How Multi-ply Membrane Systems Give Your Roof Extra Protection
Bituminous systems proven to last
Sponsored by Johns Manville
Learning Objectives:
- Review the history of modified bituminous roofing membranes, including how and why they came to be, focusing on market conditions and raw material availability and performance.
- Explain the four SBS system application methods and two APP system application methods and how a facilities location, project timeframe and site conditions could impact which method best fits your project.
- Gain an understanding of the physical performance of these roofing membranes, what drives that performance and the various choices available that differentiate the available products in the roofing system family.
- Match project design criteria, membrane options, application options and long-term performance to provide multiple solution offerings to your building owners and communicate the differences between these good, better or best type offerings.
Credits:
This test is no longer available for credit
The bituminous roof system has a long history and has improved through the years. A variety of reinforcements, types of sheets and different surfacings make these systems robust, versatile and proven. These membranes can be installed using a wide variety of methods and can be finished off with flashings around the more intricate parts on the roof. Learn more about how these systems can protect your roof.

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Joel Asrael has a MS in mechanical engineering from Arizona State University and brings with him extensive experience with energy efficiency for commercial buildings. He is a national member of AEE, ASHRAE, CSI and RCI. |
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Johns Manville, a Berkshire Hathaway company, is a leading manufacturer of premium commercial roofing products from bituminous to single-ply and liquid applied, and everything in-between. JM has depth and expertise in the building sciences with top professionals available to help with your building projects. For more information, visit www.jm.com |
Originally published in September 2018