What causes downdraught
Nearby trees, taller buildings, a low stack or the shape of the roof can cause wind to swirl over the pot and push air back down. A cowl designed to deflect that wind can improve things.
Assessment first
Smoke problems can also come from a blocked flue, poor ventilation in the room or the appliance itself. That's why we always assess before fitting. If the flue needs sweeping first, our sister business ChimneySweeps.ie can help.