Tri-layer aluminum vapor barrier. Made of aluminum, functional film and polypropylene fabric. The aluminum layer ensures reflection of heat rays inside the building. It can be made to order in a version with two self-adhesive tapes - SK2. The active properties of the vapor barrier are based on the prevention of condensation, which is not provided by ordinary vapor barrier films.

It is used in residential and industrial construction as a vapor barrier layer that protects the attic against the ingress of excess moisture from the interior of the room for thermal insulation. Its active properties prevent, inter alia, the effect of a "plastic bag", that is, the formation of attic as a result of excess moisture, mold and mildew. Protects structural timber from rotting. When assembling it, it is absolutely necessary to use Eurovent DUO adhesive tape to glue subsequent plants in and to seal the joints with roof construction elements.