Insulation batts are compressed behind wiring and leave gaps at the edges. What performance issue results?
Correct Answer
C) Reduced R-value.
Compressed or gapped insulation reduces effective thermal performance.
Why This Is the Correct Answer
Compressed or gapped insulation reduces effective thermal performance.
Why the Other Options Are Wrong
Option A: Duct insulation.
Duct insulation. addresses a neighboring field issue, but not the condition or method control required for thermal insulation.
Option B: Head flashing.
Head flashing. addresses a neighboring field issue, but not the condition or method control required for thermal insulation.
Option D: Install integrated step flashing.
Install integrated step flashing. addresses a neighboring field issue, but not the condition or method control required for thermal insulation.
Memory Technique
Compressed is the clue; gapped is the method check for Checking Wall.
Reference Hint
Study anchor (closed-book): memorize Thermal insulation from California Energy Code, California Code of Regulations Title 24; CSLB. / Title 24 California Energy Code insulation installation quality concepts; know the rule or calculation trigger without relying on exam-room lookup.
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