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Modified Bitumen

Commercial Roofing systems

Modified Bitumen systems

Modified bitumen roofs are a durable, flexible option for flat and low-slope commercial roofs. These roofs feature an enhanced asphalt compound that protects the structure from water penetration, snow, and temperature fluctuations. With the right installation team, a modified bitumen (mod-bit) roof can last more than 20 years.

Features

  • Modified bitumen roofing systems are created when a polymer is added to asphalt to extend temperature limits and increase the pliability of asphalt.
  • There are two kinds of Modified Bitumen
  • Styrene Butadiene Styrene (SBS): This type of modified bitumen roof is installed using cold adhesive or hot moppings of asphalt and can come with adhesive backing. Modified bitumen SBS has a rubber-like appearance.
  • Atactic Polypropylene (APP): A thermoplastic polymer that is either heat-welded or torch-applied and gives asphalt a plastic-like quality.
  • SBS and APP types of modified bitumen roofing can withstand both high and low temperatures due to polymer modification.

Benefits