Insulation

Insulating a room above a garage that is always cold

Anonymous user 28/02/2024 - 2.57 PM

Hi, I have a room above a garage and it is cold. When you walk on the floor the floor is cold. The underlay is a good thickness and the carpet is 80% wool Hessian backed. The walls are cavity wool insulated and the above the ceiling I have 100mm of insulation overlaid by chipboard as a storage loft. I have cut an inspection hole in the garage and I can see insulation under the floor. I created a probe using a metal coat hanger and gauged that there is about 100mm of insulation between floor and garage ceiling. So it would appear to be quite well insulated but the room is cold. For example, in the winter the house is around 16-17 C yet this room is about 10 C even though the radiators are on and hot. I suspect there is a draft or cold bridge somewhere. I have been contemplating taking down the garage ceiling and re insulating. However, I have several questions that require some advice on the best way to proceed. 1) My main consumer unit is in the garage and all the circuits go up through the ceiling. I know that you can't insulate around the cable as it reduces the heat dissipation and can cause cable burn out. It must be fine now as I have been in the house for 17 years. 2) What would be the best type of insulation material? I have considered foam insulation to seal against drafts and as it is unlikely to ever be opened up again that could be a good solution. 3) I considered wool type insulation - anyone had any experience with this type? Thanks...