Rough-In
Initial installation of plumbing, electrical, and HVAC systems before walls are closed
Rough-In
Rough-in work represents a critical phase where all mechanical, electrical, and plumbing systems are installed in their rough form—pipes, wires, and ducts run to approximate locations but without fixtures, outlets, or registers installed. This work must be completed and inspected before insulation and drywall can proceed. Plumbers install supply and drain lines, electricians run wiring and boxes, and HVAC contractors install ductwork. Accurate rough-in placement ensures fixtures and outlets end up exactly where planned.
Why Timing and Coordination Matter
Rough-in requires careful coordination between trades. Plumbers typically go first, followed by electricians and HVAC, with each trade avoiding conflicts with others' work. Changes after rough-in inspection become expensive—moving a drain line after walls are closed requires opening walls and re-inspection. San Diego building codes require rough-in inspections before covering work, ensuring all installations meet code requirements for safety, spacing, and proper installation methods. Plan fixtures and outlets carefully during design to avoid costly changes.
Common Rough-In Elements
- Plumbing: Water supply lines, drain/waste/vent pipes, shower valves, toilet flanges
- Electrical: Wiring, junction boxes, outlet and switch boxes, panel circuits
- HVAC: Supply and return ducts, registers, thermostats, equipment connections
- Low-voltage: Data/ethernet cables, security system wiring, speaker wire
- Coordination: Proper spacing and placement avoiding conflicts between systems