A G.r.p. flat roof or fiberglass roof as its also known is one of the most popular roofing systems in the UK. G.r.p. stands for glass reinforced polyester, a material formed by strengthening plastic with fine fibers made of glass. G.r.p. flat roofs begin with a layer of catalyzed resin how to complete the system, a fire retardant topcoat resin is then applied to completely weatherproof the roof if and give it a more attractive finish. Our team of fully qualified in every aspect and are on hand to help with all your needs call us today.