Rhondda Cynon Taf Homes A large CESP funded scheme in Fernhill, which saw external wall insulation being applied to 350 Wimpey No-Fines properties over 16 months. Client RCT Homes & Private Homeowners Location Fernhill, RCT Start Date August 2011 Value £3,200,000 Length 16 Months Work Type External wall insulation, roofing, window replacements and associated works Number of Properties 350 Type of Properties Wimpey No-fines Insulation Type 100mm Mineral Wool U Value Finish Applied Pebble Dash & Brick Slips