Proactively Address Moisture in Roof Assemblies

Moisture within roof assemblies, or the concern over such, can be a major focus of discussion for the design/build community due to project schedule delays and disruptions to businesses and institutions. Despite the disruption to projects this issue causes, there remain significant misunderstandings across the industry regarding product warranties, field moisture tests, and just how long it takes concrete “to dry.” This course discusses common terms associated with concrete that are often misused and misunderstood. Further, the various sources of roof system moisture are identified with clear recommendations given as to how a specification can proactively address potential moisture-associated problems within a roof assembly.

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

• Examine the role of water in concrete and address misunderstandings about processes of hydration, drying, and curing of a concrete slab.
• Identify various sources of roof system moisture and discuss how they can be addressed to protect a structural roof concrete deck and prevent failure of the roofing assembly.
• Explain why moisture vapor reduction admixtures (MVRAs) effectively shut down moisture vapor movement through concrete.
• Specify appropriate design processes, procedures, and site conditions that can minimize roof system installation delays due to excess concrete slab moisture, subsequent bond failures, and design team liability for each.

Approximately 1 hour, 15 minutes. Delivered online, at your own pace.

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