St. Louis Basement Waterproofing
St. Louis Basement Waterproofing
Water in your basement isn't just an inconvenience, it's a threat to your home's foundation, your belongings, and your family's health. Quality Waterproofing has been fixing St. Louis basements for over 70 years. We find the real problem and fix it right the first time.
Water in your basement isn't just an inconvenience, it's a threat to your home's foundation, your belongings, and your family's health. Quality Waterproofing has been fixing St. Louis basements for over 70 years. We find the real problem and fix it right the first time.
Free inspections
Lifetime warranty available
Financing available


70+
Years in St. Louis
70K
Successful Jobs
4.9
Google Rating
350+
Verified Reviews
70+
Years in St. Louis
70K
Successful Jobs
4.9
Google Rating
350+
Verified Reviews
70+
Years in St. Louis
70K
Successful Jobs
4.9
Google Rating
350+
Verified Reviews
The Risk
Ignoring a wet basement always costs more later.
Water doesn't stop on its own. Every season it goes untreated, the damage compounds, and so does the repair bill.
Foundation damage worsens over time
What starts as a hairline crack widens with every freeze-thaw cycle. A $500 crack repair left unaddressed becomes a $15,000 foundation stabilization job.
Mold Grows Quickly
Moisture in your basement creates perfect conditions for mold growth. Once it spreads into framing and drywall, remediation costs can exceed the original waterproofing job many times over.
Home Value Declines
Water damage is one of the top red flags in a home inspection. A history of basement water issues can reduce your home's value and derail a sale when you're ready to move.
Lost living space
A wet basement eliminates usable square footage and can destroy stored belongings, furniture, and anything else you've trusted to that space.
The Risk
Ignoring a wet basement always costs more later.
Water doesn't stop on its own. Every season it goes untreated, the damage compounds, and so does the repair bill.
Foundation damage worsens over time
What starts as a hairline crack widens with every freeze-thaw cycle. A $500 crack repair left unaddressed becomes a $15,000 foundation stabilization job.
Mold Grows Quickly
Moisture in your basement creates perfect conditions for mold growth. Once it spreads into framing and drywall, remediation costs can exceed the original waterproofing job many times over.
Home Value Declines
Water damage is one of the top red flags in a home inspection. A history of basement water issues can reduce your home's value and derail a sale when you're ready to move.
Lost living space
A wet basement eliminates usable square footage and can destroy stored belongings, furniture, and anything else you've trusted to that space.
The Risk
Ignoring a wet basement always costs more later.
Water doesn't stop on its own. Every season it goes untreated, the damage compounds, and so does the repair bill.
Foundation damage worsens over time
What starts as a hairline crack widens with every freeze-thaw cycle. A $500 crack repair left unaddressed becomes a $15,000 foundation stabilization job.
Mold Grows Quickly
Moisture in your basement creates perfect conditions for mold growth. Once it spreads into framing and drywall, remediation costs can exceed the original waterproofing job many times over.
Home Value Declines
Water damage is one of the top red flags in a home inspection. A history of basement water issues can reduce your home's value and derail a sale when you're ready to move.
Lost living space
A wet basement eliminates usable square footage and can destroy stored belongings, furniture, and anything else you've trusted to that space.
Why Choose Quality
We don't just fix symptoms. We fix the real problem.
Any contractor can slap hydraulic cement on a crack and call it done. We take a different approach, because a fix that doesn't last isn't a fix at all.
1
We find the true cause first
Our inspectors don't write estimates before they understand why water is getting in. Hydrostatic pressure, drainage failure, and cracks all require different solutions. We diagnose before we prescribe.
1
We find the true cause first
Our inspectors don't write estimates before they understand why water is getting in. Hydrostatic pressure, drainage failure, and cracks all require different solutions. We diagnose before we prescribe.
2
We give you a system, not a patch
Our solutions address the root cause — interior drainage, exterior grading, crack injection, sump systems — whatever your specific situation actually requires.
2
We give you a system, not a patch
Our solutions address the root cause — interior drainage, exterior grading, crack injection, sump systems — whatever your specific situation actually requires.
3
We back it with a warranty
Depending on the system you choose, we can back it up with a lifetime warranty to give you full peace of mind. We stand behind our work because we know it works and you will not need to call us back to fix the problem again.
3
We back it with a warranty
Depending on the system you choose, we can back it up with a lifetime warranty to give you full peace of mind. We stand behind our work because we know it works and you will not need to call us back to fix the problem again.
4
We won't oversell you
We've built 70 years of reputation on honest assessments and recommending the right solution, even when a smaller fix is all that's needed.
4
We won't oversell you
We've built 70 years of reputation on honest assessments and recommending the right solution, even when a smaller fix is all that's needed.
How it Works
Four steps to a dry basement
01
Schedule your free inspection
Book online or call us. One of our certified inspectors will come to your home at a time that works for you — no pressure, no obligation.
02
We diagnose the real problem
Your inspector will do a thorough walkthrough, identify the source of the water intrusion, and explain exactly what's happening in plain language.
03
You get a custom repair plan
We'll present a written plan with clear pricing and options. You'll understand what we're doing and why before any work begins.
04
Rest easy with our warranty
Our certified crew completes the work, leaves your home cleaner than we found it, and you're covered by our craftsmanship warranty.
How it Works
Four steps to a dry basement
01
Schedule your free inspection
Book online or call us. One of our certified inspectors will come to your home at a time that works for you — no pressure, no obligation.
02
We diagnose the real problem
Your inspector will do a thorough walkthrough, identify the source of the water intrusion, and explain exactly what's happening in plain language.
03
You get a custom repair plan
We'll present a written plan with clear pricing and options. You'll understand what we're doing and why before any work begins.
04
Rest easy with our warranty
Our certified crew completes the work, leaves your home cleaner than we found it, and you're covered by our craftsmanship warranty.
How it Works
Four steps to a dry basement
01
Schedule your free inspection
Book online or call us. One of our certified inspectors will come to your home at a time that works for you — no pressure, no obligation.
02
We diagnose the real problem
Your inspector will do a thorough walkthrough, identify the source of the water intrusion, and explain exactly what's happening in plain language.
03
You get a custom repair plan
We'll present a written plan with clear pricing and options. You'll understand what we're doing and why before any work begins.
04
Rest easy with our warranty
Our certified crew completes the work, leaves your home cleaner than we found it, and you're covered by our craftsmanship warranty.
Customer Reviews
Don't take our word for it
4.9 stars across 350+ Google reviews. Here's what a few of your St. Louis neighbors had to say.

Jade P.
St. Louis
I have trusted Quality Waterproofing with many home projects and they have never failed me! Andrew Timp and the service team are amazing! Will continue referring them as well as using them for my own projects!

Jade P.
St. Louis
I have trusted Quality Waterproofing with many home projects and they have never failed me! Andrew Timp and the service team are amazing! Will continue referring them as well as using them for my own projects!

Jade P.
St. Louis
I have trusted Quality Waterproofing with many home projects and they have never failed me! Andrew Timp and the service team are amazing! Will continue referring them as well as using them for my own projects!

Ted W.
St. Louis
Greg Dunn and Quality Waterproofing were very responsive when we had a sump pump problem. They were able to get a tech here even with the high workload after a storm, spotted the problem, and got it fixed quickly.

Ted W.
St. Louis
Greg Dunn and Quality Waterproofing were very responsive when we had a sump pump problem. They were able to get a tech here even with the high workload after a storm, spotted the problem, and got it fixed quickly.

Ted W.
St. Louis
Greg Dunn and Quality Waterproofing were very responsive when we had a sump pump problem. They were able to get a tech here even with the high workload after a storm, spotted the problem, and got it fixed quickly.

Randall K.
St. Louis
Quality Waterproofing is a company of integrity. They focus on “going the extra mile” to see that their customers receive exactly what’s needed at reasonable cost. They don’t oversell. In fact they will counsel you to follow the most prudent approach.

Randall K.
St. Louis
Quality Waterproofing is a company of integrity. They focus on “going the extra mile” to see that their customers receive exactly what’s needed at reasonable cost. They don’t oversell. In fact they will counsel you to follow the most prudent approach.

Randall K.
St. Louis
Quality Waterproofing is a company of integrity. They focus on “going the extra mile” to see that their customers receive exactly what’s needed at reasonable cost. They don’t oversell. In fact they will counsel you to follow the most prudent approach.

Kari L.
St. Louis
They were amazing! They found a plumbing problem that could possibly be the source of our water issue. Rather than recommending expensive work off the bat like another company I contacted, they recommended I fix the plumbing issue first and see if I still had the problem. Fantastic.

Kari L.
St. Louis
They were amazing! They found a plumbing problem that could possibly be the source of our water issue. Rather than recommending expensive work off the bat like another company I contacted, they recommended I fix the plumbing issue first and see if I still had the problem. Fantastic.

Kari L.
St. Louis
They were amazing! They found a plumbing problem that could possibly be the source of our water issue. Rather than recommending expensive work off the bat like another company I contacted, they recommended I fix the plumbing issue first and see if I still had the problem. Fantastic.

Jessica H.
St. Louis
We had four leaking cracks in our basement repaired and we’re very happy with the service received. All of the employees were very kind and professional. The repairs were done quickly and no messes were left! Highly recommend!

Jessica H.
St. Louis
We had four leaking cracks in our basement repaired and we’re very happy with the service received. All of the employees were very kind and professional. The repairs were done quickly and no messes were left! Highly recommend!

Jessica H.
St. Louis
We had four leaking cracks in our basement repaired and we’re very happy with the service received. All of the employees were very kind and professional. The repairs were done quickly and no messes were left! Highly recommend!

Ali K.
St. Louis
They didn’t try to sell on anything unreasonable and even recommended alternative solutions as to not run my bank dry. Will be calling for any and all related issues in the future.

Ali K.
St. Louis
They didn’t try to sell on anything unreasonable and even recommended alternative solutions as to not run my bank dry. Will be calling for any and all related issues in the future.

Ali K.
St. Louis
They didn’t try to sell on anything unreasonable and even recommended alternative solutions as to not run my bank dry. Will be calling for any and all related issues in the future.
Ready for a dry basement?
Schedule your free inspection today. No obligation, no pressure, just an honest assessment from St. Louis's most trusted waterproofing team.
Ready for a dry basement?
Schedule your free inspection today. No obligation, no pressure, just an honest assessment from St. Louis's most trusted waterproofing team.
Ready for a dry basement?
Schedule your free inspection today. No obligation, no pressure, just an honest assessment from St. Louis's most trusted waterproofing team.
FAQ
Frequently Asked Questions
We know that fixing the structure of your property can bring a lot of questions. We hope this helps. Please contact us if you need further clarification!
How long have you been in business?
Many companies will state that they have a certain number of years of combined industry experience, but they do not tell you how many years they have been in business as a company. Since most services are accompanied by a warranty that extends beyond the date of work completion, it is important to know you have a company that lasts. Quality Waterproofing has been in business since 1955. We belong to both the Basement Health Association and the Home Builders Association of St. Louis.
Is your warranty verbal or in writing?
Are you accredited with the BBB?
Are you fully licensed and insured?
Do you perform a drug and background check on your employees?
Are you a franchise?