How close can two chimneys be?
The chimney should extend at least 3 feet above the roof surface it penetrates and 2 feet higher than any roofline or other obstacle within a horizontal distance of 10 feet. Taller chimneys make more draft, but chimneys exposed to outside cold don’t. See our section on chimneys.Click to see full answer. Considering this, why…
The chimney should extend at least 3 feet above the roof surface it penetrates and 2 feet higher than any roofline or other obstacle within a horizontal distance of 10 feet. Taller chimneys make more draft, but chimneys exposed to outside cold don’t. See our section on chimneys.Click to see full answer. Considering this, why do I have 2 chimneys?A flue is a venting system, each system needs its own so If you heat your home with oil or gas and have a fireplace you would have two flues. Often times they are in one chimney so if you were to look down the chimney it would be separated into two venting system inside one chimney.Furthermore, can a chimney be too tall? If a chimney is not tall enough – or if there are too many taller structures or trees nearby – it will not be able to draft properly. This not only affects your fireplace burn efficiency, but can also create safety problems. Beside above, can two fireplaces share the same flue? Your problem is not new but tends to be more common in tight, well built modern houses with multiple fireplaces sharing the same chimney. Fireplaces can’t share the same flue but can be run in the same chimney with their own flue liners.Do taller chimney draw better?Obviously, taller is better because a taller chimney provides a greater accumulated pressure differential due to the taller column of warm air inside the flue, each cubic foot of which is lighter than a cubic foot of cooler ambient air. Add them up. A 20 foot tall chimney draws twice as well as a ten foot tall chimney.
