4 Different Types of Foundation Cracks and What Causes Them

Noticing cracks in your foundation is no laughing matter. It is of critical importance that you call a foundation repair company immediately. The contractors will dispatch a team to your location at the earliest, who will then diagnose and repair the damages.

But did you know that there are different variations of foundation cracks? Some types are not as serious, while others need to be tended as soon as possible.

4 Major Types of Foundation Cracks

#1 Shrinkage

Shrinkage cracks are the most common type of cracks that can be seen in a foundation. These are hairline cracks that start developing a couple of months after the initial pouring of the home's foundation.

The good thing about shrinkage cracks is that they don't increase in size and more often than not do not indicate an immediate problem. However, to make sure you stay on the safer side, get a professional to check them out.

#2 Vertical

Vertical cracks, as you may have already guessed from the name, refers to cracks running up and down the foundation walls. Vertical cracks usually form when shrinkage cracks grow. According to the best foundation repair companies they are of little concern.

These cracks are the resultant of shifting or uneven compression of soil. One part of the foundation settles more than the other and the sinking creates tension. This force is ultimately responsible for the development of vertical cracks. Note that vertical cracks are rarely straight and often run at an angle.

#3 Stair-step

Stair-step cracks form from a combination of vertical and horizontal cracks. This gives it the appearance of the side view of a staircase, earning it the name 'stair-step' cracks.

These cracks occur when the foundation settles unevenly. One part of the foundation is straight while another moves up and down.

Now, whether or not the stair-step cracks in your foundation are of serious concern depends on the location of the damage.

If they are mostly concentrate on the mortar joints between the cinder blocks that constitute the wall, it can be remedied by a simple refilling. In other regions though, stair-step cracks may be demonstrative of serious internal damage and sinking.

#4 Horizontal

Out of the 4, horizontal cracks are easily the most dangerous ones. When horizontal, running cracks appear it is a sign that your foundation is beginning to heave and bow.

This happens when the backfilled soil in the exterior of the foundation begins to get overly compressed against the walls. Horizontal cracks are also common in climatic conditions which see heavy downpours followed by rapidly plummeting temperatures. The immense hydrostatic pressure that results is enough to drive a crack into your foundation walls.

Bowing foundations should never be left unattended. Given enough time, they can lead to structural collapse of your entire home.

Your Foundation, Our Expertise

Ram Jack, by American Leveling Company is among the top foundation repair companies in Oklahoma City. Apart from our unbeaten quality, we are also proud of our industry best warranty and affordable service charges. To know more about us, visit our website today!