A cracked chimney can be repaired with fresh mortar joints if the bricks are still in good condition. Re-mortaring : Mortar is the material that holds bricks together and seals the gaps between them.Foundation repair is expensive at $1,500–$3,000 but is necessary to support the chimney’s weight.ĭepending on the type and extent of the damage, chimney technicians can use several methods to repair a damaged chimney. If it cracks or breaks, this may result in a leaning chimney. Foundation: The foundation of a chimney is typically a poured concrete pad underneath the firebox.Small cracks can be patched for around $500, but more substantial damage can cost up to $2,000 to fix.
Smoke chamber : The chimney’s smoke chamber acts like a funnel, directing smoke and soot up into the flue so it doesn’t blow back into your home. Including labor, cracked flue tiles can cost as little as $200 to replace, but fully relining the chimney can cost up to $5,000. The clay tiles that line a flue typically cost $65–$100 per square foot. Chimney flue repair costs vary widely depending on how much of it needs fixing. The lining of the flue is what protects your home from the heat of a fire. Flue liner : The chimney’s flue is the interior tunnel that leads to the opening at the top. If it’s made of aluminum or other materials, it will usually cost $500–$600 to replace. If the siding is made of wood, it will cost the same as wood rot repair. Siding: The material around the external portion of the chimney that rises from the roof is the siding. If the waterproofing around this wood fails, it can rot and require replacement. Wood: Not all chimneys have a wood structure where the chimney meets the roof, but some do. 
It’s needed at the base of a chimney where it exits a roof, and chimney flashing repair costs $200–$300. Flashing: Flashing is the metal lining that waterproofs your roof’s joints and other features.If your roof has one of these, it will cost anywhere from $700–$1,300 to repair.
Chimney cricket: A chimney cricket, also called a saddle, helps prevent water leaks between the roof and chimney by diverting the water flow away from the chimney. A small problem with the stack can be repaired for around $500, but rebuilding and re-mortaring it can cost up to $3,500. Stacks sustain lots of weather-related wear and tear, so an older stack may have severe structural damage. Chimney stack : The chimney portion that’s visible above the roofline is called the stack. Chimney crown replacement will cost even more. Since it’s often made of poured concrete, chimney crown repair costs $750–$1,000. It also plays a vital role in forming a barrier between your home and the outdoors. Chimney crown : The chimney crown sits just below the cap and covers the chimney opening, save for the hole under the cap. Repair to chimney caps typically costs $100–$250. Even in a brick chimney, this part is usually made of metal. It also prevents fireplace embers from flying out. Chimney cap : The cap sits atop the chimney opening and prevents water, debris, and even small animals from getting into your home. Here are various parts or components and approximately how much it costs to repair them. Working chimneys have many functional parts, and some of these parts cost more than others.
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