Control joints prevent cracking and buckling due to thermal movement, substrate shrinkage, and structural shifts. Learn spacing guidelines by cladding type and detail options.
Overview
Exterior cladding expands and contracts under solar and seasonal loading. Control joints help relieve stress and guide crack locations. Joint spacing varies by material and substrate behavior.
Spacing by System
- Stucco/EIFS: Every 144 sf or at 18′ max in any direction
- CMU walls: 20–25′ o.c. vertically or at wall height
- Metal panels: Based on module spacing and substrate framing
- Precast: At all panel joints, edges, corners, and interface with dissimilar materials
🔍 Quick Picks
- EIFS Control Joint Bead: Vinyl EIFS Control Joint
- Precast Sealant Backer Rod: Closed Cell Backer Rod
- Flexible Metal Trim: Aluminum Expansion Trim
Detailing and Waterproofing
Include sealant joints with backer rod for waterproof joints. Consider firestopping requirements and support bracket integration at these lines. Mockup and test joint details in critical areas.
Conclusion
Control joints are essential to system longevity. Know your material limitations and integrate movement joints with thermal and water control systems for high-performance results.
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