Three-layer undertile foil consisting of a transpirant element surfaced on both sides with polypropylenic tissue. SYNTOLIGHT is transpirant to vapour and waterproof at the same time.
- high resistance to perforations
- god permeability to vapour (µ = 36)
- important weight
- easiness in handling
- good resistance to UV rays
- pleasant to the touch
- protective undertile layer for pitched roofs (ventilated or not)