The short answer
Why a Leaning Chimney Is a Safety Risk
A chimney that leans after a storm is not just a cosmetic issue. The lean means the structure has shifted, which can happen when high winds loosen the mortar between bricks or when the footing underneath settles unevenly. That shift puts stress on the entire stack, and the next gust or even the weight of the chimney itself could cause it to topple.
A falling chimney can damage your roof, your home's structure, or anything below it. If the chimney is attached to an exterior wall, the lean can also pull on the wall framing, creating cracks and letting water in. The safest move is to treat the chimney as unstable until a professional assesses it.
- Keep children and pets away from the area below the chimney
- Do not use the fireplace or wood stove until the chimney is checked
- Look for cracks in the mortar or bricks near the lean
- Check for gaps where the chimney meets the roof flashing
- If you see exposed wires or gas lines, call your utility company
- Take photos of the damage for your insurance records
What the Storm Likely Did to the Chimney
Storms bring heavy rain and strong winds that can affect a chimney in several ways. Rain can soak into old mortar, softening it, and then the wind pushes against the tall, exposed structure. If the flashing around the base is damaged, water can also seep into the roof deck and weaken the framing that supports the chimney.
Even if the lean looks small, the underlying damage can be serious. A chimney that was already aging may have had hairline cracks before the storm, and the storm simply widened them. The pro will need to check the entire chimney, from the crown down to the footing, to understand the full extent of the problem. Policies vary, and your insurer decides what is covered.
How to Protect Your Home Right After the Storm
Your first job is to keep the situation from getting worse. If the chimney is leaning, do not try to straighten it yourself. Instead, clear the area below and around it. If you can see a gap where the chimney meets the roof, you can place a tarp over the top of the chimney to keep rain out, but only if it is safe to reach.
When to Call a Professional Inspector
You should call a professional as soon as the storm passes and it is safe to be outside. A local water damage pro can assess the chimney and the surrounding roof and walls for hidden damage. They can also check for water that may have already entered your home through the gaps the lean created.
The pro will likely recommend one of two paths: repair the chimney if the structure is still sound, or remove and rebuild it if the footing or mortar is too damaged. You may also need a separate inspection by a roofing professional if the flashing is torn or the roof deck is wet.
What the Repair Process Usually Involves
If the chimney can be saved, the repair work typically includes repointing the mortar joints, replacing cracked bricks, and rebuilding the crown. The pro will also re-seal the flashing where the chimney meets the roof to stop water from entering. If the footing has settled, they may need to support the chimney with temporary bracing while they address the foundation.
If the chimney is beyond repair, the pro will carefully dismantle it from the top down, removing the bricks and disposing of them. The roof opening is then patched and re-flashed. After the work, you should have the chimney inspected again before using your fireplace, to make sure the new structure meets current safety standards.
- Repointing old mortar with fresh material
- Replacing cracked or spalled bricks
- Rebuilding the chimney crown to shed water
- Re-sealing the flashing at the roofline
- Adding a new rain cap to keep water out
- Checking the footing and adding support if needed
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Call Now (425) 407-5186Frequently asked questions
Can I still use my fireplace if the chimney is leaning?
No, do not use the fireplace or wood stove until a professional inspects the chimney. A lean means the structure is compromised, and the heat and smoke from a fire could worsen the damage or cause the chimney to collapse. Wait for the inspection.
How long does a chimney repair take after a storm?
The time depends on the extent of the damage and the weather. A simple repointing might take a day or two, while a full rebuild can take several days. The pro will give you a timeline after the inspection, but you should plan for the chimney to be out of service for at least a few days.
Will water damage from a leaning chimney spread inside my home?
Yes, if the lean has opened a gap in the flashing, rainwater can run down the chimney and into your attic or walls. That water can soak insulation, stain drywall, and lead to mold growth. Have the pro check for moisture in the surrounding areas during the inspection.