I want to use a fireplace in my veranda for a woodstove. It exceeds + 40 cm from the roof of the veranda and is offset from the house. It is physically impossible to go beyond the roof of the house (raises 5m without support against a wall) and I use this fireplace in the current state of things.
I am sorry to have to confirm that the exit of your chimney must exceed by 40 cm the roofing of your house. Not only is it unlikely the chimney of your porch pulls properly, but you risk, in addition to the toxic fumes entering your home if windows are overhanging this chimney exit. I do not recommend using it. Preferably use a pellet stove.
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