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Chimney & Fireplaces/adding fireplace to existing fireplace


We are adding rooms to our two story home and want to make the existing fire place a double fireplace also opening into the new room addition. It is elevated 18 inches from the floor. The architect seems reluctant to tear into the existing brick chimney.  I know venting can be issue but believe there are exhaust fans?  Are there other specific probable problem areas?  Thanks

Hi Harvey,

Converting a single-sided masonry fireplace to a multi-sided fireplace is problematic at best and impossible at worst.

The biggest issue is the cross-sectional area needed to properly vent the new double-sided fireplace.

Yes, there are exhaust fans available, but it would require a battery backup and an audible alarm system for woodburning.

It is generally my recommendation that this not be attempted.

Over the past 36 years, I've seen less than a half-dozen cases where this type of conversion was potentially possible.  Of those, after we ran the numbers on labor and materials, we completed 1.

Thanks for using AllExperts.Com and good luck with your project.

A. Bart Ogden, President
Home Safe Hearth & Chimney, Inc.
Wichita, KS
Voice 316-265-9828
Fax 316-633-4512

CSIA Certified Chimney Sweep #2653
CSIA Certified Dryer Exhaust Technician #10
NFI Certified Wood Specialist
NFI Certified Gas Specialist
NFI Certified Pellet Specialist
NFI Master Hearth Professional
NFI Instructor
NCSG Technical Advisory Council Member
2011 White House Chimney Sweeping Team Member

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Bart Ogden


I can answer questions related to chimney and fireplace cleaning, construction and repair as well as questions related to the performance of chimneys and fireplaces. I can also answer questions related to clothes dryer vent cleaning and repair. Additionally, I can field questions related to masonry repair.


Experience in the area:
28 years experience in the chimney service/installation/repair field
President, Home Safe Hearth & Chimney, Inc. Wichita, Kansas

Professional Organizations:
Member, National Chimney Sweep Guild (NCSG)
Member, Hearth, Patio & Barbecue Association (HPBA)
Member, Kansas Guild of Professional Chimney Sweeps (KGPCS)
Member, Midwest Chimney Safety Council (MCSC)
Member, Kansas Association of Real Estate Inspectors (KAREI)
Past At-Large Director of the National Chimney Sweep Guild
Past At-Large Director of the Chimney Safety Institute of America
Past Secretary, National Chimney Sweep Guild
Past Secretary, Chimney Safety Institute of America
Member, National Chimney Sweep Guild Technical Advisory Council
Member, Chimney Safety Institute of America Certification Committee
Past Chairman, CSIA Chimney Safety Education Brochures Committee
Past Chairman, NCSG Nomination Committee

SWEEPING Magazine, The Journal of Chimney & Venting Technoloty, A Publication of the National Chimney Sweep Guild
SNEWS, The Chimney Sweep News
THE KANSAS SWEEP, The Voice of the KS Guild of Professional Chimney Sweeps

BA, Wichita State University
C.S.I.A. Certified Chimney Sweep
C.S.I.A. Certified Dryer Exhaust Technician
N.F.I. Woodburning Specialist
N.F.I. Gas Specialist
Chimney Diagnosis & Documentation Seminar
Ahren's Masonry Restoration School Graduate
Advanced Gas Certification
Master Gas Certification
Licensed Mechanical Contractor
Pellet Appliance Specialist
Venting Design Specialist
Dale Carnegie Course Graduate

Awards and Honors:
Superior Dealer Award, Ventinox Chimney Lining Systems

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