FIELD: construction.
SUBSTANCE: invention relates to lightweight waterproof roll roofing to protect buildings or bridges, such as rolled roofing material. Roof comprises reinforcing material coated with a coating composition which includes I) 40–90 wt% bitumen and plasticiser blend, II) 5–50 wt% petroleum coke (petcoke) and III) 2–5 wt% elastomeric block copolymer and/or plastomeric polymer.
EFFECT: creating a rolled roof that can be processed by one worker, maintaining the geometric characteristics of the product, such as thickness and length, without sacrificing strength or characteristics or placement properties of the product.
25 cl, 5 tbl, 10 ex
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