What concept describes sound leakage through gaps around electrical boxes or utility penetrations?

Answer

Flanking

Flanking is a crucial, often overlooked aspect of professional sound isolation, representing the path of least resistance for sound energy to bypass primary barriers. Even if substantial mass (like thick drywall) is used in wall construction, the entire system is compromised if there are unsealed gaps or weak points where sound can leak through or around the intended barrier. This includes minute spaces around electrical boxes, unsealed utility penetrations, or poor door seals. Recognizing and eliminating these flanking paths—often by using acoustical caulk or specialized sealing wraps—is considered just as important as adding mass, forming an advanced, holistic requirement for achieving true, predictable soundproofing performance.

What concept describes sound leakage through gaps around electrical boxes or utility penetrations?

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