Protan PROVAC - Vacuum Roofing System

PROVAC, Protan's unique single ply roofing system, utilises wind forces present in the environment to provide durability and protection even in extreme conditions. Since the installation of the first Norwegian vacuum roof in 1985, the system has been adopted for over 2 million square metres of roofs throughout Europe. PROVAC works by loose laying the Protan SE membrane onto the roof with fastening only around the perimeters and penetrations. Strategically located vents within the design act as pressure release valves. The stronger the wind forces, the better the system works. The system is suitable for both new roofs and refurbishments, in particular those with structural concrete or concrete slab decks. A key component is an airtight load-bearing vapour control layer. The system introduces controlled airflow beneath the membrane through specially designed air valves. Due to the nature of the design principle, the substrate must be airtight. PROVAC offers many benefits to the specifier, contractor and building owner: Sustainable & Energy Efficient: - The system is adhesive free so there is neither toxic waste nor consequent health risk to the installer - The airtight fit helps achieve and can exceed Part L regulations. Only mineral wool insulation is suitable for the PROVAC system due to its airflow dynamics - Protan and Rockwool have a long working history with roofs covering millions of square metres installed across Scandinavia and Europe - The supporting structures ...



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