Hear from Our Customers
You stop worrying every time it rains. That’s the real outcome here.
Your basement stays dry during spring storms, summer downpours, and winter thaw cycles. The musty smell disappears. You can actually use that space again without wondering if your stuff will get soaked.
If you’ve dealt with water in your basement before, you know the drill. You move things off the floor. You check the forecast obsessively. You hope this storm isn’t the one that floods everything.
That ends when the waterproofing is done right. You get peace of mind, a healthier home, and a foundation that’s protected long-term. Your property value stays intact instead of dropping because of moisture issues.
Del Val Basement Waterproofing is family-owned, and we’ve spent over 15 years fixing basement water problems across Chester County. We’re not the biggest company you’ll find, but that’s the point.
We work directly with people who know Coatesville’s soil conditions, the clay-heavy ground that holds water, and the freeze-thaw cycles that crack foundations every winter. We’ve seen what works here and what doesn’t.
We back our work with a lifetime transferable warranty. That means if you sell your house, the warranty goes with it. Structural engineers recommend our systems, and we’ve installed thousands of them across the area.
First, we come out and do a free estimate. We inspect your basement, check for cracks, look at how water’s getting in, and figure out what’s causing it. We don’t upsell you on stuff you don’t need.
Then we explain your options. Interior waterproofing is more budget-friendly and involves installing drainage systems inside your basement. Exterior waterproofing is more thorough—we dig around your foundation, install a waterproof membrane, and set up better drainage.
Most jobs use our Sub Floor Pressure Relief System. It’s a proven alternative to old French drains that fail over time. We install it, test it, and make sure water gets routed away from your foundation before it ever becomes a problem.
You can stay in your house during the work. There’s some noise and dust, but it’s not invasive. Once we’re done, you’ll notice the difference immediately—especially after the first big rain.
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We handle basement wall waterproofing, foundation crack repair, sump pump installation, and full drainage system setup. If water’s getting into your basement, we fix it at the source.
Coatesville sits in an area with naturally high water tables and clay-heavy soil. That combination means groundwater constantly pushes against your foundation. Add in the freeze-thaw cycles we get every winter, and you’ve got cracks forming in older foundations that weren’t built with modern waterproofing.
We account for all of that. Our systems are designed specifically for Pennsylvania’s climate and soil conditions. That’s why they last decades without needing maintenance.
You also get our lifetime transferable warranty on the work. If something goes wrong, we come back and fix it. If you sell your home, the new owner gets the same protection.
It depends on what’s causing the water problem and how we need to fix it. Interior waterproofing with a drainage system typically costs less than exterior waterproofing, which involves excavation and membrane installation.
During your free estimate, we’ll give you an exact price based on your specific situation. We don’t do ballpark numbers or surprise charges later. You’ll know what it costs before we start.
Most homeowners in Coatesville spend between a few thousand and mid-five figures depending on the scope. That might sound like a lot, but compare it to the cost of foundation repairs, mold remediation, or losing 25% of your home’s value because of water damage. Waterproofing is the cheaper option long-term.
When it’s done right, basement waterproofing lasts for decades. Our interior drainage systems can last 20-30 years or more without maintenance. Exterior waterproofing with quality materials lasts just as long, sometimes longer.
The key is doing it correctly the first time. A lot of homeowners in Coatesville have had their basements “waterproofed” before, but the company cut corners or used outdated methods. That’s why we use a Sub Floor Pressure Relief System that structural engineers recommend.
We also back everything with a lifetime transferable warranty. If something fails, we fix it. That’s how confident we are in the durability of our work.
Yes. Basement waterproofing isn’t invasive enough to force you out of your home. You’ll hear some noise, and there will be dust, but you can go about your daily routine.
If we’re doing exterior waterproofing, we’ll be digging around your foundation outside. That means equipment in your yard and some disruption to landscaping, but nothing inside your house changes. Interior waterproofing happens in the basement, so the rest of your home isn’t affected.
Most jobs take a few days to a week depending on the scope. We work efficiently, clean up after ourselves, and make sure you’re not dealing with a construction zone any longer than necessary.
That’s usually groundwater pressure, not rainwater. Coatesville sits in an area with high water tables, which means groundwater is constantly sitting just below the surface, pushing against your foundation.
Clay-heavy soil makes it worse. Clay doesn’t drain well, so water gets trapped around your foundation even during dry weather. Over time, that pressure finds cracks or weak points in your basement walls and seeps through.
This is why interior drainage systems and exterior waterproofing membranes work so well here. They relieve that pressure and redirect groundwater before it ever reaches your basement walls. Once that’s handled, the leaks stop—rain or no rain.
Interior waterproofing involves installing drainage systems inside your basement to collect water and pump it out before it floods your space. It’s less expensive and less invasive because we’re not digging around your foundation.
Exterior waterproofing is more thorough. We excavate around your foundation, apply a waterproof membrane to your basement walls, and install drainage systems outside to redirect water away from your home. It costs more and takes longer, but it stops water at the source.
Which one you need depends on your specific situation. Some homes only need interior work. Others need both. During your free estimate, we’ll walk you through what makes sense for your basement and your budget.
Yes, if the smell is caused by moisture. That musty odor comes from mold, mildew, and dampness in your basement. Once we stop water from getting in, the humidity drops, and the smell goes away.
Customers tell us all the time that their basement smells completely different after we’re done. One homeowner said it “doesn’t have that musty smell anymore, and the basement just smells like new, clean insulation.”
If the mold growth is severe, you might need separate remediation. But in most cases, fixing the water problem fixes the smell. Your basement becomes a space you can actually use instead of avoiding.
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