What Is the Process of Repairing a Damaged Chimney After a Storm?
Last updated October 25, 2026
The short answer
Assess the Damage First
Begin by examining your chimney from the ground. Look for fallen bricks, cracks in the mortar, or a leaning stack. Also check the roofline for displaced flashing or gaps where water could enter. If you spot a large crack or missing sections, keep everyone away from the area.
A storm can weaken the chimney even when the damage is not obvious. Water may have soaked into the brick and mortar, making them crumble later. For a full picture, a professional should inspect the flue interior and the crown. They can spot issues you might miss from below.
- Check for loose or missing bricks
- Look for horizontal cracks in the mortar
- Inspect the chimney crown for chips
- See if the flashing is pulled away
- Watch for water stains on interior walls
Protect Your Home Right Away
Until repairs happen, you need to keep water out. Cover the top of the chimney with a heavy tarp or temporary cap. Secure it with straps so it will not blow off in the next gust. Also seal any visible gaps with waterproof tape or caulk, but only if you can do so safely.
Inside, place buckets or towels under any leaks. Move valuables away from the affected walls and ceiling. If water has already soaked into drywall or flooring, start drying the area with fans. Acting quickly reduces the chance of mold growth and further structural damage.
Remove Damaged Sections
Repairing a chimney often means taking out the broken parts. A pro will remove loose bricks and chipped mortar down to solid material. They may also take off the crown if it is cracked. This step is messy and can be dangerous, so it is sensible to leave it to someone with the right tools.
If the chimney has shifted or leans, the entire top portion might need to come down. In severe cases, a full rebuild is necessary. The pro will decide based on how deep the damage goes. You should ask for a clear explanation of what they find and what they plan to do.
Rebuild and Reinforce
Once the damaged parts are gone, the rebuild begins. New bricks are laid with fresh mortar that matches the existing structure. The crown is replaced with a concrete cap that slopes away from the flue. Flashing is re-sealed to the roof to stop water from sneaking behind the chimney.
Sometimes a pro will add reinforcement, like metal ties or a stainless steel liner, to make the chimney more storm-resistant. They might also recommend a chimney cap to keep out rain and debris. These additions help extend the life of the repair, though costs vary widely.
Final Inspection and Maintenance
After the repair, a final check is important. The pro should test the flue for blockages and verify that smoke vents properly. They will also look at the roofline for any remaining gaps. If you notice new cracks or shifting within a few months, call them back to re-evaluate.
Regular maintenance can prevent future storm damage. Have the chimney inspected each year, especially before winter. In a climate with cold, snowy winters and warm, humid summers, freeze-thaw cycles can weaken mortar. Keeping the crown and flashing in good shape makes a big difference.
Talk to someone now
Call (313) 766-2970 any time, day or night, and describe what happened.
Call Now (313) 766-2970Frequently asked questions
Can I repair a chimney crack myself?
Small cosmetic cracks in the mortar might be filled with masonry caulk, but structural cracks need a professional. If the chimney leans or bricks are loose, do not attempt a DIY fix. A pro can assess whether the flue is safe and prevent a collapse or fire hazard.
How long does a chimney repair take?
The time depends on the extent of the damage. A simple crown replacement might take a day, while a full rebuild could take several days. Weather also plays a role, since mortar needs dry conditions to set. Ask the pro for a timeline before work starts.
Will my insurance cover chimney storm damage?
Policies vary, and your insurer decides what is covered. Storm damage is often included in homeowners policies, but not always. Check your policy for specifics on wind and water damage. If in doubt, contact your insurance company to ask about your coverage before starting repairs.
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