Wandsworth terraced house retrofitted to EnerPHit standard
A 120 year old terraced house has been successfully retrofitted to the EnerPHit standard. The Victorian shop-conversion had not been lived in or maintained for over 30 years and was in need of a deep retrofit to bring it into the 21st century.
Clients Luigi and Jane Caccavale bought the house on Barmouth Road in Wandsworth in 2013 with construction starting in March.
The house was designed by Alexander Owen Architecture in collaboration with energy consultants Green Tomato Energy, who have worked on a number of Passivhaus projects including Princedale Road and Lena Gardens.
The house was insulated internally to retain the original appearance of the façade and to meet stringent planning requirements. A new ground floor extension was constructed at the rear of the property to add extra living space.
Triple glazed sash look-alike casement windows were specified to retain the original aesthetics while providing the high levels of thermal efficiency and airtightness required to achieve the EnerPHit standard.
Main Team:
Client: Luigi and Jane Caccavale
Architect: Alexander Owen Architecture
Energy Consultants: Green Tomato Energy
Contractor: Reality HG
Structural Engineer: Elite Designers
Certifier: WARM Low Energy Building Practice
Key PH Performance Details:
Airtightness: 0.87 ach @ 50Pa
Thermal energy demand: 23 kWh/m2.year
Thermal energy load: 14 W/m2
Primary energy demand: 114 kWh/m2.year
Form factor: 2.58
TFA: 139 m2
