Hello!
I am going to make a new hole in the chimney to connect a kitchen fan. The duct continues down to the basement. Can I just connect directly to the duct on the ground floor, or do I need to build a barrier in the duct so that the smoke doesn't go down to the basement? If a barrier is required, is a cleaning hatch needed before the barrier, or is the connection for the kitchen fan sufficient?
Thanks in advance!
Jonas