You should be worried about foundation cracks that have the following signs:

  1. Cracks larger than the diameter of a quarter (0.75 inchs)
  2. Cracks that have a “step pattern” – common in block foundations
  3. Long diagonal cracks that extend over 2 meters
  4. Foundation cracks that extend from the ceiling to the floor
  5. Cracks that have moisture or water leaking out of them
  6. Foundation cracks that continue to grow over time.

If you spot a foundation crack we recommend taking a photo of it and sending the image to Renco. We can provide advice on whether the crack is serious and what to do next.