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    Home»Roofing Systems»Modified Bitumen

Modified Bitumen Roofing
A properly applied modified bitumen roof with its waterproof membrane can be the perfect solution for providing proper roof drainage and keeping the inside of your building dry.

Modified Bitumen (MB) roofing is an asphalt-based, close cousin of the Built-up-Roof (BUR) designed for buildings with low-slope or “flat” roof structures. Modified Bitumen Roofing Systems are designed to withstand harsh exposure to extreme environmental elements. With five layers of protection, it’s one of the most trusted flat roofing systems used in the industry today.

Allied Roofing  can handle new low-slope commercial roofing in Palm Beach, Miami, Fort Lauderdale, and the surrounding areas like Margate, Deerfield Beach and Coral Springs. We’re also adept at repairing existing modified bitumen roofs and re-roofing older low-slope structures.

Benefits of Modified Bitumen Roofing:

  • Polymer modification to asphalts result in greater elongation and the ability to accommodate building movement
  • Ability to manufacture rolls in plants, providing better quality control and quality assurance
  • Versatile application options: hot asphalts, cold adhesives or hot air
  • A variety of modified types and millages are available to better provide resistance against foot traffic and common rooftop abuse when needed
  • Modified Bitumen Roofing warranty options are available in 25 year, 20 years, 15 years, 12 years, and 10 years
  • Low installation costs
  • Modified bitumen roofing can also assist in lowering your building’s use of energy – a major concern during the summer heat of south Florida
  • Can  be a good choice if you want a material that can be installed without disrupting the day-to-day activities of your business
  • Used on low slope and flat roofs
  • Lightweight, roofing material weighs around 2 lbs. per square foot
  • Durable, high tensile strength, resists splits and tears
  • High resistance to roof-top traffic
  • Easily maintained, can be coated with elastomeric or aluminum paint to reflect UV rays and South Florida's hot weather conditions

The framework for Modified Bitumen Roofing Systems is a five-layer combination of roofing components.

  • Insulation – Used to provide “R” value, or thermal resistance, for temperature stability of the roof system
  • Modified Base Sheets or Plies
  • Modified Bitumen Membranes – Factory fabricated sheet membrane composed of co-polymer reinforced with polyester or fiberglass
  • Adhesive – Waterproofing material with a bonding agent applied either hot or cold
  • Surfacing – Provides UV protection and weathering resistance

Modified Bitumen Roof Systems are available in two types:

  • Styrene Butadiene Styrene (SBS) - typically installed with hot asphalts or cold adhesives
  • Atactic Polypropylene (APP) - is almost always installed utilizing the torch method

Both Modified Bitumen Roof System types can be surfaced with either factory surfacing ceramic granules or with metallic laminants such as copper or stainless steel. If a capsheet is not utilized, aluminum coatings or white acrylics can be applied to enhance the systems UV and oxidation resistance.

Roofing Systems

  • Roof Shingels
  • Roof Tiles
  • Metal Sheet Roofing
  • Flat
  • Modified Bitumen
  • Build-up
  • Thermoplastic (TPO, PVC)
  • Roof Coatings

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Florida locations: Coconut Creek, Cooper City, Coral Springs, Dania, Davie, Deerfield Beach, Fort Lauderdale, Hallandale, Hillsboro Beach, Hollywood, Lauderdale, Lauderhill, Lighthouse Point, Margate, Miramar, Oakland Park, Parkland, Pembroke Pines, Plantation, Pompano Beach, Sunrise, Tamarac, West Hollywood, Weston, Wilton Manor, Miami, and Boca Raton

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