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What is Modified Bitumen Roofing?

Modified Bitumen (MB) roofing is designed for low-slope roofs. This asphalt-based roofing membrane has been used in the United States since the 1970s.

A Five-Layer System

MB roofing achieves its impressive durability through a five-layer structure:

  • Insulation provides thermal resistance and stabilizes the roof’s temperature.
  • MB Membranes are composed of copolymers with polyester or fiberglass reinforcement.
  • Modified-Base sheets made of fiberglass and coated with MB asphalt.
  • Adhesive combined with a bonding agent. This creates a waterproof barrier.
  • Surfacing to increase weather-resistance and shield your roof from UV rays.

Modified Bitumen Roofing Systems

reliability, endurance, and sustainability

What is Modified Bitumen Roofing?

Modified Bitumen (MB) roofing is designed for low-slope roofs. This asphalt-based roofing membrane has been used in the United States since the 1970s.

A Five-Layer System

MB roofing achieves its impressive durability through a five-layer structure:

  • Insulation provides thermal resistance and stabilizes the roof’s temperature.
  • MB Membranes are composed of copolymers with polyester or fiberglass reinforcement.
  • Modified-Base sheets made of fiberglass and coated with MB asphalt.
  • Adhesive combined with a bonding agent. This creates a waterproof barrier.
  • Surfacing to increase weather-resistance and shield your roof from UV rays.

The Many Benefits of Modified Bitumen Roofing

  • Flexibility: Modified Bitumen has a flexible structure that makes it impact resistant and resistant to wild temperature changes. MB easily expands and contracts.
  • Tear Resistance: MB roofing’s fiberglass and polyester reinforcement layers make it tear resistant, giving it a strong leg up on other roofing options. This quality also makes it a great choice for low-sloped roofs that are frequently walked on.
  • Efficient Repair and Maintenance Options: MB roofs can easily be patched, so repairs are a quick and simple process when necessary. 
  • Energy Efficiency: MB comes with “cool roofing” options for top-surfacing that reduces the load on your indoor cooling system.
  • Waterproof: MB is naturally waterproof, making it a popular choice for commercial enterprises.
  • Warranties: MB systems are usually available with long-term warranties.

Schedule a Modified Bitumen Inspection Today

Native Roofing provides free roof inspections for commercial and residential clients alike. We can give you an accurate assessment of the roof’s overall condition, checking for hail damage, damaged caulk, missing shingles, cracked boots, and more. 

Trusted Clients and Partners

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Atlas

We are a certified installer of ATLAS roofing products. ATLAS stands for Accountability, Talent, Leadership, Agility, and Sustainability, which are all valuable traits that we also align ourselves with. ATLAS is a leader in polyiso roof insulation, shingles, underlayments, molded polystyrene, and more.

Polyglass

We are also a certified installer of Polyglass Roofing and Waterproofing Systems. Polyglass is a leading manufacturer of modified bitumen membranes and roof coatings for low and steep-slope applications.

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OK Construction Industries Board

We are also a certified installer of Polyglass Roofing and Waterproofing Systems. Polyglass is a leading manufacturer of modified bitumen membranes and roof coatings for low and steep-slope applications.

BBB Accredited Business

We are also a certified installer of Polyglass Roofing and Waterproofing Systems. Polyglass is a leading manufacturer of modified bitumen membranes and roof coatings for low and steep-slope applications.