Hear from Our Customers
You stop checking the weather forecast with that sinking feeling in your gut. Rain becomes just rain again, not a threat to your basement, your belongings, or your foundation.
The water that used to pool around your foundation gets redirected before it ever becomes a problem. Your sump pump stops running constantly because there’s less water pressure pushing against your basement walls. The musty smell starts to fade within days as moisture levels drop.
Your basement becomes usable space again—not just a place you avoid or stress about. You’re not mopping up water or moving boxes to higher shelves before every storm. The constant low-level anxiety about what you’ll find when you go downstairs after heavy rain? Gone.
This is what happens when you install a drainage system that actually works for East Norriton’s clay-heavy soil and unpredictable Pennsylvania weather. The water gets managed before it becomes your problem.
Del Val Basement Waterproofing is a family-run operation that’s spent over 15 years solving water problems in Montgomery County homes. We’re not the biggest waterproofing company in Pennsylvania, but that’s exactly why homeowners in East Norriton call us.
You get the expertise of a company that’s seen every type of basement water issue this area throws at us—from spring flooding to summer downpours—without the inflated pricing or pushy sales tactics that come with the big corporate operations. We know East Norriton’s older homes, the soil composition, and exactly why traditional solutions fail here.
Every french drain system we install comes with a lifetime transferable warranty. That’s not marketing talk—it’s how confident we are that our work holds up.
We start with an inspection of your basement to identify where water’s entering and why. This isn’t a 10-minute walkthrough—we’re looking at your foundation, grading, soil type, and existing drainage to design a system that actually solves your specific problem.
Once we’ve mapped out the plan, we install the drainage system along the interior perimeter of your basement floor. We’re working in what’s called the “clear water zone”—above your footing where the system won’t clog with mud and debris like exterior french drains do. This is a sub-floor pressure relief system that catches water before it ever makes it into your basement.
The water gets channeled to a sump pump system that removes it from your property completely. Most installations take 1-2 days depending on your basement size. You’ll hear some noise and see some dust, but you can stay in your home the entire time.
The real test comes during the next rainfall. That’s when you’ll see the system working—water that used to flood your basement gets intercepted and pumped out before you ever see it.
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You’re getting a complete sub-floor drainage system engineered specifically for Pennsylvania’s weather patterns and East Norriton’s soil conditions. This includes the perimeter drain installation, a professional-grade sump pump system, and all the waterproofing components needed to keep your basement dry year-round.
We’re not installing the old-style exterior french drains that clog with clay and silt. The interior system we use stays cleaner, works more reliably, and costs less to install because we’re not excavating your entire yard. It’s also easier to service if you ever need maintenance—though with proper installation, that’s rare.
East Norriton gets anywhere from 35 to 54 inches of precipitation annually, and your drainage system needs to handle everything from slow spring melts to sudden summer thunderstorms. The system we install is designed for that variability. It manages hydrostatic pressure—the force of water pushing against your foundation—which is what causes most basement flooding in this area.
You also get our lifetime transferable warranty in writing. If you sell your home, that warranty goes with it, which is a real selling point when buyers see “professionally waterproofed basement” on the inspection report.
Most residential french drain installations in East Norriton run between $5,000 and $6,000 for a typical basement perimeter of around 100 linear feet. That’s the honest middle-ground price for professional installation with quality materials and a real warranty.
You’ll see cheaper quotes, usually from contractors who are cutting corners on materials or installation depth. You’ll also see quotes that are double this amount from the big corporate waterproofing companies with massive advertising budgets. We’re neither of those.
The actual cost depends on your basement size, how much drainage needs to be installed, and whether your sump pump system needs upgrading. We give you a clear quote after the inspection—no surprises, no pressure to decide on the spot. The investment protects your home from water damage that costs an average of $1,600 to $6,900 to repair each time it happens, so the math makes sense pretty quickly.
A properly installed interior french drain system lasts decades—often 20 to 30 years or more—because it’s not exposed to the elements and clogging issues that destroy exterior drains. That’s why we back ours with a lifetime warranty.
The key difference is where the system sits. Exterior french drains in East Norriton fail within 5-10 years because Pennsylvania’s clay-heavy soil clogs the pipes. Water can’t flow through clay and silt the way it flows through gravel, so the system stops working. Then you’re paying to dig it all up and start over.
Interior systems avoid that problem entirely. They’re installed in the clear water zone above your footing, where they catch water before it mixes with soil. The pipes stay cleaner, the system keeps working, and you’re not dealing with constant maintenance. Your sump pump will need occasional service—that’s normal wear and tear on a mechanical component—but the drainage system itself is built to last as long as your house does.
Interior french drain installation happens entirely inside your basement, so your yard stays untouched. We’re not digging trenches around your foundation or tearing up landscaping—that’s the old way of doing things, and it’s unnecessarily disruptive.
Inside your basement, yes, there’s work involved. We’re cutting a channel along the perimeter of your floor, installing the drainage system, and then sealing everything back up. You’ll have noise and dust for a day or two, but it’s manageable. Most homeowners stay in their house during installation without major disruption.
The floor gets restored after the system goes in. You’re left with a clean channel along the perimeter where the drain sits, and the concrete gets patched. It’s not invisible, but it’s not an eyesore either. What matters is that your basement stays dry, and you didn’t have to destroy your yard or wait weeks for exterior excavation work to get that result.
We install a sub-floor pressure relief system instead of traditional french drains that fail in Pennsylvania soil. It’s a more reliable approach that solves the actual problem—hydrostatic pressure—instead of just reacting to water after it’s already flooding your basement.
Most companies in this area are still installing exterior drains or outdated interior systems that clog easily. We’ve seen those systems fail, which is why homeowners call us after they’ve already paid someone else to “fix” their water problem. Our approach catches water before it becomes a problem, channels it efficiently, and uses components that hold up to the volume of water East Norriton properties deal with.
You also get transparent pricing, a written lifetime warranty, and a family-run company that answers the phone when you call. We’re not running high-pressure sales appointments or disappearing after installation. We’ve been doing this in Montgomery County since 2007, and our reputation depends on your basement actually staying dry—not just selling you a system and moving on.
Yes, but only if it actually stops water from entering your basement in the first place. A french drain system that’s working correctly eliminates the moisture source that causes mold growth, and you’ll usually see humidity levels drop within days of installation.
Mold needs consistent moisture to grow. If your basement floods even occasionally, or if you have persistent dampness and that musty smell, you’ve got the conditions mold loves. Installing a drainage system that prevents basement water intrusion removes that moisture source. The air gets drier, the walls stop sweating, and mold stops having the environment it needs to spread.
That said, if you already have mold growth, the drainage system won’t remove it—you’ll need to address the existing mold separately. But once the system is in and your basement is staying dry, new mold growth stops being a recurring problem. You’re not just treating the symptom anymore; you’re eliminating the cause. That’s especially important in East Norriton where older homes and clay soil create perfect conditions for basement moisture issues.
You need professional installation if you want a system that actually works long-term. DIY french drain projects fail in Pennsylvania because most homeowners don’t account for soil type, proper grading, hydrostatic pressure, or how to integrate the drainage with a sump pump system that can handle our weather.
The internet makes it look simple—dig a trench, lay some pipe, cover it with gravel. But that approach doesn’t solve basement flooding in East Norriton’s clay soil. The water doesn’t drain through clay the way it drains through sand or loam, so your DIY exterior drain clogs within a year or two. Then you’ve spent money and time on something that doesn’t work, and you’re back to square one.
Professional installation means the system is designed for your specific property, installed at the right depth and grade, and connected to a sump pump that’s properly sized for the water volume you’re dealing with. It also means you get a warranty. If something goes wrong, we fix it. With DIY, you’re on your own. For something as important as protecting your home’s foundation and preventing thousands in water damage, that’s not a risk worth taking.
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