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Cowls can stop downdraughts, keep rain out and deter birds, but the right design depends on your flue and exposure.
Gaps between plaster, brick and flue pipes can cause draughts and damp, so use suitable fire-safe sealants and fillers.
Basic rods, brushes and a good torch help you inspect flues safely, though sweeping a working chimney usually needs a qualified professional.
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Look for soot buildup, cracked bricks, loose pots and water stains, then arrange a professional sweep if anything seems wrong.
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Improving Ventilation Around a Log Burning Stove
Downdraught can push smoke back into a room due to nearby trees, tall buildings, incorrect cowls or an oversized flue.
