I have a fireplace that in the middle of the room. The front and back are open.
When I start a fire there smoke creeps out into the room from the back. A rooftop
fan helps be is quite noisy.
I've been considering covering the back opening with glass. What kind of glass is
available and I should be asking?
Open a nearby window or outside door a bit during the first few minutes when you
light the fire. Once the chimney warms up slightly, you can close them. Poor
draft at startup is almost always due to slightly negative air pressure in the
house. Not at all uncommon. Once the chimney warms up, it can draw well enough
to overcome it.
Commodore Joe Redcloud
If the flue is unusually cold and I really feel the cold downdraft,
I put a ceramic heater in the firebox for 30 - 40 minutes to warm it up.
Then I hold rolled up newspaper near the flue to get the updraft started.
I have this problem at times as well. When the chimney is cold the cold air
just rushes down. What I have been doing with mixed success is using a lot
of tinder to get a hot fire going very fast to just minimize the amount of
smoke that comes in the room (and I also open a door already too). I like
this idea of using a heater to combat and reverse the airflow prior to
lighting and I will try this. But once the heater does its thing, why still
the need to wave the burning newspaper?
I have the same problem from time to time. I've found that if I turn
off my central heating system that it seems to help. I think when the
system is running it makes for just a slight vacuum in the house that
allows the air want to flow down the chimney. After the fire is going I
turn the system back on again and no problem.
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