CE certified
Performance
Permo Sec is a vapour permeable waterproofing barrier that is installed as a separating layer between copper, Zinc, Aluminium and stainless steel standing seam roof finishes and the supporting deck.
Permo Sec comprises of an outer layer of polypropylene mesh bonded to a vapour permeable membrane. The product is laid between the timber deck/insulation and the outer metal roof covering and can either be laid horizontally or vertically and is fixed using non-ferrous staples or flat head clout nails on the overlap.
Permo Sec will prevent any condensation that occurs on the underside of the metal roof covering from re-entering the roof structure and will offer protection against any external moisture that may penetrate the outer roof covering. Provides an air space below zinc coverings to allow protective oxidation to form.
Installation
Permo Sec should be laid in accordance with our installation details set out in our Permo Sec product guide. For further technical information please refer to Permo Sec 150dpi.pdf