Prices depend on the length, diameter, and condition of the liner, the type of liner being installed, and if the existing flue is an asbestos hazard. Removing and replacing a chimney liner costs $1,200 to $4,600 or $30 to $120 per linear foot, including materials and installation. This partial chimney removal takes 2 to 4 days, depending on the size of the chimney. Removing a chimney in the middle of the house is less expensive, as exterior walls do not need to be rebuilt. Steel beams cost $100 to $400 per foot to install structural support. A chimney breast encases the fireplace from ceiling to floor, and can be removed without demolishing the chimney stack.Īny portion in the upper part of the chimney that's remaining after removing the breast needs support from gallows brackets or steel beams. The average cost to remove a chimney breast is $1,500 to $2,500, which includes hiring a structural engineer, demolition, structural support, and patching walls, ceilings, and floors. Older chimneys, or chimneys located near the eaves rather than at the roof apex take less time to demolish. Preserving the exterior architecture of the house is important.ĭemolishing a chimney stack plus repairs and cleanup takes half a day to 3 days, depending on the size. One option is installing a chase cover or top pan flush with the roof. In some cases, it is necessary to leave the chimney stack intact when removing the breast if:Ĭhimney stack is shared in a duplex or row house.Īppliances are using the chimney chase for ventilation, such as a furnace or water heater. For chimneys running along the exterior of a home, like a “bolt on,” the entire chimney must be demolished above and below the roof-line.
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