MOUNT HILL FARM
Renovation & Extension - 4 bedroom cob and stone farmhouse, Perranporth
The aim of this project was to upgrade the thermal performance of the existing cob and stone elements of the building whilst maintaining the breathability of the
Working in partnership with Atelier 3 architects, a design and specification which maximised energy efficiency and maintained the traditional aesthetic of the building was formulated.
This was achieved using an external hempcrete system thereby protecting the cob from weathering and allowing thermal bridging to be minimised; the thermal mass of the cob and stone walls being left exposed internally to stabilise seasonal temperature fluctuations. The building also had a second storey timber frame extension filled with sheepswool insulation.
All internal surfaces were finished with lime plaster and breathable paints. Double glazed argon filled windows and doors made in hardwood finished with breathable paints.
Heating is provided with underfloor pipes linked to a log boiler and 2500 litre thermal store. Summer hot water requirement is provided by an evacuated tube solar thermal system. The client also had supplementary heating supplied by wood burning stoves in the lounge and reading room.
_' When we first looked at the house we soon realised that with love and attention it could be a very special place. We were also clear that we wanted the project to have minimal impact on the environment and to work with the natural building materials of the house. Working with Adam gave us the confidence to try new materials and techniques and we think the results both inside and out are stunning.'
Jock Horton, Client