Credits: 1 AIA/HSW; 0.1 IACET CEU*; 1 IIBEC CEH
Coatings aren’t just for maintenance. Liquid-applied membranes (LAM) are being used more and more as the weatherproofing layer of a roof system for new construction, reroofing and re-covers. While a LAM can use the same materials as a traditional roof coating, they are much different. The building code (finally!) separates liquid-applied coverings and roof coatings; the specifics will be provided. The types of materials used for LAMs and their material characteristics—focusing on polymer-based products—will be examined. Roof system design, approval listings, as well as proper application methods will also be discussed. This presentation will help anyone involved in the design and specification, installation, or ownership of LAM-based roof systems.
Learning Objectives:
- Discuss the building code requirements for new construction, reroofing and re-covers for liquid-applied membranes and the related definitions within the codes.
- Classify material types and discuss the characteristics of common materials used as liquid-applied membranes and when to use them.
- Describe the testing requirements and assembly components (including substrates) for liquid-applied membranes when used as part of an approved roof covering.
- Discuss the specific steps for proper application of liquid-applied membranes and recognize the importance of proper substrate preparation.
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