Cracking in Brick Homes

Cracks have many possible causes and the inspector uses his experience to attempt to identify what has caused them. This process includes examining the characteristics of the crack or cracks and other evidence that may be apparent in other areas of the building. Whilst the causes of many types of crack is obvious, there are also many situations where the cause cannot be identified within the constraints of a pre purchase inspection. When this occurs the inspector will typically recommend a further and more detailed investigation by an appropriate specialist such as a Structural Engineer. Here are some examples of the types of cracking that occur: Cracks in the surface of concrete slabs caused by rapid drying of the concrete. Cracks in finishing layers caused by exposure to the weather. Cracks in wall and ceiling sheeting caused by the timber frame shrinking as it dries out in the first few years following construction. Cracks in masonry walls cause by movement of the foundations. Such movement has many causes and requires detailed investigation by a structural engineer. Cracks in masonry caused by insufficient or inadequate control joints to allow for thermal expansion and contraction. If you have cracks detailed in your report Don’t Panic, they may be relatively minor. Even when the cracks are associated with more serious structural issues most can be rectified.

Types of Cracks and Their Causes:

• Horizontal Cracks:
  These cracks can indicate excessive pressure or structural movement and may be a sign of serious issues. 

• Stair-Step Cracks:
  Diagonal cracks following the mortar joints are often a sign of foundation problems or poor construction. 

• Hairline Cracks:
  These are often cosmetic and caused by minor temperature or moisture changes. However, they can worsen over time if not addressed. 

• Wide or Gaping Cracks:
  These indicate a more serious structural problem, especially if they are growing or show horizontal breaks. 

• Cracks near Doors and Windows:
  These can be caused by foundation settling or stress on the structure around openings. 

• Vertical Cracks:
  These often run from top to bottom and can be caused by foundation settling or temperature fluctuations. 

When to Worry:

• Cracks that are growing or widening: This suggests an ongoing issue that needs attention. 

• Cracks that are wider than 1/4 inch: This is a sign of potential structural problems. 

• Horizontal cracks or stair-step cracks: These often indicate foundation issues. 

• Cracks that appear suddenly or develop quickly: These could indicate a serious structural problem. 

What to Do:

• Consult a professional:
  If you are concerned about cracks in your brick wall, it's best to consult a structural engineer or a qualified contractor for an assessment and repair recommendations. 

• Monitor cracks:
  Keep an eye on the size and growth of cracks, especially if they are large or growing. 

• Address the cause:
  Depending on the cause of the cracks, you may need to address foundation issues, improve drainage, or repair structural damage. 

Note: While some cracks may be purely cosmetic, it's always best to err on the side of caution and consult with a professional to ensure the safety and structural integrity of your home. ​