Location
Great Yarmouth
Client
Great Yarmouth Borough Council
Standard
Enerphit
Delivered by
Beattie Passive
Wall Uvalue
0.12 W/m²k
Roof Uvalue
0.11 W/m²k
Perimeter Floor Uvalue
0.43 W/m²k
Airtightness
> 1 m3/hm²@50pa
EnerPHit social housing retrofit – project overview
This retrofit in Great Yarmouth was undertaken on a block of six flats owned by Great Yarmouth Borough Council. This block was chosen for the project due to its traditional 1950s style, a common typology across the UK. For this retrofit, we developed a new bracketed system that delivers a fast, efficient, and cost-effective deep retrofit solution. It can be adapted to suit any of the UK’s mixed typology of housing. The results of this EnerPHit social housing retrofit have been excellent and the system’s versatility has been proven.
New triple-glazed windows were installed within the cladding system, along with an individual Mechanical Ventilation with Heat Recovery (MVHR) system for each flat. This approach maximises the benefit of the retrofit with regards to achieving target CO2and energy bill reductions. The retrofit achieved the EnerPHit retrofit standard (the Passivhaus standard for retrofit and refurbishment projects), with a space heating demand of 25 kWh/m2 and an airtightness of less than 1 ach-1 @50Pa.
I used to have mould and condensation in my living room, kitchen and bedroom, but now that’s all gone. I don’t have to use the heating very much now either, and when I do its only for an hour or so.
Lina, Resident
Retrofit Project Benefits
- Lifting tenants out of fuel poverty – Expected 75% reduction in space heating requirements.
- Expected airtightness result of less than 1 ach-1 @50Pa.
- Limited Disturbance to residents – Residents remained at home for the duration of the retrofit.
- Healthier, more comfortable homes – individual MVHR system for each flat providing filtered, fresher air.
- A new look home – completely new, modernized external façade.
- Enhanced fire safety – Non-combustible materials, horizontal and vertical fire barriers between floors, all services are fitted with fire collars and extra fire safety around windows and doors.
