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What are the likely causes of a stepped crack up and away from the edge of a lintel? See the diagram below.

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What are the likely causes of a stepped crack up and away from the edge of a lintel?

Shearing causes stepped cracks and bending causes vertical cracks.

Shear vs. Bending Cracking

Shear Cracking Remediation

See: "Diagonal Cracks in Brick Walls and Its Measures" or "HeliBar Remedial" where the causes and methods for remediation are explained. Two different causes and means to prevent worsening of the problem.

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