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Interface Failures: Fiber Cement Boards at Windows, Doors, and Movement Joints

Interface Failures: Fiber Cement Boards at Windows, Doors, and Movement Joints

In fiber cement façade systems, boards rarely fail in isolation.
When defects appear—cracking, staining, water ingress, or distortion—the root cause is most often the interface, not the board.

Windows, doors, and movement joints introduce discontinuities in structure, movement, and moisture behavior. If these interfaces are treated as cosmetic details rather than structural transition zones, long-term failure becomes almost inevitable.

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