The short answer
Wind Lifts and Tears Roofing
Strong thunderstorm winds can get under the edges of shingles or tiles and peel them back or rip them off entirely. This leaves the underlayment exposed and vulnerable to the next rain. Wind can also loosen flashing around chimneys, vents, and skylights, creating openings where water can enter.
Debris carried by the wind, like tree branches or loose objects, can strike the roof and cause dents, cracks, or punctures. Even a small hole can allow a significant amount of water to enter during a downpour. The damage might be visible from the ground, or it could be hidden under a displaced shingle.
- Shingles or tiles lifted or missing
- Flashing pulled loose at roof edges and penetrations
- Dents or cracks from wind-blown debris
- Branches or limbs resting on the roof
- Gutters and downspouts bent or detached
Hail Impacts and Punctures
Hailstones can range from pea-sized to several inches across. Large hail can strike the roof with enough force to crack asphalt shingles, dent metal roofing, or even puncture through to the decking below. The impact can also loosen granules on shingles, reducing their protection against the sun and weather.
After a hailstorm, a roof may look worn or have small dark spots where the protective layer was knocked off. These weakened areas are more likely to fail during the next storm. Even if no obvious hole exists, the damage can shorten the life of the roofing material significantly.
Heavy Rain Finds Weak Points
Torrential rain during a thunderstorm can overwhelm the roof's drainage system. If gutters are clogged or downspouts are too small, water can back up under the roof edge and seep into the eaves. This often leads to rot in the fascia, soffit, and the roof decking itself.
Rain driven by high winds can also force water upward under shingles, especially at the edges and ridges. Older roofs or those with existing minor wear are more susceptible. The result can be water stains on ceilings or walls, damp insulation, and the start of mold growth in the attic.
Steps to Take After the Storm
If a severe thunderstorm has passed over your home, check the roof from the ground for obvious signs like missing shingles or fallen branches. Look inside the house for any new water stains on ceilings or walls, and check the attic for dampness or daylight showing through the roof.
If you find damage, document it with photos and notes. Then contact local water damage pros for an assessment. They can help determine the source of the leak and the extent of the damage. Acting quickly can help prevent further issues like mold growth.
Documenting the damage is also important for your insurance claim. Policies vary, and your insurer decides what is covered. Keep records of any temporary repairs you make, like placing a tarp over a hole, to show the steps you took to protect your home.
- Inspect from the ground for visible damage
- Look for water stains or drips inside
- Check the attic for dampness or light
- Document any damage with photos
- Contact local water damage pros for an assessment
Talk to someone now
Call (480) 898-4279 any time, day or night, and describe what happened.
Call Now (480) 898-4279Frequently asked questions
Should I get on my roof to check for damage?
It is safer to check from the ground first. Use binoculars to look for missing or lifted shingles, dents, and debris. Only go on the roof if it is safe and you are comfortable. Otherwise, wait for the pros to do a thorough inspection.
What should I do if I see a leak inside?
Place a bucket under the leak to catch water and remove any valuables from the area. If possible, try to stop the water from spreading by moving furniture or rugs. Then call the pros to assess the situation and help with cleanup.
Can a thunderstorm cause damage without hail?
Yes, high winds alone can lift shingles and loosen flashing, and heavy rain can find its way into small gaps. Wind-driven rain is particularly effective at getting under roofing materials. Even without hail, a severe thunderstorm can cause significant water damage.