Modidied Bitumen Roofing

Designed for buildings with low-slope or flatter roof structures, Modified Bitumen Roofing has a proven track record of performance. Combine this versatile roofing system with GA Roofing & Repair’s years of experience and you’ll enjoy a worry-free product that will offer years of durable performance that will stand up to Georgia’s harsh climate. And with various coatings available, you can choose from “cool roof” options or select a color to complement any building exterior.

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. Engineered modified bitumen roofing membranes originated in Europe in the mid 1960’s and have been used successfully in the United States and Canada since approximately 1975.

Increased resistance to brittleness at cold temperatures, greater flow resistance at high temperatures, and increased elasticity can be achieved by blending synthetic rubberized polymers with asphalt in lieu of modification by the blowing process used for BUR asphalt. There are numerous surfacing options for this system which include a factory applied mineral surface, gravel surface, including “cool roof” coatings which are highly-reflective to save on building cooling costs. Mineral-surfaced MB products are typically furnished with white granules, but are also available in designer colors to match asphalt shingles or to otherwise compliment the building design.

Modified Bitumen Roofing gives designers and installers an even broader array of options than BUR. MB may be installed by the torch-application method, or “hot-mopped” like BUR, or applied with “cold-process” adhesives. The latest innovation with MB is the self-adhering sheet. Using special combinations of polymers to modify the underside of the MB sheet, the rolls are manufactured with a release paper. The installer removes the release paper and as the sheet is rolled out, it adheres itself to the substrate. This method eliminates the risks associated with the use of torches, hot asphalt, and is completely free of VOC (volatile organic chemicals) fumes during and after application.

GA Roofing & Repair is a fully licensed & certified installer of Modified Bitumen Roofing products and is backed by all major manufacturers, let us help you with your next Modified Butumen Roof or repairs to your existing Modified Bitumen Roof.

Benefits of Modified Bitumen Roofing
  • Proven track record of performance
  • Superior waterproofing characteristics
  • Broad range of application methods
  • Wide choice of top-surfacing, including “Cool Roofing” options
  • With insulation, provides an even better-performing building component
  • High tensile-strength
  • Available as part of a fire, wind, and/or hail rated roofing system
  • Competitive life-cycle cost
  • Available with flame-free and VOC-free installation
  • Long-term warranties are available with many MB systems
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