If you are planning or have built a new extension on your existing home you will have to insulate the extension. Your building inspector will not sign off on your exertion until it has had cavity wall insulation. But it may be more than just your extension that will need insulating. Building inspectors are often insisting on isolating the whole home to sign off on any new building works.
Because the nation is aiming to be greener, cleaner and more efficient, homes are being pushed to lower their energy consumption. Insulating the home aids in lowering your energy bills. For this reason, building inspectors are requiring homes without insulation to be insulated, this is enforceable during any building works such as extensions as the work will not be signed off until the extension or/and the main building have been insulated.
A large part of our work is insulating homes that have been required to do so by a building inspector.