How much does it cost to install a chimney?
When a homeowner thinks of the word "chimney" they might automatically envision the masonry structures (usually relying on bricks and mortar) that rise from millions of rooftops around the world. There is another type of chimney available, and this one costs less and is much easier to install and maintain. It is known as the "engineered" chimney, and for the purpose of this discussion we will consider the costs and materials required for the installation of a 10' engineered chimney.
What could an engineered chimney be used for? Generally, the average pre-existing home will already have a masonry chimney which was originally installed for the heating system, but many owners purchase supplemental heating fixtures such as wood stoves, and this is usually the reason for the new chimney. There are also times when an older brick and mortar chimney fails, and the engineered components are suitable for such projects too - though a complete replacement and rebuild has much more expansive carpentry and construction costs.
The average "per foot" cost on an engineered system, according to YourFireSource.com ranges from $95 for the shorter lengths to as little as $60 for longer systems.
The average materials and prices for a new 10' chimney would include:
- The Materials - whether the homeowner wants to tackle the project on a DIY basis or hire a professional carpenter for the installation, they will need a ceiling cover base support, a starter section, an attic insulation shield, a boot flashing, a storm collar, a round termination cap, and various lengths of appropriate piping. Many vendors sell them all together in a pre-packaged kit, with the cost of the 10' system averaging $600; and
- The Installation - cutting through the ceilings and exterior roofing requires special tools and skill, and most homeowners don't want to risk any errors. This is particularly true because chimneys vent toxic smoke and fumes and, if installed improperly, can lead to fire hazards. This is the reason that most installations are done by a carpenter, and the average job requires less than a full day of work. This adds roughly $375 to the cost of installation.
Additional considerations and costs
- Pitch - when a roof has a high or steep pitch (usually a 7:12 ratio or higher) the costs of materials in the engineered chimney might be a bit higher, and this is usually due to the fact that a special piece of flashing is necessary for the exterior mounting process. Such a component will usually cost the homeowner no more than $70.
- Repointing and Rebuilding - often a pre-existing chimney does not need to be fully replaced with a new engineered system and can benefit simply from a repointing or a rebuilding. This will never be a DIY project and requires the special skills of a mason. According to HomeInspectorLocator.com, the cost to rebuild the chimney above the exterior roof line is around $150 per linear foot. When it is simply a matter of repointing (repairing mortar and loose bricks) the cost is around $25 per row.