Why is a cowl important…

Jackdaw nest

This is just a small amount of what comes down a chimney after a Jackdaw has used it as his home for a while. After checking that the nest was not in use I set to work pulling enough debris to fill two one ton building sacks!

I would always recommend fitting a bird guard cowl to chimney pots so as to stop this happening. The cost of installing a cowl can be recouped very quickly as it can take many hours to remove a nest and thus incurs a considerable extra charge.