Ponding water on a low-sloped roof can greatly reduce the performance and lifespan of the roof membrane. Tapered roof insulation systems reduce or eliminate ponding water when a roof deck does not provide adequate slope. This course describes the benefits of tapered polyisocyanurate insulation and discusses the profiles, panel repeats, and design options available. Also addressed are cricket installation guidelines, tapered roof system average R-values, and specification tips.

Upon completion of this course, the Learner should be able to:

• List the performance benefits of using tapered polyisocyanurate insulation, including environmental and thermal performance.
• Determine the R-value of a tapered insulation system to meet the desired insulation goals.
• Define key terms in designing a tapered roof insulation system that properly drains water, including profiles, slopes, and repeats.
• Compare methods of installing tapered roof insulation, taking into account drainage effectiveness, cost, and R-value.
• Discuss best practices when using crickets to improve roof drainage in valleys, low points, and rooftop curbs.

Approximately 1 hour. Delivered online, at your own pace.

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