:: ROOF INSULATION FROM THE OUTSIDE WITH OR WITHOUT LATHS Aluthermo® is roof lining, insulation, and vapour barrier all rolled into one, and it can be fitted by a single person:  no need to insulate from inside. Aluthermo® is efficient and economical. In renovation work, problems of rafter spacing or height no longer exist. Even the shape of the rafters is of no importance. In new buildings, conventional lofts require less timber. You can therefore create a healthy living space that you can enjoy season after season thanks to Aluthermo® .