You found a crack, and now you want to know how worried to be.
You found a crack, and now you want to know how worried to be. Is it normal settling, or is your foundation actually moving? Often you cannot tell from the crack alone. A hairline split in a poured wall can be harmless. A stair-step crack through block, a door that has started to stick, or a wall with even a slight bow to it can all point to something structural.
What separates the two usually comes down to the clay under your home. Johnson County sits on expansive soil that swells when it takes on water and shrinks as it dries out, and that seasonal movement is a leading cause of the settling, cracking, and wall movement homeowners see in Overland Park.
KC Waterproofing and Foundation Repair has worked on foundations across the Kansas City area since 1985, and every repair carries a lifetime transferable warranty.
Foundation movement leaves the same handful of marks, and they show up in places you walk past every day. Knowing what to look for, and where, tells you whether the crack you found is worth a closer look.
A single hairline crack on its own is often nothing. What matters is the pattern: several of these signs together, or any one of them widening over a few weeks, points to active movement and is worth having looked at before it costs more to correct.
Clay almost never lifts or drops a house evenly. One side of the foundation sits over soil that stays damp while another dries out and pulls away, and the structure cracks along the line where the two meet. That uneven movement is what turns ordinary soil into a foundation problem, and several local conditions feed it.
The Kansas City area swings between heavy spring rain and long dry stretches by late summer. Clay swollen with April moisture shrinks back as the ground dries through August, and the foundation rides that expansion and contraction year after year. Winter adds a second cycle, since soil moisture freezes and thaws and the ground heaves and resettles again. The more often the soil changes volume, the more stress reaches the foundation.
Where rainwater goes after it lands decides how much the soil moves. Gutters that empty against the house, downspouts that stop short of carrying water away, and a yard graded back toward the foundation all soak the clay right beside the footing. Saturated clay pushes sideways, and that lateral pressure is what bows block walls inward and opens the long horizontal cracks you sometimes see partway up a basement wall.
Many Overland Park neighborhoods went up decades ago on concrete block foundations. Block follows the clay’s movement along its mortar joints, which is why the stair-step crack is such a common sight on older homes here. The drainage built alongside those houses has had just as long to clog or fail, and a system that no longer moves water keeps the surrounding soil wet far longer than it should.Most homes in the area deal with some mix of these, which is why pinning down the actual cause beats guessing from the crack.
The right repair depends on what the soil is doing and where the damage has shown up. A foundation that has settled needs support carried down to ground that holds. A wall pushed inward by wet clay needs to be braced and held against that pressure. The two problems come from opposite ends of the same soil cycle, so the work starts with an inspection that determines which one you actually have.
When clay dries and shrinks, the soil under part of the house loses its grip and that section drops. Helical piers correct it by reaching past the active clay layer to soil that stays stable year-round. Our team calculates how many piers a home needs, then drives them into the ground with hydraulic equipment until each one hits load-bearing strata. The weight of the house transfers onto the piers, and the settled section can often be lifted back toward its original position. The work moves quickly and leaves most of the yard undisturbed.
A basement wall that bows inward or leans is responding to lateral pressure from saturated clay pushing against it from outside. Wall anchors hold the wall against that force. An anchor plate seated in stable soil out in the yard connects through a steel rod to a plate on the inside face of the wall, and tightening the assembly stabilizes the wall and can gradually draw it back toward straight. It is a long-term fix, and it works best paired with drainage that keeps the soil behind the wall from saturating again.
Foundation movement often comes with water and concrete problems that need their own fixes. If the soil pressure traces back to drainage, our basement waterproofing work addresses that, and sunken driveways or patios fall under concrete leveling.
A free inspection. A written repair plan. The recommended work explained before you decide.
We inspect the concern and the conditions around it.
We explain our findings and prepare your written repair plan.
Our team completes the agreed work with care for your home.
We explain the completed work, care and written warranty.
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Everyone I’ve interacted with from KC Waterproofing has been a delight. Friendly, professional and hardworking - from our Foundation Specialist Patrick to every member of Schylur’s crew who completed the work. Their clear communication with me throughout the course of the project was very appreciated. The crew clearly enjoys working together as well as the work they are doing, which gives me full confidence in the caliber of the end result. I would contract them again without reservation and happily recommend them to anyone in need of crawl space waterproofing services.
Connor and his crew did an excellent job fixing our foundation. I can't believe they finish it in 5 days. Hardworking and professional crew. I would recommend them to anybody. Even clean up the basement really well.
Connor and his crew did an excellent job fixing our foundation. They finish it in 5 days and we love the result. Left our basement spotless as well. Would recommend them to anybody.
Mario serviced my sump pump today and did a good job. He also replaced tape on my wall shield. He provided excellent customer service and was willing ti come out any time needed or said to call him anytime if I had any questions.
Great price, great work! In just 3 days, Jesse’s team added two sump pumps and over 40’ feet of channeling with the full wall systems. No more towels, fans, and dehumidifier after every big rain storm!
KC Waterproofing and Foundation Repair has taken incredible care of my home through multiple visits. Gary and Davan handled my initial sump pump installation and crack repairs, and they were not only skilled but genuinely thoughtful throughout the process. We had a bit of early miscommunication, and instead of brushing it aside, they listened, acknowledged what happened, and adjusted the plan so everything aligned with what I needed. They brought me in at every step—walking me through pump location options, explaining the exit pipe decisions, and making sure I felt confident about the work being done. Their friendliness and respect made a stressful repair feel manageable. Later on, I had some cracks that needed to be reassessed, and Mario came out to take a look. He was incredibly kind, patient, and thorough, and he did an amazing job with the additional repairs. His calm, reassuring approach made me feel completely taken care of. I also want to highlight Don, the manager, who is just as kind and committed to making sure customers feel heard and supported. It’s clear this team truly values doing right by people. I’m grateful for their care and would absolutely recommend them for any foundation repair or waterproofing needs.
I am extremely grateful for the amazing work done by Gerry Reynolds and his crew at KC Water Proofing! They did an amazing job installing a drainage system, sub pump, and wall wrap. I would recommend them to anyone needing peace of mind in water proofing their sub basement. Thank you for the hard work!
Excellent service and work! I’ve worked with KC Waterproofing and Foundation Repair twice now (for foundation work and most recently window well/waterproofing work). I have been satisfied with their work both times. Always easy to schedule and Recently Riley helped with a quote and was not pushy about moving forward; which was my experience a few years ago too. They don’t take up hours of time to give a quote which I appreciate. The team that did the recent work (main contact was Schuyler) were easy to work with and talk too, very kind. You can tell this group of people works together and works together well. They had a lot of hand digging and they did it very quickly. When an unexpected issue arose (removing some sidewalk) Schuyler laid out the what/why/how plainly in an easy to understand way. They did replace the sidewalk concrete. It was a big job and they got it done in a day and a half and were in high spirits throughout. They cleaned up a lot after the project too, which is appreciated. Schuyler did a final walk-through and answered any questions I had. Pricing was good too, I got another quote that was astronomical for pricing and the other company wasted 3 hours of my time to provide a quote. If I need anything in the future I won’t bother with a second quote as I’ve always had excellent experiences with KC Waterproofing. The support staff is very kind and helpful too, as well as prompt. Overall, excellent experiences; highly recommend!
We had a leak in what we thought was our foundation. Water coming in under our basement floor. Francis Heisinger came and checked it out for us. He could have recommended a French drain that would entail digging, pipes, removing and replacing concrete and lots of money. Being the honest man that he is, he gave us his opinion as to what the problem entailed. Thank you so very much. Should we ever need foundation work done, we will definitely use this company!
KC Waterproofing starts with a free inspection, recommendations for your property, and written promises behind the work. Serving Kansas City homeowners since 1985.
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Custom-engineered recommendations, a clear written estimate, and room to ask every question.
“Had an initial consultation with Camden. He was upfront, professional, honest, and very knowledgeable. We haven’t yet made a decision as to next steps, but our experience with the consult was top-notch.”
Protection that stays with your home, even when you sell.
We stand behind our work with a written money-back guarantee.
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Cost depends on the condition of your home, access and the work it needs. Your free inspection gives us the information to prepare a written estimate.
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Your money is never at risk.Our written money-back guarantee stands behind the work.
Before you decide
Answers about repair options, cost and next steps for your property.
Repair settlement, bowing walls and structural movement with a plan based on your home.
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Manage water intrusion with drainage, sump pumps and waterproofing designed around the source of the leak.
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Address moisture, humidity and damaged supports beneath your home.
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Two offices in North Kansas City and Grandview. Serving homes across the Kansas City metro and surrounding Missouri and Kansas communities.
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