Use It or Lose It—Re-roof or Re-cover of Existing Roof Systems

Options and requirements for re-roofing and re-cover of existing decks and systems
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Webinar On-Demand
Sponsored by Johns Manville
Presented by Dwight Stone

Learning Objectives:

  1. Evaluate an existing roof to determine long-term solutions: re-cover, replacement or coating.
  2. Explain the effects a re-cover or replacement decision will have on your existing system.
  3. Explain requirements to meet building code and manufacturers’ requirements.
  4. Compare different membrane and insulation product types for advantages and disadvantages.


This test is no longer available for credit

This webinar will discuss the different options you have when it comes to existing low-slope roofing systems. Learn more about the evaluation of an existing low-slope roof and what the next steps would be to decide if the roof can be re-covered, replaced or if you can use a coating to extend the life of the roof. Attendees will learn the effects a re-cover or replacement decision will have on your existing systems. We will discuss the importance of understanding requirements to meet building code as well as the manufacturers’ requirements. We will also cover the advantages and disadvantages of different membrane and insulation product types. By the end of this course, you will have insight on roof evaluations and the different options you have when taking the next steps on updating your existing roof system.



Dwight Stone has had a successful career as project manager and specification consultant for architectural firms in Denver since 1997. He completed his NCARB requirements in 2004, and holds an MBA from the University of Colorado. Dwight is also a national member of CSI and IIBEC.


Johns Manville

Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium-quality products for building insulation, mechanical insulation, commercial roofing and roof insulation, as well as fibers and nonwovens for commercial, industrial and residential applications. JM serves markets that include aerospace, automotive and transportation, air handling, appliance, HVAC, pipe and equipment, filtration, waterproofing, building, flooring, interiors and wind energy. In business since 1858, the Denver-based company has annual sales over $3 billion and holds leadership positions in all of the key markets that it serves. Johns Manville employs 8,000 people and operates 42 manufacturing facilities in North America, Europe and China. Additional information can be found at


Originally published in September 2019