A cricket on a roof is a small, peaked, tent-like or saddle-shaped triangular structure built on the uphill side of a large chimney, skylight, or vertical wall penetration. It features a central ridge line that splits water flow, with two sloped planes running downward and outward away from the obstruction. Covered in matching shingles or roofing material, it acts as a miniature secondary roof pitch designed to prevent stagnant water pooling and actively divert rainwater around the structural barrier.
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