A sinking slab, whether part of a driveway, patio, or walkway, can cause significant issues if neglected. Identifying signs of a sinking concrete slab can save homeowners from future structural problems and costly repairs. Here are six signs that the concrete slab for your contracting job is sinking and requires immediate attention.
Visible Depressions or Fractures
The appearance of depressions or fractures on a concrete slab often signals that it’s uneven. These irregularities can occur due to soil settlement or erosion underneath the slab. Over time, the unsupported concrete begins to crack, creating hazardous conditions and affecting the aesthetic value of the property.
Pitting, Flaking, and Staining
Weather conditions like rain and snow and errors during the mixing phase can lead to pitting, flaking, and staining of concrete surfaces. These defects will impact the concrete’s appearance and weaken the material, exacerbating the sinking process. Regular maintenance and sealing can mitigate these effects, but visible deterioration often suggests deeper issues.
Multiple Trip and Fall Occurrences
Increased trips and falls on a concrete surface typically point to uneven slab sections. As the slab sinks, edges can protrude or become uneven, creating a safety hazard for pedestrians. As the contractor, it’s your job to inspect and repair the sunken concrete to ensure the homeowners are not at risk of injury.
Visible Gaps and Voids
Gaps and voids between the concrete slab and other structures, such as walls or adjacent slabs, often develop as the slab sinks. These unsightly voids can lead to further damage, as they expose more surface area to elements like water and ice that accelerate deterioration.
Noticeable Difference Between Other Concrete Areas
When one section of concrete looks different in elevation compared to the surrounding areas, it’s likely experiencing subsidence. This unevenness can result in pooling water, exacerbate soil erosion, and speed up the sinking process.
The Ground Feels Funny When You Walk Over It
If walking over a concrete slab feels unstable or you notice vibrations, the slab may not have enough firm support. This could result from voids or soft spots in the soil below, often caused by water erosion or poor compaction during installation.
Understanding these six signs that a concrete slab is sinking will help you address any issues promptly. The goal is to avoid further damage and help clients improve the quality of concrete slabs.
Using concrete slab lifting equipment from Spray Foam Systems can help you rectify these issues, restoring the slab to its original level and stability. Review the homeowner’s concrete installations during your initial assessment, and act quickly if you see signs of sinking.
