The short answer
Common Causes of Wall Cracks
Water damage is a frequent cause. A slow leak from a pipe, roof, or window can soak the drywall, making it swell and crack. You might see a brown stain or feel a soft spot near the crack. Even a small leak can cause big problems if it goes unnoticed.
Foundation shifts also create cracks. Soil movement, heavy rain, or poor drainage can move the foundation, putting stress on the wall. Temperature changes cause materials to expand and contract, which can create hairline cracks over time. These are often cosmetic, but they can signal deeper issues.
- Check for water stains or discoloration near the crack.
- Feel the wall around the crack for softness or dampness.
- Look for gaps around windows or doors nearby.
- Tap the wall; a hollow sound may indicate moisture.
- Monitor the crack size over a few weeks.
- Note if the crack follows a straight line or a stair-step pattern.
How to Tell If It's a Water Issue
Water damage often leaves clues. Look for a yellowish or brown tint, peeling paint, or bubbling wallpaper. The crack may be wider at one end, or the drywall might feel spongy. If the crack appears shortly after a heavy rain or after you've used a lot of water, a leak is more likely.
You can also check the area above the crack. If there's a bathroom or a roof above, a leak from a pipe or flashing could be the culprit. Run your hand along the wall to feel for moisture. If you find dampness, you have a water problem that needs attention soon.
When to Call in the Pros
If you suspect water damage, don't wait. The longer water sits, the more it damages the wall structure and can lead to mold. Local water damage pros can use moisture mapping and leak detection to find the source without tearing up your wall. They can also assess the extent of the damage.
For minor hairline cracks from settling, you might handle it yourself with patching and paint. But if the crack is large, jagged, or accompanied by a bulge, that's a sign of a serious structural issue. In that case, you need a professional assessment to prevent further damage.
If you live in Layton, keep the location of your main shutoff valve written down. That way, you can stop a leak fast. But for any significant crack, a pro's help is worth it.
- Large cracks wider than a quarter-inch.
- Cracks that keep growing over time.
- Visible water stains or mold near the crack.
- A wall that feels soft or gives when pressed.
- Cracks that appear suddenly after a storm or plumbing issue.
What the Repair Process Involves
The repair depends on the cause. For water damage, the source must be fixed first, then the wet drywall is removed and replaced. The pros often use structural drying to remove hidden moisture from the wall cavity, which prevents future issues. Then they patch, tape, and texture the new drywall.
For foundation cracks, the repair is different. It might involve stabilizing the foundation or repairing the exterior drainage. Inside, the crack is filled with a flexible compound and repainted. The key is to address the root cause, not just cover the crack, or it will come back.
Preventing Future Cracks
You can reduce the risk of cracks by controlling moisture. Fix leaky roofs, gutters, and plumbing promptly. Make sure the ground around your home slopes away from the foundation to keep water out. Inside, use a dehumidifier in damp rooms to lower humidity.
Keep an eye on your walls for early signs of trouble. Small cracks can be patched early, but ignoring them can lead to bigger issues. If you notice a new crack, investigate the cause before it worsens. Regular checks of your home's exterior and plumbing can save you from costly repairs later.
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Call Now (801) 383-0232Frequently asked questions
Can I fix a cracked wall myself?
Small hairline cracks from settling can be patched with joint compound and paint. But if the crack is large, wet, or growing, call a local water damage pro to assess it. Fixing the symptom without addressing the cause will only delay the problem.
Will my insurance cover wall crack repairs?
Policies vary, and your insurer decides what is covered. Water damage from a sudden pipe burst is often covered, but gradual leaks or foundation settling may not be. Check your policy and document the damage with photos before any repair work.
How long does a wall crack repair take?
It depends on the cause and extent. A simple patch can take a few hours, but a water-damaged wall may need several days for drying and replacement. The pros will give you a realistic timeline after inspecting the damage. Act quickly to prevent further issues.