Can a Storm Cause My Chimney to Leak?

A chimney has several key parts that are vulnerable to storm damage. The chimney crown, which is the concrete or mortar slab on top, can crack from hail impact or the stress of high winds. The mortar between the bricks, known as the joints, can be eroded by driving rain. Most commonly, the thin metal flashing that creates a watertight seal between the chimney and the roof shingles can be bent, torn, or completely dislodged by strong gusts, creating an immediate path for water.

Your first priority is to limit interior water damage. Immediately place buckets or thick towels to catch dripping water and move any furniture, rugs, or electronics away from the wet area. If you can safely access your roof, you can temporarily cover the chimney top with a waterproof tarp secured with ropes or weights to prevent more rain from entering. Then, take clear photos of all the damage, including water stains, pooled water, and the chimney exterior, for your records. This documentation is important before you contact professionals for repair.

• Move valuables and furniture away from the wet area.
• Use buckets and towels to collect dripping water.
• Take clear photos of all damage for documentation.
• If safe, place a waterproof tarp over the chimney top.
• Contact a qualified mason or roofer for an inspection.
• Keep the area ventilated to help surfaces begin drying.

Water entering through the chimney can quickly soak insulation, drywall, and structural wood in your attic and walls. This trapped moisture creates an ideal environment for mold growth, which can begin within a day or two. To prevent secondary damage, the wet building materials need to be professionally dried. Local water damage pros use industrial-grade air movers and dehumidifiers to dry the structure thoroughly, often needing to check moisture levels inside walls. They can also assess and safely remove any compromised drywall or insulation that cannot be salvaged.