Modified Bitumen

Durable Modified Bitumen

APP and SBS Modified Bitumen Membrane Systems

The two general types of polymer modified bitumen membrane systems are Atactic Polypropylene (APP) and styrene butadiene styrene (SBS). Each of these polymer-modified membranes differ in their chemical characteristics. Both modified bitumen membrane types are thick, heavyweight membranes that are reinforced with either polyester, fiberglass or a combination of both. 

Modified bitumen membranes usually come with a factory-applied mineral, granule surface, or an approved coating that is applied after the product is installed. Modified bitumen roofing systems provide the redundancy of built-up roofing with their added strength, flexibility, and UV resistance. 

Academy Roofing & Sheet Metal Co has over 30 years of commercial roofing experience to handle any new construction or commercial roof repair you need. We are always ready to help — contact us today!

Advantages of Modified Bitumen Roofing

  • Proven history
  • Tough, durable roof
  • High resistance to rooftop traffic
  • High puncture and tear resistant
  • Variety of applications
  • Easily maintained
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515-964-2345 
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