It is used for heat, sound and water insulation in terrace roofs. It is an uncoated rock wool plate. Presented to the market in shrink packages. It is used on all wooden and metal roofs, all kinds of terraces. Trapezoidal metal sheet is applied on concrete or aerated concrete roof slab. A layer of nylon cover is laid as a vapor barrier. It can be applied in one or more layers depending on the thickness of the thermal insulation. Waterproofing cover is attached on it.