Page 1 of 1 Search Results View 12 24 50 All Per Page REX SynFelt Category: Roofing Subcategory: Underlayment & Sheathing The 100% Polypropylene synthetic underlayment offers a strong, secure, and safe alternative to conventional roof underlayments. Learn More Page 1 of 1 Search Results View 12 24 50 All Per Page