What Are the Signs of a Lightning Strike on a Roof?

A direct lightning strike often leaves clear physical marks. You might see dark scorch marks or charred areas on shingles, tiles, or metal panels. Sometimes the strike creates a small crater or pitting in asphalt shingles, or it can melt the surface of metal flashing. Look for shingles that are cracked, blistered, or lifted out of place, as the electrical surge can weaken their bond.

Check the ridge caps and valleys, where lightning tends to hit the highest points. You might notice displaced or missing shingles that were blown off by the shockwave. Also inspect any roof penetrations like vents, chimneys, or skylights. The strike can crack the flashing around these areas, leaving gaps that allow water to enter. If you see any of these signs, take photos and note the exact locations.

A lightning strike can send a surge through your home's wiring, even if the roof shows little damage. You might notice tripped breakers, blown fuses, or non-working outlets after the storm. Some appliances or electronics may stop functioning, or your smoke detectors might beep with a low battery. These signs indicate that the electrical system was affected, and the surge could have traveled through the roof structure.

Check your attic for any exposed wiring that shows burn marks or melted insulation. If you suspect electrical damage, turn off the main power to those circuits and consult an electrician. Do not attempt to fix wiring yourself. Also, inspect your HVAC system and any rooftop equipment like solar panels or antennas, as they can be damaged by a strike. Document any issues for your insurance claim.

• Tripped circuit breakers or blown fuses
• Dead outlets or lights that flicker
• Burnt smell near electrical panels
• Melted wire insulation in attic
• Damaged surge protectors
• Non-responsive appliances or electronics

After a storm, inspect your roof from the ground with binoculars first, then carefully check the attic. Do not climb onto the roof if it looks damaged or wet. Take photos of any signs you find, both inside and outside. If you notice water stains, contact a roofing professional for a thorough inspection. They can identify hidden damage that you might miss.

If you have water intrusion, you may need emergency roof tarping to prevent further damage until repairs are made. Also, check your insurance policy to understand what is covered. Policies vary, and your insurer decides what is covered. Keep records of all damage and any temporary repairs you make. For water damage inside your home, you may need professional cleanup to dry affected areas and prevent mold growth.