The short answer
What Causes Storm Wall Cracks
Storm-driven rain can push water through small gaps in your roof, siding, or windows. That moisture soaks into drywall and wooden framing. As the wood swells and then dries, it shrinks, and the movement shows up as cracks along seams, corners, or around door frames.
Heavy rain also saturates the soil around your foundation. When the ground expands and contracts, it can shift the foundation slightly. That movement transfers stress to your walls, creating new cracks or widening old ones. If you notice cracks after a storm, water is often the main culprit.
How to Spot Water Damage
Look for clues beyond the crack itself. Discoloration, bubbling paint, or a musty smell near the crack suggests moisture is still present. Press gently on the wall; if it feels soft or spongy, the drywall may be water-damaged.
Check the area above the crack, like the roofline or window sill, for signs of water entry. Even a small leak can cause significant damage over time. If you find dampness, the pros can help with a water damage inspection to find the source and assess the extent.
- Look for brown or yellow stains on the wall
- Feel for soft or damp spots around the crack
- Check for peeling paint or bubbling wallpaper
- Inspect the roof and gutters for damage
- Notice any musty or earthy odors
- See if cracks appear along ceiling seams
When to Call the Pros
If the cracks are small and dry, you might handle them with patching and paint after the storm passes. But if you see water stains, the crack is getting wider, or the wall feels soft, it's time to get professional help. Water trapped inside walls can lead to mold and structural issues.
Local water damage pros can dry out the affected area and determine if the drywall needs replacement. They can also check for hidden moisture behind the wall. Acting quickly prevents the damage from spreading and keeps your home safer.
Why Quick Action Matters
Moisture left inside a wall can weaken the drywall and framing over time. It also creates an environment where mold can grow, which may affect indoor air quality. The longer water sits, the more extensive the repair work often becomes.
You can start by drying the area with fans and removing any wet furniture or rugs. But for thorough drying and repair, the pros have the right equipment. They can also help with storm water damage cleanup if the storm caused flooding or significant water entry.
Preventing Future Cracks
After a storm, check your roof for missing shingles and inspect window seals for gaps. Keep gutters clear so water flows away from your foundation. Proper drainage helps reduce soil shifts that can stress your walls.
Inside, fix any leaks quickly and keep humidity levels steady. After a storm, take a quick walk around your home to spot any new cracks or water stains. Catching small issues early can prevent bigger cracks later.
- Clean gutters and downspouts regularly
- Seal gaps around windows and doors
- Ensure the ground slopes away from your foundation
- Fix roof leaks as soon as you spot them
- Use a dehumidifier in damp areas of your home
- Inspect walls after every major storm
Water damage does not wait
Call (480) 898-4279 any time, day or night, and describe what happened.
Call Now (480) 898-4279Frequently asked questions
Are storm cracks always a sign of water damage?
Not always, but water is a common cause. Cracks can also come from foundation settling. Look for stains or dampness to tell the difference. If the crack is dry and stable, it may be cosmetic. If you see water signs, get an inspection.
Can I just paint over the cracks?
You can paint over hairline cracks if they're dry and not growing. But if water damage is present, paint won't fix the problem. The moisture needs to be dried first, and damaged drywall may need replacement. Otherwise, the crack will likely return.
How do I know if the crack is dangerous?
A crack wider than a quarter inch, one that grows over time, or one that comes with a bulging wall could indicate structural issues. If you're unsure, have a professional inspect it. Cracks from water damage are usually not dangerous, but they can lead to bigger problems.