Many vapour and air permeable underlays use an airtight VP film layer to achieve their performance, whilst Roofshield’s patented SMS (Spunbond Meltblown Spunbond) structure allows high levels of airflow, in addition to the transport of moisture vapour, making the formation of condensation in the roof space virtually impossible. It has an extremely high degree of vapour permeability, as well as air permeability, so will still perform in conditions in which air tight alternatives will not.

It has long been recognised that the correct management of moisture vapour within buildings is an important aspect of ensuring the longevity of not only the building fabric, but also the health of the occupants.

This prestigious project will provide an imp

Product Information