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Often referred to as SBS (Styrene Butadiene Styrene) or APP (Atactic Polypropylene), modified bitumen consists of a rubber and asphalt bitumen blend for flexibility combined with fibreglass or polyester for reinforcement. The product is manufactured into sheets or rolls and applied in one, two, or three plies however, two-ply is the most common. The material can be incorporated into a conventional or inverted roof system. Modified bitumen roof systems can be installed with common torch applied methods, asphalts, or cold adhesives.
Modified Bitumen
EPDM
EPDM is a single ply synthetic rubber roofing membrane. It can be installed in a conventional or inverted fashion. The membrane comes in a variety of reinforced or non-reinforced thicknesses and roll widths. It is available in black or white and can be either ballasted or fully adhered
TPO
TPO is a single-ply reflective roofing membrane made from polypropylene and ethylene-propylene rubber polymerized together. It is typically installed in a fully adhered or mechanically attached system, allowing the white membrane to remain exposed throughout the life of the roof. The membrane comes in a variety of reinforced or non-reinforced thicknesses and roll widths.
ROOF SYSTEMS
Driving rain, baking heat, bitter cold and ice build-up are just a few climate characteristics that can affect any structure. At Century Roofing & Sheet Metal our membranes can survive these damaging elements and provide long-term benefits to owners.
BUR (Built-Up Roofing)
Built-Up roof systems are constructed with layers of felt and bitumen that are applied hot and left to cool. They are then covered with gravel, a mineral sheet cap, or other weather resistant coatings. Generally, BUR systems are three or four ply. The layering of the bitumen and felt provide enhanced water resistance.
