Durham County Council 300 traditional terraced brick properties in the North of England which benefited from both internal and external wall insulation. Client Durham County Council, British Gas, Private Landlords & Homeowners Location Easington Colliery Start Date February 2012 Value £1,400,000 Length 7 Months Work Type External and Internal Wall Insulation Number of Properties 300 Type of Properties Traditional Solid Wall Terraced Houses Insulation Type 100mm EPS Board Externally, 60mm PIR Board Internally U Value Finish Applied Pebble Dash Externally, Plaster Board Internally