Ins and Outs of Reroofing
Navigating Code Compliance, Assessment and Design for the Re-cover or Replacement of Existing Roofs
Sponsored by GAF | Siplast | Presented by Mary Beth Reed, RRO and Matt Braun, P.E.
Live Webinar Airing on September 22, 2026 at 02:00 PM ET
Reroofing of existing buildings—both replacement and re-cover—is approximately 75 percent of the roofing industry. Understanding how to determine whether a building requires a roof replacement or re-cover is key to a successful reroofing project. This presentation will cover reroofing-specific code requirements, investigation methods, and analysis of exisitng decks and insulation, as well as the necessary aspects of wind resistance and energy efficiency upgrades that should be considered. Finally, case studies will be used to showcase several different technologies available for reroofing.
Photo courtesy of GAF
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Mary Beth Reed, RRO, is the Southeast Building Design Manager for GAF|Siplast. Having worked in commercial roofing for the past 12 years, on the contracting side prior to the manufacturing side, Mary Beth has a unique perspective balanced between building science principles and real life applications. This, along with her extensive knowledge of roofing systems and Codes, allows Mary Beth to help the specification community with building design solutions that make sense, are based on best roofing practices, and that work. Mary Beth’s passion for educating, empowering, and mentoring others is demonstrated by her activity in a number of associations including IIBEC (Education Director Florida Chapter), AIA, CSI, National Women in Roofing (Past President of NWiR South Florida), Roofing Contractors’ Association of South Florida, and as an industry representative for the Broward County Board of Rules and Appeals. |
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Matt Braun, P.E is a Building Design Manager for GAF in the West Region of the US. Matt is a licensed Professional Engineer in multiple states (AZ, CO, & TX) and holds a bachelor’s degree in Civil Engineering from Texas A&M University. With over 13 years of experience in building enclosure design and consulting, his background includes waterproofing design in multi-family construction, compliance and forensic testing of roof and exterior facade assemblies, consulting on new construction and restoration projects, and review of roofing and building designs with designers and installers. Matt is also an active member of IIBEC (Colorado Chapter President 2023 & 2024) and NRCA. |
The Building and Roofing Science team offers regional expert building enclosure collaboration through design, specification, and educational support for customers of GAF and Siplast, both Standard Industries companies. GAF is North America’s largest roofing manufacturer with more homes and businesses in the U.S. protected by a GAF roof than any other product. Siplast, a leader in building enclosure systems, offers a portfolio of advanced, high-performance SBS-modified bitumen, PMMA liquid-applied, PVC KEE, lightweight insulating concrete, wall air & water barrier systems, and amenity/vegetated systems.
Originally published in Building Enclosure
Originally published in July 2026
LEARNING OBJECTIVES
- Cover the building code requirements for reroofing.
- Discuss different technologies available for reroofing and recovers and considerations when evaluating options.
- Describe potential performance impacts of a new roof system on an existing building.
- Identify opportunities to enhance wind uplift and edge metal design during reroofing design.
