Chimney in loft

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Hi sorry if this has been brought up before. I got my chimney dropped below roof level in April, I was wondering how best to ventilate it with winter coming up as I can't find anything concrete.

Its an internal chimney which runs through middle of the house and ends in the loft, it has 2 flues and is currently just open to the loft and the ground level vents are shut as I didnt want warm air travelling upto the loft.

I've got conflicting info so I was just wondering if I need to seal and insulate the remaining brick stack in the loft? Do I need to add any vents to the remaining stack in the loft or open up any vents below?

Thanks for any advice
 
You don't need to vent a redundant flue that terminates into a loft. In fact you should not vent into any roof void - condensation, and fire risk.

The normal flue condensation risk is removed or at least vastly reduced with internal chimnies, so you should be OK to seal the air vent at the bottom and top.
 
You don't need to vent a redundant flue that terminates into a loft. In fact you should not vent into any roof void - condensation, and fire risk.

The normal flue condensation risk is removed or at least vastly reduced with internal chimnies, so you should be OK to seal the air vent at the bottom and top.
Thanks for the reply. So should I close both vents downstairs and upstairs and then cover the flue openings in the loft?
 

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