Fiberglass roofing tissue is excellent substrate of waterproof bitume membrane. We usually use fiberglass yarn(yarn space is 15mm or 30mm) to reinforce the fiberglass roofing tissue.we can produce different types according to customers' requirement. Area weight can be from 35G/M2to 120G/M2, yarn sapce can be 15MM or 30MM, roll length can be made from 0.05M to 2 M.