Home›Knowledge›MEP Rough-In Sequence
🔗 Sequenceconstruction

MEP Rough-In Sequence

Updated Mar 26, 2026
Mechanical/electrical/plumbing rough-in order: 1) Underground plumbing, 2) Slab pour, 3) Wall framing, 4) Plumbing rough (top-out), 5) HVAC ductwork, 6) Electrical rough, 7) Low-voltage/data, 8) Fire sprinkler, 9) Insulation, 10) Inspections before close-in.
TAGS
MEPrough-inplumbingelectricalHVAC
DETAILS
phase
BUILD
category
MEP — Rough-In
successor
Insulation → drywall
predecessor
Framing + sheathing complete
critical holds
["Underground plumbing inspection","MEP rough-in inspection"]
RELATED KNOWLEDGE
🔗 Sequence
Foundation → Framing Sequence (Hold Point: Foundation Inspection)
Framing cannot begin until foundation inspection passes. Concrete must achieve minimum 75% design strength before loading. Foundation inspection is a hard hold point in every jurisdiction.
🔗 Sequence
Rough MEP → Insulation Sequence (Hold Point: Rough-In Inspection)
Insulation and drywall cannot begin until rough mechanical, electrical, and plumbing inspections pass. All three trades must complete rough-in and be inspected before walls can be closed.
📋 Code
IBC Section 1107 — Accessible Unit and Dwelling Unit Elements
Requires accessible common use elements within individual residential units.
📋 Code
IECC Section 603 — Energy Cost Budget Method
Provides performance-based alternative to prescriptive energy code requirements.
🔗 Sequence
Drywall → Paint/Finishes Sequence
After drywall hung and taped: prime, texture, paint. Flooring after paint (or protect if before). Cabinets after drywall, before countertops. Trim/millwork after paint. Final clean before CO inspection.
📋 Code
NFPA 99 — Health Care Facilities Code
Comprehensive code for safety systems in hospitals and medical facilities.
← Back to Knowledge Garden