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🔗 Sequenceconstructionexterior

Building Envelope Sequence

Updated Mar 25, 2026
Envelope installation order: 1) Structural sheathing, 2) WRB/air barrier, 3) Window/door rough openings flashed, 4) Windows installed, 5) Continuous insulation (if required), 6) Cladding support, 7) Cladding installation, 8) Penetration sealing, 9) Testing.
TAGS
envelopeWRBwindowcladdingair-barrier
DETAILS
phase
BUILD
category
Envelope
successor
Interior finishes
predecessor
Framing + roof dried in
critical holds
["WRB inspection","Window flashing inspection"]
weather dependency
WRB before rain exposure
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.
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