Cracks in your home wall: An easy fix or a major issue?

Article Categories: ,

So, you’ve recently noticed a crack or two in your home’s walls and not sure if it should cause alarm. It’s pretty common for houses to show signs of wear and tear over time, including some cracking. But how does one tell at a glance whether a crack is just a minor blemish you can paint over or a red flag signalling deeper structural problems? 

Whether you’re a new homeowner or have lived in your home for a while, it’s worthwhile to know the types of wall cracks, what they could mean, and when it might be time to call in the experts.

Types of wall cracks

Yes, there are actually different types of wall cracks that vary in appearance and what they mean. This primarily depends on their cause and location and each signals different underlying issues.

Hairline cracks are often seen in newly built homes as the structure settles. These are thin cracks that usually do not pose a major threat and are probably more an eyesore than a structural concern. 

Vertical cracks, on the other hand, often appear due to minor settling and can sometimes indicate a shift in the foundation. These may require a closer look by a professional building inspector to ensure they do not widen over time.

Diagonal cracks often appear around doors and windows. These can suggest a shift in the foundation leading to uneven settling. While not immediately alarming, they should be monitored and, if they intensify, should be addressed by a professional. 

Horizontal cracks are more severe, often pointing to pressure from the soil outside which can compromise a wall’s structural integrity. Immediate evaluation in the form of a structural building inspection is essential to prevent further damage.

structural building inspection

Common causes of wall cracks

Wall cracks in homes can stem from various factors and it’s paramount to understand these to determine the appropriate course of action. 

  • One prevalent cause is the natural settling of a building over time, which generally leads to minor and often superficial cracks
  • Moisture is a key culprit, with fluctuating humidity levels causing the expansion and contraction of building materials. This can lead to stress in the walls, initiating cracks over time. In particular, excess moisture or poor drainage around the foundation of a home can intensify this issue, leading to more severe cracking patterns
  • If you live in an area with seismic activity or vibrations from heavy traffic nearby, these can inflict stress on the structural components of a house and may cause visible damage in the form of cracks
  • Poorly executed construction practices or the use of substandard materials can lead to premature cracking, compromising the integrity of the wall
  • Temperature changes can result in the expansion and contraction of building materials, leading to cracking

Assessing the severity of cracks in your home wall – When to call in a professional

Now that you know a little bit more about that crack in your wall, here are some physical assessments to help you determine its severity. 

  • Hairline cracks, although unsightly, are usually not indicative of severe structural issues, particularly when they remain under 1mm in width
  • Cracks wider than 5mm may suggest more significant structural problems. These should be thoroughly inspected to determine if they are stable or progressing. In many cases, a structural building inspection is advisable to evaluate the underlying causes accurately
  • Location is another essential factor. Cracks situated around doors and windows or spanning across walls horizontally are generally more concerning. They can suggest foundational shifts or external pressure, requiring more in-depth investigation
  • Monitoring the crack over time is a practical method for assessing severity. If the crack continues to widen or new cracks appear, it may warrant immediate expert attention. A professional building inspection can provide a detailed analysis of the situation and suggest an appropriate cause of action
  • In cases where multiple cracks appear simultaneously, or if those cracks follow a consistent pattern, it could indicate a systemic structural issue. This situation undeniably requires a professional evaluation to determine the appropriate corrective measures
  • Horizontal cracks or cracks that are accompanied by leaks, doors not closing properly, or visible shifts in the home’s structure should be addressed as a matter of urgency. These symptoms suggest significant underlying issues potentially affecting the building’s stability

Sure Building Inspections can offer a comprehensive analysis to understand the full scope of the problem. Get in touch today, contact 1300 787 327.

About the Author

white triangle brand element

A cut above the rest

Purchasing or building a property is a significant investment. At SURE Building Inspections, we are qualified professionals, who conduct detailed and thorough inspections, giving you the peace of mind you deserve. We guarantee that you will be glad you chose SURE Building Inspections to conduct your building inspection for your property.