Velux ZOZ 216 ZOZ 216 Skylight Adhesive Underlayment

The Velux Adhesive Roof Underlayment is an alternative to roofing felt to wrap skylights or roof windows. It covers and helps to seal gaps between the flashing and roof deck, protecting against extreme weather conditions and preventing water leaks. This underlayment would be important to place in areas where ice or snow accumulate on the roof.