Moistop PF is a mechanically attached flashing solution that protects against water intrusion in windows, doors, and other vertical through-wall penetrations. It resists cracking and curling as a result of its multi-layer composite structure that includes heavy-duty woven fabric coated with UV-resistant polypropylene. When used as part of the Henry 1-2-3 Moisture Control System™, Moistop PF is backed by an industry-leading 15-year warranty. Repairs are covered for both materials and labor with a single point of contact.