A university project to insulate a 250-year-old farmhouse has been given an award.
Bogendollo House near Fettercairn had an extended trial, led by Robert Gordon University, to assess the use of foam insulation to prevent heat loss in architecturally significant buildings.
The category C Listed building has received a commendation in the Scottish Energy Efficiency Awards.
The Bogendollo project was led by Dr Amar Bennadji, principal investigator and lecturer in architecture at RGU.
He said: “We wanted to show that heat-loss mitigation measures can be introduced to these buildings without compromising delicate internal finishes which often influence their elevation to listed status as much as their external structure.
“Many period internal features were still intact and our objective was to bring the building up to modern standards.”