The Glazing PM Problem No One Owns: Managing What Lives Between Trades
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The Risk That Doesn’t Appear in Any Contract
When it comes to glass and glazing projects, the biggest risks aren’t always written in the contract. They lurk in the spaces between trades—where responsibilities overlap, assumptions go unchecked, and coordination is implied but not assigned. Even when every discipline does its job perfectly on paper, failures can still emerge during installation. Why? Because the real challenge is managing what happens at the interfaces.
Where Approvals Become Failures
Glass and glazing systems depend on seamless coordination at their edges. Perimeter seals rely on waterproofing continuity, anchors depend on structural tolerances, and firestop conditions hinge on framing geometry. Each scope is reviewed and approved independently, but rarely is the interaction between these scopes scrutinized with equal rigor. A slab edge within tolerance can still exceed glazing limits. A waterproofing detail that stops at the backup wall can compromise curtain wall performance. These aren’t drafting errors—they’re coordination failures.
The “By Others” Trap
Familiar phrases like “by others,” “by adjacent trade,” or “per GC” are meant to clarify scope boundaries. In reality, they often defer responsibility. When no one explicitly owns an interface condition, it doesn’t disappear—it just waits. And when it resurfaces during testing, inspection, or installation, the cost is much higher. The issue isn’t exclusion; it’s undefined ownership.
Why Project Management Misses the Mark
Traditional project management systems track scopes, schedules, and deliverables. They’re great at monitoring what each trade is contractually obligated to do, but they often miss the coordination required between those scopes. Managing what lives between trades means reconciling tolerances before fabrication, confirming sequencing before concrete is poured, and identifying perimeter conditions that rely on two scopes working as one. This work is less visible than tracking logs or updating schedules, but it’s where risk accumulates.
Owning the System, Not Just the Scope
Glass and glazing projects rarely fail because a single trade didn’t perform. They fail because the system as a whole was never fully managed. The space between contracts may not be defined in any agreement, but it’s where performance either holds or breaks down. If that space isn’t actively owned during coordination, it will eventually be owned by the field—usually at a much higher cost. High-level project management isn’t about enforcing scope lines; it’s about ensuring the system those scopes are meant to create actually works.
