Common chimney problems
- Missing or damaged chimney cap. Without a cap, rain, leaves and animals can get into the flue.
- Cracked crown. The concrete or mortar slab on top of a masonry chimney sheds water. Once cracked, water seeps into the brick.
- Leaking flashing. The metal seal where the chimney meets the roof is a frequent source of ceiling stains near the chimney.
- Worn mortar joints or spalling brick. Crumbling joints or brick faces flaking off are signs of water damage. Repointing (tuckpointing) replaces deteriorated mortar.
- Damaged flue liner. Cracked clay tiles or a deteriorated liner can let heat and gases reach the structure. Relining is a bigger job, usually found during a Level 2 inspection.
- Damper problems. A stuck, rusted or broken damper lets conditioned air escape or won't open fully for a fire.
- Rusted chase cover. On framed chimneys with siding, the metal top can rust and let water inside the chase.
Warning signs
- Water stains on the ceiling or wall near the fireplace, or water in the firebox.
- White, chalky staining (efflorescence) on the outside brick.
- Pieces of tile, brick or mortar falling into the fireplace.
- A chimney that looks like it's leaning or separating from the house.
If you've had a chimney fire, or see a lean or large cracks, don't use the fireplace until it's been inspected.
Getting a fair repair quote
Repair costs vary widely with the problem, the height and pitch of the roof, and the materials. Ask for photos of the damage and a written, itemized quote. For a large job like a rebuild or relining, getting a second quote is normal and reasonable.
Related: chimney inspection, cost & FAQ.
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