Vapour Permeable Roof Underlay Premium

Three-layer polypropylene sheet with a functional membrane in the middle, with a maximum waterproof value and excellent breathability, specially designed for application under tile on sloping roofs.

This sheet is designed to prevent the passage of water from both drops and windblown rain while being permeable to water vapor, improving the ventilation of the roof.

It has a high tear resistance, reducing the probability of breakage when working on it.