Why is my drywall cracking?
Chloe Ramirez
Updated on March 05, 2026
Drywall cracks can be caused by minor seasonal changes in temperature and humidity, or they can be the result of structural problems. Foundation settlement or framing deterioration (due to rot or wood destroying insects) are severe structural problems that may first be identified by cracked drywall.
Is it normal for drywall to crack?
A: Wall cracks are fairly common in both new and older homes and are often the result of normal house “settling” that can quickly, inexpensively be remedied by re-taping the joints—the seams where the drywall panels meet.How do I stop my drywall from cracking?
Look for quick-setting “hot” mud or all-purpose drywall compound for the first coat. Then use a lightweight mud for the finishing coats. Using the right mud will create the strongest seams that resist cracking. Using the right tape is also important.How do you know if a wall crack is serious?
For example, a wall crack that goes across the ceiling and then down the wall. This is a sure sign of serious structural damage. Any horizontal wall crack that runs the length of a wall. If the wall is also bowed, it's even more serious.Why do drywall cracks keep coming back?
They develop due to a faulty drywall construction and often a natural sign of aging and settling. Cracks also often form when seasons shift due to changing temperatures and humidity levels.Why Cracks in Drywall Happen in Different Locations Explained
When should I be concerned about drywall cracks?
Recurring cracks or drywall cracks larger than 1/8″ wide are usually signs of significant structural concerns that should be addressed as soon as possible. As the structural components of a home continue to settle, deflect, or deteriorate, the cracks will tend to lengthen and widen.Why do cracks appear on internal walls?
In new builds and extensions, the foundations will settle under their own weight causing slight cracks in the walls. In older houses, temperature changes and variations in humidity levels will cause the structure to sink and swell over time. Newly plastered walls can often experience hairline cracks as they dry out.Do cracks mean foundation problems?
Fine, small cracks in the exterior walls or on the steps are usually nothing to worry about. Exterior cracks that are large and have a zig-zag pattern may be a sign that there's something wrong with the foundation. Brick cracks or bricks that are protruding from the wall should be checked.What causes interior wall cracks?
Why it happens: In a nutshell, it happens because things move. The ground beneath your foundation tends to shift slightly with changes in weather. These tiny movements aren't dangerous, but they can lead to small, non-damaging cracks in the weak spots in your walls—the places where doors and windows have been inserted.What do vertical cracks in the wall mean?
Vertical and horizontal cracks in drywall or plaster walls typically indicate drying and shrinkage, which is normal after construction. Jagged cracks, stair-step cracks and 45-degree angle cracks generally signify structural movement or settling issues that are occasionally serious but usually harmless.Can humidity cause drywall to crack?
The accumulation of moisture in the studs behind the drywall therefore can cause the drywall to crack. High levels of humidity in the home are therefore likely to cause drywall damage. In many cases, drywall cracks are the result of foundation damage. Wall cracks are often a sign of foundation movement.Can cold weather cause drywall to crack?
The problem is, drywall doesn't perform well in unheated cottages, and if it was installed incorrectly, it's even more likely to crack. “Every unheated drywalled cottage I've ever been in always cracks after winter,” says Jeff Graham, a contractor in Little Britain, Ont.What are the first signs of foundation problems?
5 Early Warning Signs of Foundation Failure
- Cracked, crumbling or compromised foundations. Start by checking the foundation itself. ...
- Shifting soil and water damage. Shifting soil is a common cause of foundation problems. ...
- Gaps in walls or the foundation. ...
- Drooping floors or warped ceilings. ...
- Doors or windows that don't fit.
Do houses ever stop settling?
A house will likely never stop completely settling. Most settling does occur within the first few years after the build, however, as the new house finds a place on the foundation and in the soil. You might notice a few inches over the years.How do I know if my house has structural problems?
Top 8 Signs of Structural Damage in Your Home
- Cracks or Bulging on Walls and Ceiling. ...
- Soil Pulling Away from House Walls. ...
- Cracks in Chimney. ...
- Uneven Gaps on Windows and Doors. ...
- Sagging, Sloping or Cracking of Floors. ...
- Sagging Roof and Roof Leaks. ...
- Damp Subfloor. ...
- Crumbling Concrete/Brick.