Concrete Experts

Alert: Intense Heat in Austin May Cause Cracking Concrete

Concrete is a durable and versatile material, but it’s not immune to chipping or cracking — especially in hot climates like in central Texas. The intense heat and fluctuating weather patterns can significantly contribute to the cracking of concrete. Understanding these underlying causes of concrete cracks in such environments is crucial for homeowners, investors, and house flippers looking to prevent or repair concrete damage.

In Texas, temperature fluctuations throughout the year can cause concrete to expand during the heat of the day and contract during cooler evenings or nights. Over time, these repeated cycles of expansion and contraction can weaken the concrete and cause it to crack. Concrete is a rigid material, and it doesn't have the flexibility to easily accommodate these temperature shifts. In areas where temperatures rise above 100°F in summer, thermal stress can impact concrete.

The clay soils common in Texas, often referred to as "blackland prairie" soils, are known for their ability to expand when wet and shrink when dry. This cycle of wetting and drying causes soil beneath concrete slabs to shift and move. When a concrete foundation is poured over these unstable soils, it may crack as the ground shifts. During Texas’ dry spells, the soil may contract significantly, pulling the concrete slab along with it. Conversely, during heavy rains, the soil swells, putting pressure on the slab, leading to cracking.

In Texas, with its large number of cars and high temperatures, concrete surfaces like driveways, parking lots, and streets often bear heavy loads. The constant pressure from vehicles, coupled with the heat, can lead to cracks, especially if the concrete wasn’t designed to withstand these stresses. Over time, the weight of cars, trucks, and machinery can cause stress points that lead to cracking. If you've ever driven around in Texas, you may have wondered why there are potholes on the roads.

While it’s usually hot, the weather in Round Rock and surrounding Austin areas can sometimes be unpredictable, with sudden downpours followed by dry spells. When water saturates the concrete, it can penetrate the surface and weaken the bond between the concrete and the underlying materials. This moisture can cause the concrete to crack as it dries, as the surface contracts at a different rate than the underlying layers. Additionally, poor drainage around concrete slabs can lead to water pooling, exacerbating moisture damage and cracking. These two conditions combined may be why you're starting to notice cracks in your driveway or garage floor. If you're starting to see cracking in your concrete, it's time to call our expert team for a free quote today!