Is your chimney chase the correct height?
The Chimney Safety Institute of America acquired this query by e-mail from a Certified chimney-sweep with regard to some householder:
“Just desired to get your take with this. This client for for approximately 2 weeks and The homeowner’ve been speaking today about repairing his fireplace. It comes from the peak of the home and is 27-28 inches high – instead of 36 inches.”
The sweep also was informed a building inspector stated the chimney’s peak was not unacceptable, since the 3-6-inch necessity wasn’t in existence when the home was assembled.
Our reply: In many elements of country, the termination stage – the distance involving the masonry leading along with the roofing – historically had been 24-inches, but 2 feet turned out to be “too limited” for many dwellings when it comes to making inadequate write or combating wind-caused downdrafts.
“When a home-owner uses their hearth, the correctly vented chimney flue may take smoke as well as the by-products of combustion up vertically and outside the chimney cover,” said Ashley Eldridge, CSIA Education Director. “But with masonry which is too-short, the wind could affect or hinder the exhausting of the masonry. Then you certainly may see issues such as insufficient draft and wind-induced downdrafts, so the homeowner will not possess the optimal encounter.”
Movie from the facebook page of CSIA: Requirements and fireplaces from our expert
Besides helping with venting, the benefit of the “3-foot” chimney comes from a fire-safety perspective; it allows that any warm spark that is carried from the hearth up through the flue has a much better chance to be extinguished before it leaves the chimney and comes connected together with the roof.