Tag Archives: Wall assembly

NFPA 285 engineering judgments

The IBC is recognized as the model building code for commercial construction, which is then adopted by state and local jurisdictions. Through NFPA 285, increasing use of energy efficient continuous insulation (ci) and innovative wall assemblies places a greater emphasis on fire performance of exterior walls.

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Back to basics: Differences between air and vapor barriers

Building industry professionals largely agree on the importance of moisture control methods, but there is frequent confusion about the use of vapor and air barriers. To make the right decision on which methods and materials to include in a building envelope, it is critical to understand the simple, yet significant, differences between air and vapor barriers, and their role as part of an effective system.

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