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Case Studies » Surrey Passivhaus new build

Surrey Passivhaus new build

Enhabit acted as Passivhaus consultants with the client’s architect, Paper Project Architecture and Design, to design a new build Passivhaus in Claygate, Surrey.

The client was keen to achieve Passivhaus standards for quality, planning, environmental and financial reasons.

Of particular note is that the property was built using a sustainable cross-laminated timber structure. The external walls, roof and internal partitions were assembled in one week! The rest of the onsite construction process was made relatively simple, as all service holes, etc. were already included in the timber structure before arriving on site.

The property includes high performance insulation, triple-glazed windows and has an airtightness level of 0.56ach. A water vapour resistant layer was installed to avoid condensation problems.

The low energy newbuild Passivhaus
Daytime view of the low energy newbuild Passivhaus

The energy modelling demonstrated a specific heat demand of 14 kWh/m2.year, which satisfied Passivhaus standards, but the client decided against certification, as the meter readings spoke for themselves.

Enhabit provided the Passivhaus design services, Mechanical Ventilation Heat Recovery (MVHR) commissioning, airtightness testing and solar thermal installation.

 

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