Does that stuff really work or just bung up the works?
Brian

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The Sofa of Brian Gaff...

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"Andy Bennet" wrote in message
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On 10/02/2019 14:14, Sara Lavery wrote:
Potterton puma 80e makes a really loud banging noise when the heating has
been
on a while
https://www.homeownershub.com/img/hg


Chuck some boiler silencer into your system:-

https://www.wickes.co.uk/Adey-MC2-Ma...500ml/p/118635

others are available