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Chimney Height
A masonry chimney or a listed factory-build chimney must be the required height above
the roof and any other nearby obstructions. The chimney must be at least 3’ (90 cm)
higher than the highest point where it passes through the roof and at least 2’ (60 cm)
higher than the highest part of the roof or structure that is within 10’ (305 cm) of the
chimney, measured horizontally.
