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Modified Bitumen Roofing

This type of low slope roofing material is referred to as modified bitumen due to it's material makeup which consists of modifiers that are added to standard roofing asphalt to replace plasticizers removed during the distillation process. Bitumen is reinforced with fiberglass or polyester fiber matting in order to increase durability and strength.


The two most common types are SBS and APP. The use of SBS (styrene-butadiene-styrene) increases the flexibility of the membrane and allows it to have stronger expansion and contraction capabilities. A standard SBS modified bitumen roof system is a two-ply system applied in rolls that overlap the edge of the previous roll. The other type of modified bitumen roof is the APP (attactic polypropylene) which is used for its ability to increase the aging ability of the roof system. SBS is often the more popular system as the synthetic rubber additive increases the products flexibility.
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There are a handful of methods for installing a modified bitumen roof system which consist of the most common method of torch applied, as well as with asphalts or cold adhesives.
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TWO TYPES OF MODIFIED BITUMEN

Both SBS and APP systems can be reinforced with either glass or polyester. There are a variety of advantages with these types of systems, such as the rolls of material being factory manufactured which ensures quality control. These systems are also well-suited to expand or contract with the movement of the building they protect.
A modified bitumen roof system is versatile and can be finished with a variety of surfaces that enhance their resistance to oxidation and damage from UV rays.
SBS (Styrene Butadiene Styrene) systems are usually installed with hot asphalts or cold adhesives.
APP (Atactic Polypropylene) systems in almost every case are installed using the torch method.

Modified Bitumen Roofing Systems

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Complimentary Roof Replacement Quote

Does your business have a modified bitumen roof that needs to be repaired or replaced? We have decades of experience working with different types of modified bitumen roofing systems so you can trust that your business' roof is in good hands. Give us more information about your business location and contact details and we will be in touch to set up an appointment for your complimentary roof evaluation.
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​New England Roofing & Waterproofing LLC
Amesbury MA. 01913
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​(978) 872-7863
  • Home
    • Why Choose Us?
    • Letter from Our President
  • Home Owners
    • Residential Roofing Services// Re-Roofing & Repairs
    • Shingle Selection >
      • OAKRIDGE SHINGLES >
        • OAKRIDGE PHOTO GALLERY
      • DURATION SERIES SHINGLES
      • DEVONSHIRE SHINGLES
      • BERKSHIRE SHINGLES
    • Total protection roofing system
    • OUR WARRANTIES
  • Businesses
    • Commercial Roof Replacement
    • Commercial Roof Repairs
    • New Roof Construction
    • Commercial Roof Coatings Services >
      • Commercial & Industrial Roof Coatings
      • Fluid Applied Wall Coatings
      • Fluid Applied Floor Coatings
  • Free Quote
  • Locations