Authentic Aluminium Insulation Foil | 30m² Roll

Authentic Finnish sauna foil vapour barrier A specialised aluminium-coated kraft paper that blocks water vapour, made in Finland for use as an internal vapour barrier in saunas and other high-moisture rooms. It stops moisture reaching your wall structure and insulation, protecting the durability and efficiency of your build. One roll covers 30 m². Key features Impermeable to water vapour, protecting structure and insulation Made from premium virgin cartonboard with aluminium and polyethylene coating Install with the aluminium side facing the sauna interior Overlap sheets and seal seams with foil tape for full protection Suits other high-moisture spaces that need a vapour barrier Specifications Width: 125 cm Coverage: 30 m² per roll Net weight: 3.75 kg Material: Aluminium-coated kraft paper Installation tips Install over insulation between the studs, on clean surfaces Leave at least 50 mm of overlap on all edges and staple every 200 to 300 mm Keep the foil slightly loose to allow for heat expansion Seal every seam with foil tape and patch any gaps Leave a 20 mm air gap between the foil and the timber cladding using battens