In addition to the foam, mineral wool is sometimes used. Usually insulate mineral wool indoors. It looks technologically like this: a foam is laid, which will protect from the wind, then vapor -cutting material, a crate, a counterpart, a ventilation system, a lining, a drainage system. If you choose a soft type of roof, then lay it in several layers. Pass mineral wool in a row with rafters. For the manufacture of the crate, use the chips, such plates are treated with various impregnations to increase waterproofing. It is necessary to pay great attention to the ventilation system. In the event that the ventilation is not made correctly, then you will threaten the accumulation of mold and various fungi.