Does My Chimney Need Rebuilding, or Just Repair?
The signs a Northwest Indiana chimney is past repointing and needs a partial or full rebuild, and what each option costs.
NWI Chimney · October 4, 2026
The short answer
Most chimneys only need repair: repointing worn mortar joints, replacing a few spalled bricks, or rebuilding the crown. A rebuild is needed when the bricks themselves are failing over a large area, the chimney leans or has shifted, or bricks are loose enough to move by hand. Usually only the part above the roofline needs rebuilding — that runs $1,800–$4,500.
Signs repair is enough
- Mortar joints are recessed, sandy or cracked, but the bricks are solid
- A few bricks have chipped faces (spalling) in one area
- The crown on top is cracked but the stack below it is sound
Repointing runs $250–$550 per section, brick replacement $350–$900 per area, and a crown rebuild $600–$1,400.
Signs it needs rebuilding
- The chimney leans, or there's a gap between the chimney and the house
- Bricks are crumbling across large areas, not just a few faces
- Bricks are loose and can be wiggled by hand
- Brick pieces are falling onto the roof or into the yard
- Mortar is so far gone that repointing would mean redoing almost every joint
Why Region chimneys get there
The top of a chimney gets the worst of Northwest Indiana weather: wind-driven rain off Lake Michigan, snow sitting against the brick, and a long season of freezing and thawing. Once water gets into soft brick and old mortar, each freeze pushes it apart a little more. A leaking crown left for a few winters is the most common route to a rebuild.
What a rebuild costs
The rebuild assessment is free and photographed. A partial rebuild from the roofline up runs $1,800–$4,500; a full teardown and rebuild runs $4,500–$8,000+. A rebuild comes with a new crown, flashing and cap, so the new brick starts dry.
More answers
Can I rebuild only the top of the chimney?
Usually, yes. Most damage is above the roofline, where the chimney is most exposed. The part inside the house is often fine.
Is a leaning chimney dangerous?
It can be. A leaning stack can pull away from the house or drop bricks. Don't use the fireplace and have it looked at soon.
Should I remove the chimney instead?
If nothing vents through it any more, taking it down below the roofline is an option. Make sure no furnace or water heater still uses it.
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