House foundation cracks come in a wide range of sizes and shapes. It is common for foundation cracks to develop within about one year after the construction of a new building. Cracks commonly appear near windows, on the walls, on the floor, and in some sections of the foundation. Most cracks occur as a result of concrete settling and are therefore not a cause for alarm. But if cracks expand or allow water seepage, you need to contact an expert.
Having some knowledge about how to diagnose house foundation cracks and how they are repaired can help you know whether any crack that appears on your building warrants calling a crack repair company. Below, you will get some details about how to diagnose three types of cracks and what a crack repair contractor will do to repair the cracks.
Identifying Diagonal and Vertical Cracks 
In most cases, diagonal or vertical cracks in the foundation of a house occur as the concrete settles in. Such cracks are common in new buildings. Diagonal cracks are positioned diagonally while vertical cracks are perpendicular to the floor or the ground. Small vertical and diagonal cracks (less than 1/8 inch wide) are nothing to worry much about but still need to be repaired. However, vertical and diagonal cracks that are wider than 1/8 inch indicate a more serious foundation problem and need to be inspected by an expert.
Identifying Horizontal Cracks
The presence of horizontal cracks on the foundation of a house suggests that there is a more severe structural problem. For instance, there could be considerable hydrostatic pressure from the surrounding soil as it absorbs water. This can lead to foundation bowing, more severe cracks, and even foundation failure.
How to Fix Vertical and Diagonal Cracks
Small vertical and diagonal cracks can be repaired using repair methods such as polyurethane and epoxy injections. The StablWall technology, which uses carbon fibers, can be used to repair large vertical and diagonal cracks. StablWall has unique properties such as high tensile strength and stiffness, as well as the ability to withstand high temperatures. These properties enable the material to form strong bonds and prevent further crack expansion.
How to Fix Horizontal Cracks
Technologies likeStablWall, repair beams and rods can be used to fix horizontal house foundation cracks. It is important to involve an experienced contractor when dealing with horizontal cracks and large vertical and diagonal cracks.
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