Stress Crack Problems in Bricks

Types

• There are two major types of stress cracks in bricks. The first involves stress cracks that occur on single bricks and that can be seen on the surface. The second involves stress cracks that can be seen throughout the entire wall, running along the mortar joints and through some bricks.

Causes

• Stress cracks in single bricks are typically manufacturing defects, or they may be caused by breaks when the bricks were being installed. Stress cracks that run throughout an entire wall are caused by significant movement, such as foundation problems, large tree roots, loose soil or moisture intrusion.

Problems

• Small, single brick cracks will not pose any serious problems other than aesthetic issues, at which point the affected brick can be replaced. Larger cracks should be inspected by a home professional to see what the problem is, and whether it is a problem that could get much worse over time if not repaired immediately. Stress cracks in bricks are usually early warning signs of larger problems with a home.

Expected Cracks

• All buildings, including homes, settle into place over time. The building envelope, which is the outside of the building, can also expand and contract during different seasons, in extreme temperatures and depending on whether there is a significant amount of moisture present. This movement can result in small stress cracks in bricks, which are not a serious problem.