Noisy chimney cowls

Noisy chimney cowls

Noisy chimney cowls

I've had some chimney cowls fitted a couple of days ago. They are small metal, mushroom shaped things. Added to stop the rain coming in to my recently decommissioned fireplaces.
However, with the wind they are extremely noisy. It literally sounds like thunder or a helicopter passing. Yes we've having some strong winds at the moment but it is pretty constant and VERY loud.
Any ideas on an alternative suggestions please?
I don't have a pic to hand at the mo but will get one when I can.
Thanks

by RrogerD

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