AL Insulation Practice Questions - Alabama Insulation Contractor Examination Exam

Selecting a batt labeled R-13 for a standard 2x4 (3.5-in.) wall cavity is appropriate because:

R-13 batts are manufactured to fill typical 2x4 cavity depth without harmful over-compression R-38 batts always fit better in 2x4 walls Any R-value batt works equally in any cavity depth 2x4 walls require minimum R-60 batts only

Correct Answer:

R-13 batts are manufactured to fill typical 2x4 cavity depth without harmful over-compression

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