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Permavent METAL uses the very high production methods of Permavent MAX as base layer to which a spiral layer of polypropylene mesh melt bonded. It is specially design as a moisture and seperation layer for all types of standing seam and metal roofs. It is designed to be laid on top of rigid insulation or timber or plywood boarding and is clean, safe and lightweight.
Its high tech design is ideal for roof pitches over 3? and will mask irregularities such as board joins that could deform the metal roof covering Permavent METAL easy to install in and allows the metal roof to be installed in the usual manner.
Permavent METAL is fully vapour-permeable, and provides a strong, durable and waterproof barrier.
