Thermakraft 1350mm x 37m (50m2) Covertek 403 Plus Synthetic Roof And Wall Underlay - Fastener Hub

- Can be used in direct fix or cavity fix for roof construction
- Is more stable and more shrink resistant than kraft paper based underlays
- May be installed during adverse conditions (rain/snow) without affecting its durability and performance Covertek 403 Plus is a fire retardant, absorbent and breathable synthetic roof underlay, constructed using a microporous water resistant film sandwiched between two layers of spun-bonded polyolefin. Designed as a means of managing condensation, water vapour transfer and water ingress in roof applications.