Cracks of varying widths and angles are common concrete slabs. Most of these cracks are small and harmless. Some cracks that are longer and wider may have more of an impact on the slab floor.
If the soil beneath the slab was not properly graded and prepared when the slab was poured they can be susceptible to erosion which will lead to the cracking and collapse of parts of the concrete slab. Also, the heating of the slab can lead to the slab expanding into another slab causing expansion cracks. Finally, as concrete cures, small cracks can appear in your home’s basement slab. These small cracks are generally insignificant and have very little impact on your home’s structural integrity. However, these small cracks could allow water seepage.
Do I Need to Fix This?
All of these cracks need to be monitored and assessed for water and insect infiltration and future slab failure. Shrinkage cracking and checking due to quick curing of the concrete are generally cosmetic in nature, but can grow over time and should be monitored. Expansion and settlement cracking usually will continue to worsen over time and should be evaluated by a concrete repair professional who can provide options for restoring your slab for ultimate performance and to mitigate water and insect intrusion.
There are multiple, plausible solutions for cracks in slab floors. Some solutions are smaller in scale, others can be intrusive and a larger scaled project. For a customized solution, contact a trained profession for an assessment fitted to your situation.