Timber / wood
Roofshield is a three-layer, non-woven, spunbonded, polypropylene breather membrane with a patented melt-blown core. Installed beneath tiles and slates, it provides a secondary barrier to the ingress of rain, wind and snow while it also has a low vapour resistance and is air permeable.
It is intended for use as a pitched roof underlay and eliminates the incidence of interstitial condensation in pitched roofs.
The combination of low vapour resistance and air permeability eliminates the need for low and high level ventilation. It also means that a vapour control layer or air barrier does not need to be fixed at ceiling level. This is a basic requirement with other inferior performing products, which are air impermeable and have a significantly higher vapour resistance.
Roofshield provides a cost-effective solution to controlling interstitial condensation in a pitched roof. The exclusion of ventilation and a vapour control layer eliminates the additional expense of buying extra components and paying installation costs.