Triple-layered roof insulation plate

摘要

The insulation plate comprises a water-repellant diffusion open non-slip upper layer (6) and a lower layer (8) with smooth surface suitable as internal room finishing, eg. of plasterboard. Between these two layers is an insulating central layer (7) of polystyrene. The upper layer can be a foil. The superposed layers can be glued together over their entire surfaces through pressure. The foil-like upper layer overlaps on at least two marginal sections. The insulating middle layer can be made in two thicknesses for use with new and old buildings.