Clachan House, Fintry
Architect Stuart Mulgrew had his work cut out when he took on the major renovations of Clachan House Fintry in the middle of Scotland, to create a new highly energy efficient home for himself and his family.
Taking a 210 year old drovers inn which had been added to and extended over the years, he has in effect built a Passivhaus home within its ancient walls. And the Rationel windows he specified have far exceeded the Passivhaus airtightness Standard required, achieving 0.28h-1 @ 50Pa well under the 0.6h-1 @ 50Pa standard required at certification testing.
“In olden days, herdsmen would have travelled long distances to take their cattle to market, and Clachan House was one of many drovers Inn, they could stop over on their long journey. It had been badly extended over a number of years with various flat top roof additions. We have taken away the extensions, stripped back the layers of finishes from the outside walls, to expose the original Scottish stone, and built in effect a new “box” within that. This has helped us to achieve a Passivhaus Standard for a house.”
Stuart continues: “we were fortunate as in our village of Fintry, the local community has worked hard with our electricity providers over the planning of a new windfarm, ensuring that the Village had the resource of one of the wind turbines they built. This not only gives us all power and light, but also enables us to feedback and earn from the excess electricity generated on our land, returned to the National Grid.”
Stuart’s new home has no heating system. The warmth comes from human and animal (pets) natural body heat – and a small air source heat mechanical system. The insulation package is almost half a metre thick, and of course the triple glazing from the Rationel windows all contribute to its sustainable and energy efficient credentials.
Rationel supplied windows, fixed panels, French opening and patio doorsets from its Auraplus triple glazed range as well as a glazed entrance door. Says Cheryl Bunton from Rationel distributors ADW, “The Passivhaus standard is about as onerous as it gets, so to get such positive comments from an air tester regarding the air tightness of our products is very complementary. Clachan House was one of the very first Passivhaus projects we have supplied in Scotland.