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You’re not just sealing cracks. You’re controlling where water goes before it ever touches your foundation walls.
That means no more damp corners in your finished basement. No more white powder creeping up from the floor. No more wondering if the next storm is going to leave you with two inches of water and a cleanup bill you weren’t planning for.
When foundation waterproofing is done right, you stop reacting to water problems and start preventing them. Your basement stays dry. Your air stays breathable. Your foundation stays structurally sound. And you stop losing sleep every time the forecast calls for heavy rain.
Del Val Basement Waterproofing is a family-run company based in Plymouth Meeting, serving Montgomery County homeowners who need real solutions—not sales pitches.
We’ve spent over 15 years installing foundation waterproofing systems across Blue Bell, PA and the surrounding areas. We know what happens to older homes in this region when freeze-thaw cycles crack foundations and spring storms overwhelm drainage systems that weren’t built for today’s weather patterns.
We’re not the biggest name in the industry, and we’re fine with that. What we are is local, experienced, and backed by a lifetime transferable warranty on every job we complete.
We start with a free inspection of your property. We’re looking at your foundation walls, grading, drainage, soil conditions, and any visible signs of water intrusion or structural stress.
From there, we recommend either an interior or exterior foundation waterproofing approach—or both, depending on what your home actually needs. Interior systems include sealants and sub-floor pressure relief drainage that redirects water before it enters your basement. Exterior foundation waterproofing involves excavating around your foundation to install a waterproof membrane and upgrade your drainage system at the source.
Once the system is in place, we test it. We walk you through what we did, what to expect, and how the system works. Then we back it with a lifetime warranty that transfers if you sell your home.
You’re not guessing whether it’ll hold up. You’re getting a system that’s been installed thousands of times, recommended by structural engineers, and proven to work in Blue Bell’s specific soil and climate conditions.
Ready to get started?
Foundation waterproofing in Blue Bell, PA isn’t one-size-fits-all. Older homes in Montgomery County face unique challenges—aging stormwater systems, proximity to water bodies, soil that shifts with the seasons, and foundations that were built decades before modern waterproofing standards existed.
That’s why we offer both interior and exterior foundation waterproofing services. Interior systems are more budget-friendly and less invasive—they control water after it’s entered your foundation but before it floods your basement. Exterior foundation waterproofing is more comprehensive. It stops water at the source by creating a barrier around your foundation walls and improving drainage before water pressure builds up.
Both approaches include professional-grade materials, custom drainage solutions, and a thorough assessment of your property’s grading and water flow patterns. When done correctly, exterior foundation waterproofing can last 20 to 30 years or more. Interior systems provide reliable, long-term protection with minimal disruption to your daily routine.
We also handle foundation leak repair and foundation wall waterproofing for homes experiencing active water intrusion, structural cracks, or recurring moisture issues that other companies couldn’t solve.
You’ll see the signs before the damage gets serious. White powder or chalky residue on your foundation walls means water is pushing through and leaving mineral deposits behind. Hairline cracks that weren’t there a year ago are often the result of freeze-thaw cycles—common in Pennsylvania winters—that cause your foundation to expand and contract until it fractures.
Damp corners, musty smells, or mold growth in your basement are all red flags. So is water pooling near your foundation after heavy rain, or basement flooding that only started recently even though you’ve lived in the home for years.
If you’ve had your basement finished and now you’re noticing moisture issues, that’s not a coincidence. The problem was likely there all along—it just wasn’t visible until you created living space down there. The good news is that foundation waterproofing can be done even in finished basements, and in many cases, the disruption is minimal.
Interior foundation waterproofing controls water after it’s entered your foundation but before it floods your basement. We install drainage systems beneath your basement floor that capture water and redirect it to a sump pump or exterior drain. We also apply sealants to your foundation walls to reduce moisture penetration. It’s less expensive, less invasive, and can be completed without major excavation.
Exterior foundation waterproofing stops water before it ever reaches your foundation walls. We excavate around the perimeter of your home, apply a waterproof membrane to the exterior of your foundation, and install or upgrade your drainage system at ground level. This approach addresses the root cause of water intrusion and is the most effective long-term solution.
Which one you need depends on your home’s age, your foundation’s condition, your budget, and how severe your water issues are. In some cases, a combination of both interior and exterior systems provides the best protection. We’ll walk you through the pros and cons of each during your free inspection.
Exterior foundation waterproofing, when installed with quality materials and proper technique, can last 20 to 30 years or longer. That’s because you’re creating a physical barrier between your foundation and the soil, along with drainage improvements that reduce hydrostatic pressure for decades.
Interior systems also provide long-term protection, though their lifespan depends more on maintenance—keeping your sump pump functional, ensuring drainage lines stay clear, and addressing any new cracks that develop over time.
What matters more than the system itself is the installation. Poorly installed waterproofing fails within a few years. Properly installed systems last decades. That’s why we back every foundation waterproofing job with a lifetime transferable warranty. If something goes wrong with our work, we fix it. And if you sell your home, that warranty goes with it—which is a selling point most buyers care about.
Yes. Foundation waterproofing is a non-invasive process that doesn’t usually disrupt your daily routine. If we’re doing interior work, you’ll hear some noise during installation, but you won’t need to leave. Most interior jobs are completed in one to three days depending on the size of your basement and the scope of the work.
Exterior foundation waterproofing involves excavation around your home’s perimeter, which means heavy equipment and some disruption to your landscaping. But you can still live in your house while we work. We’re typically outside, and the interior of your home remains fully functional.
We’ll let you know upfront what to expect based on the specific system we’re installing. Some homeowners prefer to be out of the house during the noisiest parts of the job, but it’s not required. We’ve completed thousands of installations while families went about their normal routines.
Most foundation leaks in Blue Bell, PA come down to three things: water pressure, soil movement, and aging materials. When it rains heavily or snow melts quickly, water saturates the soil around your foundation. That creates hydrostatic pressure—water pushing against your foundation walls with enough force to find any weak point and seep through.
Montgomery County’s clay-heavy soil makes this worse. Clay expands when it’s wet and contracts when it dries, which puts constant stress on your foundation. Over time, that stress causes cracks. Once a crack forms, water has a direct path into your basement.
Older homes face an additional challenge. Many foundations in Blue Bell were built decades ago, before modern waterproofing standards existed. The materials have aged, drainage systems are outdated, and what used to work fine now fails during today’s more intense storms. That’s why homeowners who’ve lived in their homes for 15 or 20 years without issues suddenly find themselves dealing with water intrusion. The foundation didn’t get worse overnight—it finally reached the point where it couldn’t keep up.
Interior foundation waterproofing typically costs less because there’s no excavation involved. You’re looking at drainage system installation, sealant application, and possibly a sump pump—all of which can be completed in a few days with minimal disruption.
Exterior foundation waterproofing costs more because it’s more labor-intensive. We’re excavating around your home, applying a waterproof membrane, upgrading drainage systems, and restoring landscaping. But it’s also the most comprehensive solution, and when done right, it lasts 20 to 30 years or more.
The actual cost depends on your home’s size, your foundation’s condition, how much excavation is required, and whether you need additional drainage improvements like grading corrections or downspout extensions. We provide free estimates after inspecting your property, and we’ll walk you through exactly what you’re paying for and why. We’re not the cheapest option in Blue Bell, and that’s intentional. You’re paying for experience, quality materials, proper installation, and a lifetime warranty that actually means something.
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