External walls insulated plastered and decorated Recently I have been considering how to improve the thermal performance of older properties, particularly those that are built of a traditional timber frame. The walls of these properties cannot be treated with Government Subsidised Cavity Wall Insulation so I decided to carry out an experiment on my own home, starting a couple of weeks before Christmas with my bedroom – much to my wife’s joy! A traditional timber framed house is built out of timber studs (in my case these are made of solid oak) faced with timber planks, wired then cement...