Basement Waterproofing
Stop water from ruining your basement. A-Proseal keeps Chicago homes dry with drain tile systems, sump pumps, crack repairs, and wall membranes that last.
Your Trusted Basement Waterproofing Team in Chicago
Chicago weather is tough on basements. Heavy rain in spring, melting snow in winter, and clay soil that holds water all year long. That constant moisture pushes against your foundation and finds a way inside. It seeps through cracks, floor joints, and porous block walls. Once water gets in, it damages your floors, your walls, and the things you store down there.
A-Proseal has been solving wet basement problems across Chicago and the suburbs since 2000. We are a family-owned company, and we do every job with our own trained crew. We never send subcontractors to your home. When you call us, you talk to real people who know basements inside and out.
Our team handles every part of basement waterproofing. We install interior drain tile systems, set up sump pumps with battery backup, seal foundation cracks, and apply vapor barriers to your walls. We look at the full picture and build a plan that fits your home and your budget.
Whether you see standing water after a storm or just notice a damp smell that will not go away, we can help. Call us today or fill out the form to schedule your free same-day inspection. There is no pressure and no obligation.
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Signs Your Chicago Basement Needs Waterproofing
How We Waterproof Chicago Basements
Free Basement Inspection
We come to your Chicago home and check every part of your basement. We look at walls, floors, cracks, and the area around your foundation. Then we explain what we found in plain language and give you a written estimate. There is no cost and no obligation.
Custom Waterproofing Plan
Every basement is different. Some need drain tile. Some need crack repair. Some need all of it. We design a plan that matches your home and solves your specific water problem. You see the full scope of work and the cost before we start.
Professional Installation
Our trained crew gets to work. We install drain tile, set up sump pumps, seal cracks, and apply vapor barriers. We protect your floors, control dust, and keep the work area clean. Most jobs finish in one to three days.
Final Walkthrough
When the job is done, we clean up everything. Then we walk you through the entire system and show you how it works. We go over your warranty and answer every question you have before we leave your home.
What You Get With Our Basement Waterproofing
Interior Drain Tile
Perforated pipes run along the base of your walls inside a gravel bed. They catch water before it reaches your floor and send it straight to the sump pump.
Sump Pump With Battery Backup
A strong primary pump moves water out of your home around the clock. The battery backup kicks in when the power goes out during Chicago storms.
Wall Vapor Barrier
A heavy-duty membrane goes right on your basement walls. It blocks moisture from seeping through the concrete and keeps the air inside your home dry and clean.
Foundation Crack Sealing
We fill cracks in your walls and floor with epoxy and polyurethane foam. This stops active leaks right away and prevents water from getting in again.
Lifetime Warranty
We stand behind our work with a written lifetime warranty. If water ever comes back through an area we treated, we return and fix it at no extra cost to you.
Clean Worksite, Every Day
We protect your floors, control dust, and clean up at the end of each work day. When the job is done, your basement looks better than when we started.
Why Chicago Homeowners Trust A-Proseal
We are not a franchise or a big chain. A-Proseal is a local, family-run business. Our goal is simple. Fix your water problems for good and treat you right along the way.
Basement Waterproofing Questions Chicago Homeowners Ask
Look for water stains on walls, damp spots on the floor, a musty smell, white powder on the concrete, or mold growing anywhere in the basement. Even small signs of moisture can turn into bigger problems. If you see any of these, call us for a free inspection. We will tell you exactly what is going on and what needs to be done.
Most jobs take between one and three days. A simple crack repair can be finished in a few hours. A full drain tile and sump pump system usually takes two to three days. We work quickly, but we never rush. Your home is treated with care from start to finish.
Both methods work well, but most Chicago homes benefit from interior waterproofing. It is less expensive, causes less disruption to your yard, and works great with the clay soil found around Chicago. Interior drain tile systems and sump pumps handle the water that pushes in from the outside and move it away from your home.
Yes. Mold needs moisture to grow. Once your basement is dry, mold cannot spread. Our waterproofing systems remove the water and lower the humidity. If you already have mold, we suggest having it removed by a specialist first. After that, our system will keep it from coming back.
Yes. Every waterproofing job we do comes with a written lifetime warranty. Our systems are built to protect your home for the long run. If water ever comes back through an area we treated, we return and fix it at no extra cost. We stand behind our work 100%.
Yes. Most of the work happens in the basement, so your daily routine stays the same. Our crew lays down protective coverings, controls dust, and cleans up at the end of every work day. We treat your home like it is our own.
Other Services You Might Need

Interior Drain Tile System
The most effective way to manage water under your basement floor. Pipes along the walls capture water and route it to the sump pump before it reaches your living space.
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Sump Pump Installation
A reliable sump pump is your last line of defense against flooding. We install primary pumps and battery backups so your home stays protected even during power outages.
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Foundation Crack Repair
Cracks in your foundation walls let water in and can get worse over time. We seal them with professional-grade epoxy and polyurethane foam to stop leaks for good.
Learn MoreBasement Waterproofing Across Chicagoland
We serve homeowners throughout the Chicago suburbs. Click your city below to learn about basement waterproofing solutions in your area.