Slab Foundation Information

Slab foundations are the most common type of foundation found in Houston because they are designed for the city’s soil type and they are cost effective to put in place. Slab foundations do have a few disadvantages over other types of foundations. The most common problems that affect concrete slab foundations typically are caused by poor planning during the initial construction of the home. Slab foundations can develop issues over time, however, if graded, mixed and poured properly a slab foundation will typically last several decades without any type of degradation. Below are the three most consistent issues that slab-on-grade foundations face.

Concrete Slab Finshing

1. Movement and Shifting

The number one most common issue with slab foundations in Houston is movement. Slab foundations are typically graded and poured at a very shallow depth and this allows for the changes in the expansive soil to easily affect the level of the foundation. As the soil contracts and then expands, the foundation will experience uneven points of pressure which causes sinking, cracking and settling.

2. Differing Soil Moisture

During the initial construction the soil around a slab foundation should have a consistent moisture level if it is being poured by a professionally certified concrete specialist. Unfortunately the Texas heat and the lack of consistent moisture can play a role in the flexing of the foundation. The concrete moisture itself can also play a role in the levels once it is poured as the soil below the foundation will be much more moist than the exterior of the slab. This can cause the foundation to flex, bow and crack. All of which will be very noticeable to a homeowner.

3. Root Infiltration

Trees and plants in and around your home can also affect the health of your slab foundation. As the soil directly beneath the foundation will have more moisture than the perimeter, the environment is more suitable for tree roots to move toward. These tree roots can push the foundation up, cause cracking, grow into cracks, and increase expansion. Many homeowners and builders will place root barriers next to their foundation to ensure that tree roots do not cause problems for their foundation over time.

Slab foundations do have a tendency to be susceptible to different kinds of issues, they can however be avoided or repaired through typical foundation maintenance and repair. Give AAA Foundation Service a call today and let us go to work for you.

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