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Question DetailsAsked on 8/14/2013

Cost of chimney lining and repair of leaking roof near chimney.

Old house with new furnace in need of chimney lining.

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1 Answer


Depends on how your house is configured and how high. Sounds like you have a furnace ducting up through an old chimney. If that is the case, a new exhaust pipe can run from around $1000 if a straight shot to several thousands if requires assembly with kinks and bends.

If you are getting a new furnace, be sure to have bidders bid both running the existing route, and also direct outside venting, if the furnace you have chosen has that choice. A lot of newer high-efficiency furnaces can duct laterally a few feet to the outside and avoid a chimney entirely, which might save a lot of money, or even pay for the upgrade to a more efficient furnace.

If the roof leak is due to flashing failure around the old chimney, added cost should be zero to maybe $100.

Answered 7 years ago by LCD

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