Basement floor cracks in an older home and new construction

Have you started seeing cracks in basement floor? It can be quite disheartening to see basement floor cracks for the very first time. They are a serious problem and need to be addressed quickly to prevent damaging your home’s foundation. Most homeowners are in a dilemma when it comes to repairing cracks in basement floor, especially those who don’t have hands-on experience in property repair. Should you repair it now or can you wait till you are undertaking an extensive repair project? 

Depending on the type and severity of the concrete basement floor cracks, you need to engage a professional contractor to repair cracks. The thing that isn’t negotiable is the urgency of the project. Early repairs not only prevent damage to your property’s foundation but can also keep the project costs low. 

Cause of Basement Floor Cracks


Concrete floors have two important components – cement and water. They cure to become solid as water evaporates the solid mass shrinks naturally. Temperature is a vital factor here as concrete curing in very cold condition or sweltering heat tend to shrink leading to cracks. Even in optimal conditions shrinkage is common. Small cracks in basement floor which are 1/8 of an inch aren’t serious concern but anything above that needs to be fixed immediately.

Settling Down

Your basement floors settle over time and in fact most contractors factor this while laying the foundation of your property. An inch of settling down due to the weight of the structure is common and it is factored in. In areas where this problem is common, home builders create that buffer of up to four inches. From unstable soil beneath to soil erosion, there are several things that lead to settlement causing crack in basement floor. Get your property surveyed by a professional to ascertain whether these cracks need urgent repairs.  


Frosting is another reason that can lead to cracked basement floor. During extended spells of cold weather soil freezes which is followed by thawing. This leads to expansion and soil shifts beneath your property. This force of contraction and expansion is passed on to your floor leading to cracks. You will notice the first signs if cracks along the support column in case of frost heave. By preventing frost heave around the property you will be able to protect your property from this problem.

Other Factors

Apart from these three there are several other factors that can lead to cracks in basement floors and these include structural problems such as unintentional errors during construction, water seepage and pests. 

How to Repair Crack?

Small hairline cracks won’t impact your property’s integrity, and you can fix them by simply sealing cracks in concrete basement floor with a sealant. However larger cracks require you to undertake an extensive repair project. You should get in touch with a professional company as leaving them unattended can pose bigger risk for the future.