Foundation Crack & Void Repair San Antonio, TX
Financing Available
All Work Warrantied
Fast Response Times
Over 40 Years of Experience
Request Estimate
Don’t Ignore Foundation Cracks—They’re Warning Signs Your Home Needs Help
Your foundation is what everything else depends on. When cracks start showing up or you hear about voids beneath your home, it’s natural to worry about what’s really going on under there. Here’s the truth: not every crack means disaster, but some cracks and voids are warning signs you shouldn’t ignore. The challenge is knowing the difference and getting honest answers about what your home actually needs.
At Foundations First Texas, we’ve spent over 40 years helping San Antonio homeowners figure out exactly that. We’ll tell you when something needs immediate attention and when you can breathe easy. We’re not here to sell you repairs you don’t need—we’re here to help you protect your home and understand what’s happening beneath it. Contact us today for a free, no-pressure estimate and get straight answers about your foundation.
Why San Antonio Foundations Develop Cracks and Voids
San Antonio is tough on concrete. Between the shifting clay and the weather, most local homeowners will eventually face some foundation movement. It isn’t bad luck or a bad house—it’s just the reality of the ground we build on.
Expansive Clay Soil
Most of the San Antonio area sits on clay soil, which is notorious for causing foundation problems. Clay expands dramatically when it gets wet and shrinks considerably when it dries out. During rainy periods, the soil swells and pushes against your foundation. During droughts, it contracts and pulls away, leaving gaps and voids. This constant push-and-pull creates stress that eventually shows up as cracks.
Our Weather Patterns
Our region shifts rapidly from extreme heat to heavy rainfall. When a storm breaks a long drought, the dry soil drinks up the water and expands rapidly. This sudden pressure change puts massive strain on your foundation. The concrete simply cannot flex fast enough to match the movement of the earth below it.
Bad Drainage
Bad drainage creates “hot spots” of movement. If water pools near your perimeter, that specific section of soil swells while the rest stays dry, twisting the slab. Furthermore, uncontrolled water flow can erode the soil physically, washing it away and leaving hollow “voids” that cannot support the weight of your house.
Your foundation is under constant pressure from forces you can’t see. By the time you see a crack, that pressure has already done its work.
How to Know If Your Cracks and Voids Are Serious
Not every crack means you need immediate repairs, but some warning signs shouldn’t be ignored. Here’s what to watch for:
Visible cracks in your walls—inside or outside
Small hairline cracks might just be cosmetic, but cracks that are wider than a quarter-inch, growing over time, or forming stair-step patterns in brick are telling you something’s wrong. Pay special attention to diagonal cracks near doors and windows.
Gaps, crevices, and unfilled voids in your foundation
If you can see actual gaps in your foundation or notice the ground has settled away from your foundation wall, that’s a sign soil has eroded or compacted unevenly beneath your home.
Water damage or dampness around your foundation
Water infiltrating through cracks or pooling around your foundation accelerates damage and points to drainage problems that need fixing. Dampness in your basement or crawl space often means water is getting in through foundation cracks.
Doors and windows that suddenly stick or won’t close right
When your foundation shifts, it throws your door and window frames out of alignment. If doors that used to close fine now scrape against frames or won’t latch, your foundation has likely moved.
Floors that feel uneven or slope noticeably
When you feel like you’re walking uphill in your own house, or when you can see gaps under baseboards, your foundation has settled unevenly—often because of voids or soil movement beneath it.
Gaps between walls and ceilings or floors
Visible separation where walls should meet ceilings or floors means structural movement. This is your house literally pulling apart because the foundation isn’t level anymore.
If you’re seeing several of these signs, or if any of them are getting worse over time, it’s worth getting a professional evaluation. The earlier you catch foundation problems, the simpler and less expensive repairs typically are.
How We Repair Foundation Cracks and Voids
At Foundations First Texas, our approach to crack and void repair focuses on actually fixing the problem—not just covering up symptoms that’ll come back later.
For Foundation Cracks
We use specialized techniques and materials designed specifically for foundation repair. The goal is to properly fill and seal cracks so they don’t allow water infiltration and so the repair lasts. We’re not just slapping caulk on the surface—we’re restoring your foundation’s structural integrity with proven methods and quality materials.
For Foundation Voids
Voids need to be filled to restore support beneath your foundation. We use techniques that fill these empty spaces, stabilize the soil, and give your foundation the solid, even support it needs. This prevents further settling and cracking while restoring stability to your home.
Our Approach
Every home is different, and every foundation problem has unique causes. We evaluate what’s actually happening with your foundation—the root causes, not just the visible symptoms. Then we recommend repairs that address those causes and protect your home long-term.
We use proven techniques we’ve refined over four decades in the San Antonio area. Our repairs are backed by warranties because we’re confident they’ll hold up. We’re not interested in temporary fixes that fail in a few years—we want to solve your foundation problems once and for all.
Why Homeowners Trust Foundations First Texas
When you’re facing foundation repairs, you need straight answers from people who know what they’re doing and who care about doing right by you.
Over 40 Years of Combined Experience
We’ve been repairing foundations in the Greater San Antonio area for decades. We understand how local soil behaves, what causes foundation problems here, and what actually works to fix them. That experience matters when your home is on the line.
Locally Owned, Family Operated
We’re not a national chain. We’re your neighbors, and we’re invested in this community. Our reputation depends on the quality of work we do for people right here in San Antonio. That means we’re committed to treating your home the way we’d want ours treated.
Honest Evaluations
We’ll tell you what you need and what you don’t. Some companies try to sell every homeowner the most expensive repair package possible. We’re not those guys. If your cracks are minor and don’t need major repairs, we’ll tell you. If you’ve got a serious issue, we’ll be straight about that too.
No-Pressure, Free Estimates
We provide detailed estimates at no cost and with absolutely no obligation. You get to understand exactly what’s happening with your foundation, what it would take to fix it, and what it costs—then you decide what’s right for you. No sales pressure, no games.
Financing Options Available
Foundation repairs aren’t usually planned expenses, and we understand that. We offer financing options to help you get necessary repairs without creating financial hardship. Protecting your home shouldn’t mean sacrificing your financial stability.
Warranted Work
Every repair we do comes backed by a warranty. We stand behind our work because we’re confident in the quality. If something goes wrong with our repairs, we make it right—that’s the warranty and that’s our commitment to you.
Fast Response
When you reach out to us, we don’t leave you waiting and worrying. We respond quickly and get someone out to evaluate your foundation as soon as possible. We know foundation concerns are stressful, and we don’t drag our feet.
Let’s Figure Out What Your Foundation Needs
You shouldn’t have to stare at a crack in the wall and wonder if your house is unsafe. Uncertainty is stressful, but the solution is simple. A quick, free look from our team can tell you exactly what is happening—and often, it’s not as bad as you think.
We’ve spent over 40 years crawling under floors and inspecting slabs right here in San Antonio. We know the difference between a settling house and a broken one.
Don’t let a small crack turn into a big worry. Let’s get to the bottom of it.
Reach out today for your free evaluation. No pressure, no scare tactics—just honest expertise from a team that has been protecting local homes for over 40 years.
All Work Warrantied
With over 40 years of experience, we deliver top-quality foundation repair services. Financing options are available to ensure your home stays safe without breaking the bank.
Client Testimonials
Here’s what our satisfied customers are saying:
Living U
Professional, timely and willing to share their knowledge and educate me and my clients on their specific issue and affordable options and not try to gouge them just because they have a nice house and a timeline to address the issue. Will definitely use them moving forward. They saved my seller’s thousands of dollars based on another bid we received.
Cindy K
FFNW
Learn More About
Foundations First Texas
Serving the Greater San Antonio, TX area. Foundations First Texas specializes in foundation repair services. Financing is available. All work is warrantied. Fast response times. Call us today for a free estimate.
Watch Us
Youtube Channel
I am pleased with the services performed by Foundations First Northwest. Everyone I interacted with from the company, either on the phone or in person, was professional and polite. The job was finished within the time proposed. Pictures documenting the work was part of the package. The foreman, Lehi went above and beyond by giving explanations throughout the process.