No, membrane roof is not the same as rubber. Both are made of synthetic materials, but they have different properties and uses. Membrane roofing is a type of single-ply roofing that consists of a continuous sheet of synthetic material, typically polyester or fiberglass, coated with asphalt or another waterproofing material. Rubber roofs are made of vulcanized rubber, which is a molded and cured product that can be either rolled out in sheets or applied in liquid form.