Cottage Retrofit, Cumbria

This lovely semi-detached terrace was completely transformed by architects O'Neil Associates from a dark and dank space to a well-insulated one with an airtight envelope and an MVHR ventilation system.

Gutex Thermoroom and Multitherm wood fibre boards were used to provide insulation, whilst Pro Clima Contega Solido SL and Pro Clima Profil airtight tapes were used around the windows. A Wellhöfer attic hatch was installed to improve thermal performance, and the internal walls were finished with Lime Green Solo plaster to create a beautiful, breathable interior space.