Westcott House, a large Victorian country
residence within Dartmoor National Park, has become the first building in the
UK to be certified under the Passivhaus Institute’s (PHI) Low Energy Building Standard.
The new standard is designed to acknowledge projects which have overcome contextual and constructional challenges to achieve some of the highest standards of low energy design in the world.
The new standard is designed to acknowledge projects which have overcome contextual and constructional challenges to achieve some of the highest standards of low energy design in the world.
Gale
& Snowden applied a holistic passive design strategy to the renovation
and extension of the house which allowed the existing property to be upgraded
to a level of efficiency such that a conventional heating system will only be
required in times of extreme winter conditions.
At the same time, summertime overheating is avoided and overall
environmental impact is minimised.
Extremely high levels of insulation have been added to the existing building, both externally and, where existing stone facing was to be retained, internally, together with high-performance, triple glazed windows and doors. Rigorous detailing was required to ensure continuity of insulation and airtightness around the building to reduce heat loss and minimise thermal bridging.
Extremely high levels of insulation have been added to the existing building, both externally and, where existing stone facing was to be retained, internally, together with high-performance, triple glazed windows and doors. Rigorous detailing was required to ensure continuity of insulation and airtightness around the building to reduce heat loss and minimise thermal bridging.
The fabric-first approach was combined with
a highly efficient mechanical ventilation system with heat recovery to ensure
excellent indoor air quality and minimise heat losses through
infiltration. Low carbon technologies
and on-site renewables further contribute to reducing the building’s overall
carbon footprint.
Further information about Westcott House
can be found here
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