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Section 5.5 Utilities - Plumbing & Electrical reviews the planned penetrations for fresh and waste water, hot water heaters, electrical panels, wiring and outlets.

SPECIAL NOTE: Plumbing and Electrical work are regulated trades and should ONLY BE DONE by licensed professionals. Maintaining airtightness can be planned ahead of time - involve your electrician or plumber in the planning process to make sure it's done properly.