Chimney Pots and Cowls

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 A Little About Chimney Pots and Cowls...

Chimneys, (stacks), can be damaged by age, weathering or a chimney fire. The presence of soot, which is highly corrosive, will also damage the chimney. This damage will of course be internal, so without the use of a CCTV inspection to prove damage, the best prevention is to have the chimney, liner and flue swept on a regular basis.

Damage to the chimney stack and flue can affect the performance of a chimney and reduce its ability to remove harmful gasses (see the effects of Carbon Monoxide) . The risks of damage can be lowered by regular visual inspections and immediate responses to maintenance issues. A Guild trained Sweep will gladly inspect and advise on chimney servicing issues and also on the sweeping frequency required dependent on the fuel burnt.

In the event of a chimney fire, The Guild of Master Chimney Sweeps recommend that a CCTV inspection and a chimney integrity test is carried out to prove the chimney is in a sound condition for use.  The chimney system should not be used until these tests have been completed.

The chimney stack, pot and cowl, (if applicable) are visually inspected by a Guild Sweep before any sweeping takes place. This can be performed using binoculars, or similar.  A damaged pot, or unstable cowl can cause extensive damage if either is dislodged during the sweeping process.  Either a damaged pot, cowl, or incorrectly fitted cowl have to be removed or replaced immediately.

Chimney Cowls

The cowl is a very important part of the chimney system.  If a cowl is wrong or fitted incorrectly then it may interfere with the passage of poisonous gasses. A professional Guild Sweep will be able to advise (and rectify) on the correct material, design and fit of the cowl to ensure maximum safety at all times.


For further advice or information or to book a consultation, call your Guild Sweep now on 07730-796201.