Thread: Black mould on underside of roof felt
View Single Post
  #11   Report Post  
Posted to uk.d-i-y
Mathew Newton[_2_] Mathew Newton[_2_] is offline
external usenet poster
  
Posts: 524
Default Black mould on underside of roof felt
On Monday, 13 May 2019 08:17:26 UTC+1, charles wrote:

Is there an open water tank feeding a heating system?

No, we have a sealed system (and unvented cylinder for HW).
Reply With QuoteReply With Quote