If you’re a homeowner in or around Will County, chances are you’ve dealt with a damp or musty basement—or you’re worried you might soon. Maybe you’ve seen water stains on the wall, noticed a strange smell, or found water pooling after a heavy rain. And you’re probably asking yourself the same question we hear every day: “How much is this going to cost me?”
It’s a fair question—and an important one. No one wants to be caught off guard by surprise repair bills. At Allied Waterproofing & Septic, we understand how frustrating it can feel to face a home repair project with no clear price tag. Our goal isn’t just to fix basements—it’s to help people like you plan ahead with confidence.
Water in basements around Will County isn’t always about big problems. Sometimes it’s just aging concrete, poor grading outside, clogged gutters, or heavy Midwest storms finding their way in. In other cases, it might be cracks in the foundation or hydrostatic pressure building up underground.
Whatever the cause, it all leads to the same outcome: moisture that doesn’t belong—and damage that gets worse over time.
Not sure if you need waterproofing yet? Here are a few red flags:
Damp walls or floors
White chalky stains (efflorescence)
Mold or mildew smell
Pooled water after rain
Cracks in walls or floors
Rusty appliances or tools stored in the basement
A sump pump that’s constantly running
If you’re seeing more than one of these, it’s probably time to act—before the problem grows more expensive.
Let’s get to the heart of it: The average cost of basement waterproofing near Will County ranges between $2,000 and $10,000. But depending on the size of the basement and the type of system you need, that range can go even higher.
Here’s a quick snapshot:
Note: These are general ranges. Every home is different, and the final cost depends on your specific needs.
Several things play into the final price tag, including:
Size of your basement
Extent of water damage
Type of soil and foundation
Access to the basement walls (interior vs. exterior)
Labor and material costs in Will County
Whether you need a sump pump, drain tile, or both
At Allied, we always start with an honest, no-pressure evaluation. Our job isn’t to sell you the biggest fix—it’s to recommend what’s actually needed for your home.
In general, interior waterproofing is more affordable because the work is done from inside the home and doesn’t require digging up your yard. It’s good for managing existing moisture, especially in finished basements.
Exterior waterproofing, on the other hand, is more thorough. It’s a longer-term solution that prevents water from getting in to begin with. But it’s more expensive, partly because it involves excavation and foundation exposure.
Here’s a simple comparison:
If you’re handy, you’ve probably wondered, “Can I just seal the walls myself?”
And the answer is: maybe—but only for very minor issues. Store-bought sealants might help with small cosmetic leaks or condensation. But they don’t address water pressure or deeper issues. In fact, quick DIY jobs can sometimes hide warning signs that lead to bigger damage later.
Bottom line: it might save you money now, but it could cost you more in repairs later if the root problem isn’t fixed.
Nobody likes being hit with unexpected charges. Here’s how to keep your budget under control:
Get a detailed quote up front—make sure labor, materials, and cleanup are all included.
Ask about optional vs. required fixes—some things can wait, others can’t.
Check for hidden fees—like permit costs or equipment rental.
Don’t ignore small problems—they get more expensive the longer you wait.
At Allied, we make this part clear before any work starts—because surprises belong at birthday parties, not on your invoice.
Choosing the cheapest bid can be tempting—but that doesn’t always mean the best value.
Here’s what to look for:
Local experience—someone who knows Will County’s soil, weather, and building styles.
Licensed and insured—always check.
Clear communication—you should never feel confused about what you’re paying for.
Tailored solutions—not one-size-fits-all pricing.
We’re a smaller team at Allied Waterproofing & Septic, but that’s part of why we’re flexible. We actually listen, and we know how to work within a budget.
Basements in Will County face different issues than homes in other parts of Illinois. Clay-heavy soils, high water tables, and changing freeze-thaw cycles can all affect how water enters a home—and how we stop it.
Because we live and work here, we understand what to expect from each season. Whether your home is in Joliet, Frankfort, Plainfield, or somewhere rural, we’ve probably seen a similar issue before—and fixed it.
So—how much should you budget for basement waterproofing near Will County, Illinois? The real answer is: it depends. But now, you’ve got a solid range, a few smart tips, and a better sense of what affects the price.
What matters most is catching issues early, getting an honest assessment, and working with a contractor who cares about doing it right—not just doing it fast.
At Allied Waterproofing & Septic, we’re here to help you plan wisely, spend smartly, and keep your home dry for the long haul.
Allied Water Services Announces Strategic Partnership with Norweco to Supply High-Quality Septic Tanks to Industry Professionals
- Business Wire
February 04, 2025
MANTENO, Ill.--(BUSINESS WIRE)--Allied Water Service, a leader in septic, sewer & waterproofing solutions, is proud to announce an exclusive partnership with Norweco, a globally recognized manufacturer of advanced wastewater treatment systems.
Read More
Allied Water Services Announces Strategic Partnership with Norweco to Supply High-Quality Septic Tanks to Industry Professionals
- Yahoo Finance
February 05, 2025
MANTENO, Ill. Allied Water Service, a leader in septic, sewer & waterproofing solutions, is proud to announce an exclusive partnership with Norweco, a globally recognized manufacturer of advanced wastewater treatment systems.
Read More
Allied Water Services Announces Strategic Partnership with Norweco to Supply High-Quality Septic Tanks to Industry Professionals
- Yahoo Finance
February 04, 2025
MANTENO, Ill.--(BUSINESS WIRE)--Allied Water Service, a leader in septic, sewer & waterproofing solutions, is proud to announce an exclusive partnership with Norweco, a globally recognized manufacturer of advanced wastewater treatment systems.
Read More
Allied Water Services Announces Strategic Partnership with Norweco to Supply High-Quality Septic Tanks to Industry Professionals
February 04, 2025
MANTENO, Ill.--(BUSINESS WIRE)--Allied Water Service, a leader in septic, sewer & waterproofing solutions, is proud to announce an exclusive partnership with Norweco, a globally recognized manufacturer of advanced wastewater treatment systems.
Read More
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