Insulation batts are compressed behind wiring and leave gaps at the edges. What performance issue results?
Correct Answer
C) Reduced effective thermal resistance of the assembly.
Gaps interrupt the insulation layer, and compression reduces the installed thickness. Together these defects reduce the assembly’s effective thermal performance relative to proper installation. Fit batts around obstructions at their specified thickness rather than bunching them behind wiring. Source: https://www.energy.gov/sites/default/files/2024-07/scep-job-aids-english-complete.pdf
Why This Is the Correct Answer
Gaps interrupt the insulation layer, and compression reduces the installed thickness. Together these defects reduce the assembly’s effective thermal performance relative to proper installation. Fit batts around obstructions at their specified thickness rather than bunching them behind wiring. Source: https://www.energy.gov/sites/default/files/2024-07/scep-job-aids-english-complete.pdf
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