The Main house roof is conventional and high levels (300mm) of insulation has been installed.
More problematic is a small room to the rear of the property. This part of the building predates the main house and is believed to be a part of the original cottage on the site. Here 50mm Kingspan insulation has been installed between rafters, with cross battens with a multi foil insulation material stapled in place. The foil insulation was carefully taped at joins and edges, before adding further battens to take a plasterboard finish. Multi foils are the subject to much debate, as to thier true insulation value, but combined with at least some conventional insulation a reasonable level of insulation close to current minimum new build levels has been achieved. Long term the roof covering will be replaced with additional extenal insulation board.
More problematic is a small room to the rear of the property. This part of the building predates the main house and is believed to be a part of the original cottage on the site. Here 50mm Kingspan insulation has been installed between rafters, with cross battens with a multi foil insulation material stapled in place. The foil insulation was carefully taped at joins and edges, before adding further battens to take a plasterboard finish. Multi foils are the subject to much debate, as to thier true insulation value, but combined with at least some conventional insulation a reasonable level of insulation close to current minimum new build levels has been achieved. Long term the roof covering will be replaced with additional extenal insulation board.
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