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You know that feeling when you check the basement after a heavy rain and see water pooling near the foundation? That stops.
When we waterproof your basement, you’re not just getting a temporary patch. You’re getting a system designed to handle the root cause—whether that’s hydrostatic pressure pushing water through your foundation, cracks letting moisture seep in, or poor drainage around your home. The air smells better. Your belongings stay safe. Your energy bills drop because wet insulation isn’t forcing your HVAC to work overtime.
And if you’re thinking about selling down the road, you’ll have documentation and a transferable warranty that shows the next buyer this house was taken care of. No awkward conversations during inspection. No last-minute negotiations because of water stains.
You get peace of mind. That’s what a dry basement actually gives you.
Del Val Basement Waterproofing is a family-run company based in Plymouth Meeting, serving Montgomery County and the surrounding areas for over 15 years. We’re not a national franchise that sends different crews every time. You’ll work with people who know Lower Pottsgrove’s soil conditions, understand how the Schuylkill River affects water tables in this area, and have seen what happens to older foundations during freeze-thaw cycles.
We built our reputation by doing the work right the first time and standing behind it with a lifetime transferable warranty. Structural engineers recommend our sub-floor pressure relief systems because they work better than outdated French drains. You’ll find us on HomeAdvisor with verified reviews from homeowners who had the same problems you’re dealing with now.
We’re local. We’re experienced. And we’re not going anywhere.
First, we come out and actually look at your basement. Not a sales pitch—a real assessment. We figure out where the water’s coming from, why it’s getting in, and what’s going to stop it for good.
Then we give you options. Interior systems are more budget-friendly and work well for most homes. We install drainage systems and sealants inside your basement to capture water before it becomes a problem. Exterior waterproofing is more thorough—we excavate around your foundation, apply waterproof membranes, and install proper drainage. Sometimes you need both. We’ll tell you what makes sense for your situation.
During installation, you can stay in your home. It’s not as disruptive as you’d think. We protect your property, do the work, and clean up when we’re done. Most jobs take a few days depending on the scope.
After we’re finished, you’ll have a system that’s designed to last as long as you own the house. And if something ever does go wrong, our lifetime warranty covers it. You’ll get documentation, maintenance tips, and a contact number that actually gets answered.
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Every waterproofing job is different, but here’s what most Lower Pottsgrove homeowners need: a sub-floor pressure relief system that handles hydrostatic pressure better than old-school French drains, foundation crack repair using modern materials that actually seal, and sump pump installation or replacement if your current one isn’t keeping up.
If you’ve got mold or mildew from ongoing moisture problems, we handle remediation so you’re not breathing that in. Crawl space encapsulation is another big one—especially in older homes where moisture creeps up from below and makes everything damp.
Lower Pottsgrove sits in an area where spring snowmelt and summer storms can dump a lot of water in a short time. Your soil type matters too. Clay-heavy soil doesn’t drain well, which means water sits against your foundation longer. We account for that when we design your system.
You’ll also get a free estimate up front. No surprises, no hidden fees. We spell out exactly what you’re paying for and why it’s necessary. And because we’re local, we know what the building codes require and make sure everything’s compliant.
Most homeowners in Lower Pottsgrove spend between $3,000 and $10,000 depending on the size of the basement, the severity of the water problem, and whether you need interior or exterior waterproofing. Interior systems tend to be less expensive because there’s no excavation involved. Exterior waterproofing costs more but addresses the problem from the outside, which is sometimes necessary for older foundations or severe water intrusion.
The price also depends on what’s causing the issue. If you’ve got foundation cracks that need sealing, that’s one cost. If you need a full perimeter drain system, sump pump, and exterior membrane, that’s another. We give you a detailed estimate after we assess your specific situation.
What you’re really paying for is a permanent fix, not a band-aid. Cheaper solutions might seem appealing, but if they don’t address the root cause, you’ll be calling someone else in a few years to redo the work.
Yes. Most waterproofing work is non-invasive enough that you can stay home the entire time. If we’re doing interior work, we’ll be in your basement, but it won’t disrupt your daily routine upstairs. You’ll hear some noise—jackhammering if we’re installing a drainage system, equipment running—but it’s manageable.
Exterior waterproofing involves digging around your foundation, so you’ll see equipment in your yard and workers outside. But again, you don’t need to leave. We protect your landscaping as much as possible and clean up when we’re done.
The whole process usually takes a few days to a week depending on the scope. We’ll give you a timeline up front so you know what to expect. If there’s ever a reason you’d need to make accommodations, we’ll let you know ahead of time.
Hydrostatic pressure is the main culprit. When the soil around your foundation gets saturated from rain or snowmelt, it creates pressure that pushes water through cracks, joints, and porous concrete. Lower Pottsgrove gets heavy rainfall in spring and summer, plus snowmelt in late winter, which means your foundation is dealing with a lot of water.
Poor drainage is another big issue. If your gutters aren’t directing water away from your house, or if the grading around your foundation slopes toward your home instead of away, water pools against your basement walls. Over time, it finds a way in.
Foundation cracks happen as houses settle. Even small cracks can let in a surprising amount of water, especially during heavy storms. And if you’ve got an older home with a stone foundation, water intrusion is even more common because those foundations weren’t built with modern waterproofing methods.
A properly installed waterproofing system should last as long as you own your home. Interior drainage systems, sump pumps, and sealants are designed for decades of use with minimal maintenance. Exterior waterproofing membranes and drainage systems are even more durable because they’re built to withstand constant exposure to soil and moisture.
That said, sump pumps do need occasional maintenance. You should test yours a few times a year to make sure it’s working, and the pump itself might need replacement after 10-15 years depending on how often it runs. But the actual waterproofing infrastructure—the drains, the membranes, the sealed cracks—those are permanent fixes.
We back our work with a lifetime transferable warranty, which means if you sell your house, the warranty goes with it. That’s not something you get with temporary solutions or DIY fixes. It’s a long-term investment in your home’s structural integrity and your own peace of mind.
Absolutely. Mold grows in damp, dark environments, and a wet basement is the perfect breeding ground. Once you eliminate the moisture source, mold can’t thrive. You’ll notice the musty smell disappears within a few weeks after waterproofing because the air isn’t constantly humid.
If you already have mold growth, we can handle remediation as part of the waterproofing process. That means removing contaminated materials, treating affected areas, and making sure spores don’t spread to other parts of your home. Then we install the waterproofing system so moisture doesn’t come back.
Mold isn’t just unpleasant—it’s a health hazard. It aggravates allergies, triggers asthma, and can cause respiratory issues, especially in kids and older adults. Getting rid of the moisture problem is the only way to get rid of the mold problem for good. Temporary fixes like dehumidifiers or surface cleaners don’t address the root cause.
Yes. Pennsylvania law requires sellers to complete a Property Disclosure Statement, and you have to be upfront about any known water problems. That includes past or present leaks, moisture issues, and any repairs you’ve made. If you don’t disclose and the buyer finds out later, you could face legal consequences.
Here’s the good news: if you’ve had your basement professionally waterproofed, that’s actually a selling point. You can show documentation of the work, explain what was done, and provide the transferable warranty. Buyers appreciate knowing the problem was handled by professionals and won’t come back.
Homes with undisclosed water damage are a red flag during inspections. Buyers either walk away or demand a price reduction to cover future repairs. If you waterproof your basement before listing, you avoid that entire conversation and potentially sell faster at a better price.
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