) project team includes Renfrewshire Council, John Gilbert Architects Hab-Lab initiative, BRE Scotland, CSIC and the Passivhaus Trust.

The competition was run by the Department for Business, Energy and Industrial Strategy and has awarded funding for 75 council owned homes in the Paisley area to be upgraded with a series of deep retrofit measures to bring them up to EnerPHit standard (equivalent of Passivhaus for retrofit). These measures include new offsite prefabricated highly insulated timber panels fixed to the external walls and roof of the existing house which are then and clad in cement fibre board cladding. A very airtight external envelope combined with new triple glazed windows and Mechanical Ventilation Heat Recovery (MVHR) means the homes will be very airtight and energy efficient, without compromising internal air quality and comfort.

Director Chris Morgan said “We are delighted to be working on this large scale EnerPHit project, gearing up to meet Scotlands 2030 climate change targets. We have been working with Renfrewshire Council, through Hab-Lab, on the performance of their existing homes for a number of years and are excited to be part of this exemplary project.”

The team and BEIS believe this bid is a key early step in reducing retrofit costs whilst delivering lower carbon sustainable construction to reduce fuel poverty. The funding provided through the BEIS competition will enable the retrofit interventions to be deeper and develop an approach for mainstreaming of this type of panelised retrofit process.

About Hab-Lab
Hab-Lab builds on John Gilbert Architects reputation for sustainable design, it reinforces our aspiration to create designs that not only look great but also perform flawlessly. Our team assist clients to benchmark, measure and improve the performance of their building stock. This award winning service has worked with a range of clients to assess and monitor stock then propose changes to improve performance. Our clients have benefitted from EESSH compliance advice, building fabric problem diagnosis, ‘quick win’ building performance improvements, better void management techniques and better resident handover information.

About EnerPHit
Passivhaus is not just for new builds. The same level of rigour can be applied to retrofit using quality building components, superior insulation, ventilation with heat recovery, thermal bridge free design and airtight construction, deep energy retrofits can be achieved using the Passivhaus Standard. The EnerPHit standard recognises the constraints imposed by working with an existing building and has been created with lowered airtightness and heating demand criteria specifically for these reasons.