Hear from Our Customers
You stop worrying every time it rains. You stop smelling that damp basement air that creeps upstairs. You stop watching cracks in your foundation get wider and wondering when the real damage starts.
A waterproofed basement means your heating bills drop because wet insulation stops stealing your money. It means you can actually use that space without moving boxes off the floor every spring. It means your home value holds—or climbs—instead of tanking when a buyer’s inspector finds moisture problems.
Most importantly, it means you’re done dealing with this. The water stops coming in. The mold stops growing. The stress stops building. You get your basement back, and you get peace of mind that lasts as long as you own the home.
Del Val Basement Waterproofing is a family-run waterproofing company serving Easttown, PA and the surrounding Delaware Valley. We’ve spent over 15 years solving water problems in homes just like yours—older properties with stone foundations, clay-heavy soil, and all the moisture issues that come with Pennsylvania weather.
We’re not a national franchise pushing one-size-fits-all systems. We’re local. We know how Easttown’s soil behaves when it gets saturated. We know what happens to basements here during freeze-thaw cycles. We know which solutions actually work long-term and which ones fail in three years.
Every job we complete comes with a lifetime transferable warranty. That’s not marketing talk—that’s us standing behind our work because we plan to be here when you sell your home, and we want the next owner to know your basement is protected.
First, we inspect your basement for free. We’re looking at where water enters, what’s causing it, and what’s happening to your foundation. We check for hydrostatic pressure, foundation cracks, poor drainage, and signs of previous water damage. This takes about an hour, and you get a written estimate before we leave.
If you move forward, we start by addressing the source. For most Easttown homes, that means installing our Sub Floor Pressure Relief System—a modern alternative to French drains that actually handles the clay-heavy soil around here. We’re redirecting water before it builds pressure against your foundation. If you’ve got cracks, we seal them properly. If your exterior needs membrane work, we handle that too.
Interior waterproofing includes sealants and drainage systems that catch any water that does make it through. Exterior waterproofing is more thorough—we excavate, apply waterproof membranes, and fix drainage issues at the source. Which approach you need depends on your home’s specifics, and we’ll walk you through exactly why we’re recommending what we recommend.
You can stay in your house during the work. Most jobs take a few days. When we’re done, we clean up, test the system, and walk you through your warranty. Then you wait for the next rainstorm and watch your basement stay dry.
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You’re getting a waterproofing contractor who shows up on time, explains what’s wrong in plain language, and doesn’t upsell you on systems you don’t need. You’re getting 15+ years of experience solving basement moisture problems in Easttown, PA and throughout Chester County.
You’re getting a customized solution. We don’t install the same system in every basement because every basement is different. Your home’s age, foundation type, soil conditions, and water entry points determine what actually works. We design systems based on what your specific property needs—not what’s easiest for us to install.
You’re getting a lifetime transferable warranty that covers our workmanship and materials. If something fails, we come back and fix it. If you sell your home, the warranty transfers to the next owner. That’s valuable when buyers are comparing your home to others on the market.
You’re also getting a company that understands Easttown’s specific challenges. The clay-heavy soil here holds water and creates hydrostatic pressure against foundations. Older homes in this area often have stone or brick foundations that are more porous than modern poured concrete. We account for these factors when we design your waterproofing system, which is why our solutions last decades instead of years.
Most basement waterproofing projects in Easttown run between $3,000 and $10,000, depending on your home’s size, foundation condition, and which waterproofing method you need. Interior waterproofing with sealants and drainage systems sits on the lower end. Exterior waterproofing with excavation and membrane installation costs more but addresses problems at the source.
Your specific cost depends on factors like how much linear footage we’re waterproofing, whether you need foundation crack repairs, if there’s existing damage we need to address first, and whether we’re working on interior systems, exterior systems, or both. Homes with stone foundations sometimes need more extensive work than newer homes with poured concrete.
We give you a free estimate after inspecting your basement. You’ll get a written breakdown of what we’re doing and why, so you can see exactly where your money goes. No surprises, no hidden fees—just a clear price for the work your home actually needs.
Properly installed waterproofing systems last for decades—often the life of your home. Our Sub Floor Pressure Relief Systems and interior drainage solutions are designed to function for 20-30+ years without major maintenance. Exterior waterproofing membranes typically last 25-40 years when installed correctly.
That longevity depends on quality installation and using the right system for your specific situation. Cheap solutions or improper installation can fail in just a few years, which is why you see homes with multiple failed waterproofing attempts. We’ve repaired plenty of systems that were installed wrong the first time.
Our lifetime transferable warranty backs up that durability. We’re not offering that warranty because we expect to come back and redo work—we’re offering it because we know our systems hold up. Most of our service calls are for new customers, not repairs on existing installations. When you invest in waterproofing done right the first time, you’re done dealing with water problems.
Interior waterproofing manages water after it enters your foundation. We install drainage systems, sump pumps, and sealants inside your basement to collect water and redirect it away from your living space. This approach costs less and works well for homes with minor water intrusion or where exterior access is difficult.
Exterior waterproofing stops water before it reaches your foundation. We excavate around your home’s perimeter, apply waterproof membranes directly to foundation walls, repair any cracks or damage, and install proper drainage systems. This method addresses the root cause and provides more comprehensive protection, but it’s more invasive and costs more upfront.
Which approach you need depends on your specific situation. Homes in Easttown with clay-heavy soil and hydrostatic pressure often benefit from exterior waterproofing because it stops pressure from building against your foundation. Homes with minor seepage might only need interior solutions. During your free inspection, we’ll explain which method makes sense for your home and why—and we’ll be honest if you don’t need the more expensive option.
You can handle minor moisture issues yourself—applying sealant to small cracks, improving gutters and downspouts, or adding a dehumidifier. But actual waterproofing that stops recurring water intrusion requires professional equipment, expertise, and warranties you can’t get from DIY solutions.
The problem with DIY waterproofing is that most homeowners treat symptoms instead of causes. You might seal a crack, but if hydrostatic pressure is pushing water through your foundation, that water will just find a new entry point. You might install a sump pump, but without proper drainage systems, you’re just moving water around instead of solving the problem.
Professional waterproofing companies like us bring structural knowledge, specialized equipment, and proven systems that actually address why water enters your basement. We identify pressure points, drainage failures, and foundation issues that aren’t obvious to homeowners. More importantly, our work comes with a lifetime warranty. If you DIY and it fails, you’re starting over from scratch—and probably spending more in the long run than if you’d hired professionals initially.
You need help now if you’re seeing active water entry—puddles after rain, water seeping through cracks, or moisture climbing your foundation walls. You also need immediate attention if you’re smelling mold, seeing white chalky deposits on your concrete (efflorescence), or noticing your basement feels humid even when it hasn’t rained recently.
Don’t wait if you’re seeing horizontal cracks in your foundation walls or if existing cracks are getting wider. These indicate structural stress, often from hydrostatic pressure, and they get worse over time. The longer you wait, the more expensive repairs become—and the more damage water does to your home’s structure and your family’s health.
Even if you’re not seeing active flooding, persistent dampness creates mold growth that affects your respiratory health. Wet insulation drives up energy costs. Water damage decreases your home value significantly. The best time to waterproof your basement is before major damage happens, but the second-best time is right now. Call us for a free inspection, and we’ll tell you honestly whether you need immediate repairs or if you can plan the work for later.
We’re a family-owned waterproofing company that’s been solving basement water problems in Easttown and Chester County since 2007. You’re not getting a national franchise with rotating crews—you’re getting local experts who understand Pennsylvania soil, weather, and the specific foundation challenges in older Easttown homes.
We back every job with a lifetime transferable warranty. That warranty matters when you sell your home because it shows buyers your basement is protected long-term. Most waterproofing companies offer limited warranties or warranties that don’t transfer. Ours does, because we plan to be here for decades and we stand behind our work.
You also get honest recommendations. We’re not pushing the most expensive system on every homeowner. If your basement only needs interior waterproofing, we’ll tell you that—even though exterior work would make us more money. We’ve built our reputation on transparency, quality work, and treating customers the way we’d want to be treated. That’s why homeowners throughout Easttown trust us to protect their biggest investment.
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