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Identifying and Repairing Common Drywall Cracks: Causes & Solutions

Raleigh Drywall Contractor • July 18, 2020

Understand drywall crack types for effective home repairs.

Understanding the nature of drywall cracks is essential for homeowners. Cracks in drywall can indicate underlying structural issues that may require immediate attention. By recognizing the types and causes of these cracks, homeowners can take proactive steps to repair and maintain their walls. If you're unsure about the severity of the cracks in your drywall, consider referring to a professional for a thorough assessment and expert advice. This guide will explore common drywall cracks, their causes, identification techniques, and effective solutions for repair.

2. Types of Drywall Cracks


Hairline Cracks


  • Description: Hairline cracks are very thin and often occur in newly built homes. They are typically less than 1/16 inch wide and may appear as faint lines on the surface of the drywall.


  • Causes: These cracks can result from normal settling of the house or minor temperature changes, such as transitioning from heating to cooling during seasonal changes.


  • Identification: Hairline cracks are generally not structurally concerning and can often be overlooked. However, if they start to widen, it may indicate a need for further inspection.


  • Repair Solutions: Repairing hairline cracks is straightforward. Homeowners can fill these cracks with joint compound or caulk. After applying the filler, it's essential to smooth the surface with a putty knife and allow it to dry completely before sanding and repainting for a seamless finish.


Settlement Cracks


  • Description: Settlement cracks are more significant than hairline cracks and often develop as the house settles over time. These cracks can vary in width and may extend vertically or horizontally.


  • Causes: Ground movement, soil expansion or contraction, and poor foundation can lead to settlement cracks. Over time, as the house adjusts to its environment, these cracks can develop, especially in homes built on unstable or improperly compacted soil.


  • Identification: Settlement cracks are typically wider at the top than at the bottom and may indicate more severe underlying issues. Homeowners should pay attention to the location of these cracks, particularly near windows and doors, as they may cause sticking or misalignment.


  • Repair Solutions: To address settlement cracks, a thorough inspection of the foundation is crucial. If significant foundation issues are found, it may require structural evaluation and repair before filling the cracks with joint compound. Monitoring these cracks for reappearance is also vital, as persistent cracks may indicate ongoing movement.


Stress Cracks


  • Description: Stress cracks are a result of tension in the drywall caused by various factors, including building movement or improper installation.


  • Causes: Factors such as structural shifts, improper framing, or inadequate installation techniques can lead to stress cracks. These cracks often occur in diagonal or zigzag patterns and may be concentrated around joints where two drywall pieces meet.


  • Identification: Stress cracks are identifiable by their specific patterns and locations. Homeowners should look for cracks near doors and windows, as well as along ceilings and walls.


  • Repair Solutions: Repairing stress cracks involves cutting a slight V-shape along the crack to improve adhesion for the repair materials. Afterward, applying tape designed for drywall repairs, followed by joint compound, will help secure and conceal the crack. Once dry, sand the area and repaint for a finished look. In cases where the movement is severe, more extensive structural repairs may be necessary.


Corner Bead Cracks


  • Description: Corner bead cracks occur at the corners of walls where two drywall pieces meet. These cracks can manifest as chips or fractures in the corner bead, which is the metal or plastic trim used to protect the edges of drywall.


  • Causes: Factors contributing to corner bead cracks include impacts from furniture, settling, or improper installation during the drywall hanging process.


  • Identification: Homeowners can easily spot corner bead cracks as they appear along the edges of walls, particularly where they meet at right angles. These cracks can sometimes be accompanied by paint peeling or chipping.


  • Repair Solutions: To repair corner bead cracks, homeowners may need to remove the damaged corner bead before installing a new one. After securing the new corner bead, apply joint compound over the seam and finish as needed to achieve a smooth appearance.


3. Common Causes of Drywall Cracks

In order to effectively address drywall cracks, it is important to understand the common causes that lead to these issues. Following are some causes of cracks

Foundation Issues

Foundation movement is one of the primary causes of cracks in drywall. As the ground shifts or settles, it can create stress on the walls, leading to visible cracks. Regular checks and maintenance of the foundation are crucial for preventing significant damage. Homeowners should be vigilant for signs of foundation problems, such as uneven floors or gaps around windows and doors.


Temperature Changes

Drywall can expand and contract with temperature fluctuations. These movements can create tension within the drywall, leading to cracks over time. Homeowners should be aware of how significant temperature changes during different seasons can affect their walls, particularly in regions with extreme weather conditions.


Humidity Levels

Moisture plays a critical role in drywall integrity. High humidity can weaken drywall and lead to cracks. Conversely, low humidity can cause the material to dry out and shrink, also resulting in cracks. Homeowners should monitor humidity levels in their homes and use dehumidifiers or humidifiers as needed to maintain a balanced environment.


Accidental Damage

Accidental impacts from furniture or other objects can cause immediate damage to drywall. Understanding how to effectively fix hole in wall repair can help prevent further issues, such as cracks forming around the impacted area. Homeowners should be cautious when moving furniture or other items to avoid causing damage to their walls.


4. Identifying Drywall Cracks

Visual inspection is the first step in identifying the type and severity of drywall cracks. Homeowners should look for the following indicators:


  • Type of Crack: Determine if the crack is hairline, settlement, stress, or corner bead.


  • Location: Take note of where the crack is located; cracks near corners, ceilings, or windows may indicate more significant issues.


  • Width and Depth: Measure the width and depth of the crack to assess severity. Hairline cracks can often be repaired with minimal effort, while wider cracks may require more extensive repair work.


When uncertain about the cause or severity of the crack, it may be wise to consult with general contractors Raleigh, NC for a professional evaluation. Seeking expert advice can provide homeowners with peace of mind and ensure that any underlying issues are addressed promptly.


5. Repair Solutions


Repairing Hairline Cracks

  1. Clean the Crack: Use a utility knife or a putty knife to remove any loose debris from the crack and surrounding area.
  2. Fill the Crack: Apply joint compound or caulk to fill the crack. For a cleaner finish, a putty knife can be used to smooth the compound as it is applied.
  3. Dry and Sand: Allow the filler to dry completely. Once dry, sand the area lightly to create a smooth surface.
  4. Repaint: If necessary, repaint the area to match the surrounding wall.


Repairing Settlement Cracks

  1. Inspect the Foundation: Conduct a thorough inspection of the foundation for any signs of significant movement or damage. Consulting with professionals at this stage may be beneficial.
  2. Fill the Crack: If the foundation is stable, fill the crack with joint compound using a putty knife.
  3. Monitor: Keep an eye on the crack for any reappearance or further widening. If cracks persist, additional foundation work may be needed.


Repairing Stress Cracks

  1. Cut the Crack: Use a utility knife to cut a V-shape along the length of the crack, ensuring better adhesion of the repair materials.
  2. Apply Tape: Place a strip of tape designed for drywall repairs over the crack.
  3. Cover with Joint Compound: Spread joint compound over the tape and feather the edges to blend with the surrounding wall.
  4. Finish: Allow the compound to dry, then sand it down and repaint the area.


Repairing Corner Bead Cracks

  1. Remove Damaged Corner Bead: If the corner bead is cracked, carefully remove the damaged section.
  2. Install New Corner Bead: Attach a new corner bead securely to the corners of the drywall.
  3. Apply Joint Compound: Cover the corner bead with joint compound and smooth it out.
  4. Finish: Allow the compound to dry, sand it for a smooth finish, and repaint as needed.


6. Preventative Measures

To prevent future cracks, homeowners should consider the following:


  • Proper Installation Techniques: Ensuring drywall is installed correctly can minimize the risk of cracks. Hiring experienced professionals for installation can help avoid common pitfalls.


  • Monitoring Humidity Levels: Use dehumidifiers in damp areas and ensure proper ventilation to control moisture in the home. This can significantly reduce the chances of humidity-related issues in drywall.


  • Regular Inspections: Conducting regular inspections for signs of settlement or stress can help catch problems early. Homeowners should keep an eye out for new cracks or changes in existing cracks and take immediate action if necessary.


7. Conclusion

Understanding and addressing drywall cracks is crucial for maintaining the integrity of your home. By being proactive in identifying and repairing cracks, homeowners can prevent further damage and preserve their living spaces. Remember, for any significant issues or uncertainties, consulting contractors near me can provide the expertise needed for effective repair.

Taking the time to learn about drywall cracks can save homeowners from costly repairs in the future and ensure that their homes remain safe and structurally sound.


8. FAQs

What should I do if I see cracks in my drywall?
Inspect the cracks and determine their type. If they appear to be settling or stress cracks, consider consulting with professionals.


Can I repair drywall cracks myself?
Many small cracks can be repaired with DIY methods. However, for larger or more severe cracks, it may be best to hire a drywall company near me.


How can I find reliable drywall repair services?
Search online for drywall repair near me or ask for recommendations from friends or family.


Is drywall repair expensive?
The cost varies based on the severity of the damage and whether you choose to hire a professional. Generally, small repairs are affordable, while major issues may require more investment.


What tools do I need for drywall repair?
Basic tools include a putty knife, joint compound, sandpaper, and primer/paint for finishing touches.

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