causes of water leaks in basement
June 8, 2021

#1: Under the Footer

It’s common in the construction industry to leave a small space between the footer and the poured foundation floor. But excess water can build up and create pressure, causing water to seep in through this crack. This can cause damage to the inside of your home and make the basement space unusable for living space or storage.

#2: Cracks In Foundation Wall or Mortar Joints

Excess moisture in the soil around your basement walls can build up and create pressure, which can cause cracks in the foundation and allow water to seep in. If you have concrete block walls, this seeping water may not be visible until it builds up inside the blocks. This can cause mildew and other problems from excess moisture. You might also see water seeping out of the bottom of the wall.

#3: Cracks In Basement Floor

Water can build up in the soil below your basement floor and create pressure, which can then cause water to press through cracks into your basement floor. The easiest way to tell if this is happening is if you see any visible water pooling on your floor, particularly in any low spots. If you don’t see pools of water directly, there are some signs to look for that might indicate that water has previously pooled there. Pay attention to water stains or other discoloration on the floor. Also, look for efflorescence, a white or gray powdery residue of salt deposits that water leaves behind.

#4: Windows and Window Wells

Because basement windows and window wells are located below ground level in a recessed area, they can accumulate dirt, debris, water, pests, and growing plants. Window wells can fill with water during wet weather, seep out through leaks around the window opening, and flood your basement. If older basement windows and window wells have not been properly maintained, they can rust, rot, or corrode, which can create leaks into your home and cause mold or mildew problems.

You need to keep your basement windows and window wells in good shape, to help keep moisture and water out of your basement. Make sure your windows completely seal without any holes, gaps, or cracks around them.

#5: Over the Top of Your Foundation

A heavy influx of water and improper foundation grading next to your home can allow water to get into your basement. You need to make sure your gutters and downspouts are cleaned out, fully connected, and draining freely. Also, check the location of your discharge for your downspouts and your sump pump. We recommend these discharge at least 10 feet away from your property.

Watch where the water flows in your yard, and pay special attention to any pools of water close to your foundation. It’s common for the soil next to your foundation to settle over the course of the seasons, so you may need to add some topsoil next to fill in any low spots that have formed. Focus on a 6-foot perimeter around your home to make sure the soil distinctly slopes properly away from the foundation,

What To Do If You Find a Problem

If you see any problems, you should get them checked out right away. Contact us today to schedule a free consultation. We’ll thoroughly evaluate your property and give you a professional recommendation to solve the problem for good.

Visit our Ultimate Guide to Waterproofing Your Kansas City Home for more articles that will help you keep the basement of you Kansas City Metro area home dry and strong.

Proud to provide Professional Basement Waterproofing and Foundation Repair to the families in Topeka, Kansas. See our Service Area page to find out all the Kansas and Missouri cities we serve.

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Satisfied Customer Reviews

KC Waterproofing did a great job installing a new sump pump and other water mitigation items. Friendly crew, arrived each day as planned and finished in just 2.5 days!
A sump pump was installed very quickly.
Gerry and Davan were excellent. They protected the house and basement from extra dust and just going in and out to get the tools.
Digging up the yard to install the pipe...they replaced the sod and cleared the extra yard waste. Also they were very friendly with our dog.
Mario was great. Very upfront about any issues and possibilities to move forward. Would call again. Thanks!
Very happy with the work KC Waterproofing did for us. Jessie and Melvin were very efficient, courteous, and happy to answer any questions we had. The repair was very thorough and we feel relieved this will address the foundation issues we had.
Mario was my tech. Thorough and answered all questions without hesitation.
Mario was super friendly and professional. The job was done quickly. We are very happy with the work and have peace of mind with the warranty provided.
We recently had foundation repairs with multiple piers and poly-fill. Not only were they professional on-site, but one of the employees even noticed a package sitting outside starting to get rained on so they placed it in my mudroom. They kept me informed through the process and ensured I understood each repair prior to commencing.
Mario is the best guy they have. Thank you for hearing my concerns and addressing the issue. Appreciate your professionalism.
Great crew (Schylur and Marvin). Very customer focused.
KC Waterproofing and Foundation Repair did an excellent job on my sump pump installation and crack repairs. Gary and Davan were not only skilled but genuinely thoughtful throughout the process. We had a bit of miscommunication early on, and instead of brushing it off, they listened carefully, acknowledged what happened, and adjusted their plan so everything aligned with what I needed.

They brought me in at every step—showing me options for the pump location, explaining the exit pipe decisions, and making sure I felt confident about the work being done. Their friendliness and respect made a stressful home repair feel manageable.

I’m grateful for their care and would absolutely recommend them.