Expansion Joint Cover Coordination Guide
How to review expansion joint covers across architectural finishes, structure, fire ratings, waterproofing, roofs, floors, walls, and ceilings.
Expansion joints allow building movement, but the cover system has to preserve the function of every assembly it crosses. That includes floors, walls, ceilings, roofs, waterproofing, fire ratings, air barriers, finishes, and exterior cladding.
The drawing review should follow the joint continuously through the building instead of checking each detail separately.
Where to Look
Expansion joint information may appear on structural plans, architectural details, finish plans, roof plans, wall sections, life-safety plans, and product specifications. Incomplete coordination between those sheets is common.
- Joint width and expected movement.
- Floor-to-wall-to-ceiling continuity.
- Fire-rated joint assemblies where rated separations are crossed.
- Roof membrane, flashing, and drainage at the joint.
- Exterior wall air and water barrier transitions.
- Finish transitions, wheel loads, and accessibility at floor covers.
Helonic Review Fit
Helonic is useful because expansion joints are a cross-sheet problem. The platform can help flag inconsistent details, missing references, and conditions where the joint interrupts another required system.
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