Posted by  Jacques Pochoy on December 30, 2001 at 14:59:34:

In Reply to:  Re: Dual Fireplace Idea posted by Paul Malo on December 30, 2001 at 14:44:06:

I foresee another problem if the two of them are in the same room... An air pressure problem!

To do a "working chimney" you need fresh air at the base of the fireplace and the height itself of the chimney creates a draft going upward, easing the lighting of the fire and preventing smoke to get into the room.
The big blackened thaw panel should be fixed at a few cm over the firestone and from the back of the chimney, allowing an air circulation behind it, thus increasing the chimney effect...

Now imagine you started a fire in one of the two chimneys, the other one can cause (because of outside winds and pressure) the first to "back draft" (sorry for my english..:-( ) the smoke in the room...!

In old houses fireplaces were lit at different times in the day, and in separate rooms.
In the Alsatian house, there was one big stove and most rooms were built around it, each sharing the heating of a unique fire...:-)

Responses:

• Re: Dual Fireplace Idea Barry 21:45:18 12/30/2001 (3)
  • Re: Dual Fireplace Idea - Poplar Forest Kevin Matthews 00:06:56 12/31/2001 (2)
    • Re: Dual Fireplace Idea - outside air supply JWmHarmon 06:54:13 1/02/2002 (1)
      • Re: Dual Fireplace Idea - outside air supply Paul Malo 07:17:21 1/02/2002 (0)

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