There are various types of bird guards and cowls. Below are just a few of the most common ones we use. Fully insured and trained we are happy to give you free advice on the most suitable one for your home. Most cowls are designed with a hood to keep the rain out and a mesh to keep out the birds. These prevent birds building nests in the chimneys which can cause many problems as the nest blocks the chimney flue. A nest in the chimney can cause smoke and carbon monoxide to enter your room and a possibility that the nest catch fire. Birds can also get trapped and die falling down your chimney brining soot with them which can leave a mess to clear up.
If a nest is left this will need to be removed by a chimney sweep which can be time consuming and involve additional costs which can all be avoided by having a bird guard or cowl fitted.
ROTORVENT OR ASPIRATOR CHIMNEY COWLS
This is a revolving cowl made of stainless steel and is driven by the wind to limit downdraft and increase the draw. We recommend these are cleared yearly to avoid being clogged up with deposits and checked that it can spin freely.