Modified Bitumen Roofing

Modified Bitumen is an evolution of asphalt roofing used in flat roofs. Asphalt has been used in roofing since the dawn of the 20th Century. Originally, asphalt itself was not very durable, prone to leakage, and did not hold up well in the elements – especially with hail. Modified Bitumin is an upgraded version. It is made from asphalt and a variety of rubber modifiers and solvents.

There are several ways of connecting pieces of this material, although heat application is the most common. Modified Bitumen roofing is also known as “torch-down” roofing. In a heat application process the seams are heated to melt the asphalt together and create a seal.

Modified Bitumin FAQs

A Modified Bitumen roofing system is an evolution of asphalt roofing. It is made from asphalt and a variety of rubber modifiers and solvents. Older asphalt roofs were prone to leaking and did not hold up well in rough weather. Modified Bitumen roofing systems are not as prone to leakage, are designed to withstand hail and heavy storms, including high winds. 

Modified Bitumen roofs have been around longer than many other roofing types. They last typically 15-20 years, even in heavy weather.

The average costs of Modified Bitumin varies depending on the type of materials used in installation. The prices typically run from $1.50 to $3.00 per square foot. This is a much more affordable material than TPO, PVC, or EPDM. A large commercial roof in Modified Bitumen can run between $2,000 and $5,000.

Like many other roofing materials, Modified Bitumen can be patched. However, it is always recommended you get a professional to assess and repair and damage to your roof.

Skyline Contractors is your certified professional roofing contractor.

Johns Manville
Carlisle Syntext Systems

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