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[Component] Plumbing and wiring [Criteria] 
Insulation is placed between outside and pipes. Batt insulationInsulation, usually of fiberglass or mineral wool and often faced with paper, typically installed between studs in walls and between joists in ceiling cavities. Correct installation is crucial to performance. is cut to fit around wiring, and plumbing or sprayed/blown insulation extends behind piping and wiring.
What's All This Hot Air About Air-Sealing Measures? | GreenBuildingAdvisor.com
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