SBS Modified Bitumen Roofing

the leading installers of SBS Modified Bitumen Roofing

SBS Roofing stands for Styrene Butadiene Styrene, which is a type of Modified Bitumen Asphalt, popular among commercial roofing in the United States.

SBS Modified Bitumen is also a useful roofing material for residential and industrial settings. Being set in hot asphalt allows the material to have a strong bond and last longer. These roofs can be built up in multiple layers for extra strength. We have installed SBS Roofing on hundreds of roofs across the USA so if you want to learn if it is right for your roof, contact us today!

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SBS Roofing Material

Modified Bitumen (MB), an asphalt material, is manufactured with modifiers that give it plastic or rubber-like properties. The commonly used bitumen roofs are SBS and APP(Atactic Polypropylene).

Properties of Modified Bitumen:

  • Comes in widths of 36” to 39”
  • Covers 100 ft2 to 112 ft2 per roll
  • Smooth surface or mineral granules
  • Set in hot asphalt, cold-process, or torch applied
  • Made of 1-ply, 2-ply, or 3-ply systems

SBS Roofing Installation

SBS is one type of Modified Bitumen roof system. A wide range of reinforcements can be used in SBS roofing materials, including fiberglass and polyester. The substrate often determines the type of system being installed. Fiberglass mats and polyester reinforcements are the typical bases for these products. Fiberglass weighs less at about 1.0 to 2.5 pounds per 100 sq. ft. and Polyester weighs in at 3.5 to 5.0 pounds per square feet. The weight can influence work efficiency and strength over time, so we can help you choose what is best for your project.

Modified roofs have proven performance on residential, commercial, and industrial applications. Roof help recommends all modified roofs be installed on slopes not less than 1/4" per horizontal foot (stated "quarter in twelve" or "quarter-inch slope") in order to achieve positive drainage.

SBS vs APP Modified Bitumen

While APP was being looked into in southern Europe, northern Europe was experimenting with a different type of modifier called Styrene Butadiene Styrene (SBS). The French and Germans found that if they added 10%-15% of SBS rubber to asphalt, the asphalt’s characteristics changed to those of the rubber additive. They learned that they could stretch the SBS modified asphalt up to six times its original length and that, unlike the APP, it would return to its original size when allowed to relax.

Find the flat roof system right for your commercial building.

Contact the best SBS modified bitumen roof installers for a free quote!
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