Expert waterproofing and foundation repair backed by lifetime warranties. Competitive pricing. Most jobs completed in just 1–3 days.
See All Areas We Serve →From active job sites to finished basements, get a behind-the-scenes look at how we keep Delaware Valley homes dry. Follow along for waterproofing tips, project updates, and before-and-after transformations.
We seal off your crawl space to create a clean, dry environment, preventing costly damage and improving air quality.
Foundation cracks will let water in and also compromise your home's integrity. Our skilled team specializes in repairing cracks properly and ensuring your foundation remains strong and stable for years to come.
French drain systems are one of the most effective ways to effectively manage water runoff and prevent basement flooding. Our professional installation ensures optimal drainage, protecting your basement from water damage.
Keep your basement dry and secure with our comprehensive waterproofing solutions. We use advanced techniques to prevent water intrusion, safeguarding your home from potential water damage and mold growth.
From minor seepage to major foundation repair, our basement waterproofing contractor team delivers permanent solutions engineered for your home — backed by lifetime warranties.
Our basement waterproofing process is built on real-world experience serving Delaware Valley homeowners — straightforward, transparent, and stress-free. Most projects are completed in just 1–3 days.
We visit your property, inspect the foundation inside and out, identify the exact source of moisture intrusion, and document every finding with photos. You get a detailed report with our honest recommendations — no cost, no pressure, no obligation.
Every home is different. We engineer a waterproofing plan tailored to your property's specific soil conditions, foundation type, water table, and grading. You'll receive a clear proposal with upfront pricing — not a one-size-fits-all upsell from a franchise playbook.
Our trained crews execute the plan with precision, using commercial-grade pipe-and-stone French drain systems — the industry gold standard — not inferior box trench systems used by franchise competitors. We stay on your project until it's done. No bouncing between jobs.
Your investment is backed by our lifetime warranty and our reputation. We stand behind every project because we know the work will last — and we are right here in the Delaware Valley if you ever need us. If the system fails, we come back and fix it.
Del-Val Basement Waterproofing is not a franchise and not a national chain sending strangers to your doorstep. We are a locally owned waterproofing company serving the Delaware Valley — including Montgomery, Chester, Bucks, and Delaware Counties and the entire Greater Philadelphia region. We focus exclusively on foundation and water problems — that's all we do, and we do it right.
Unlike big national competitors, we offer competitive pricing without cutting corners, and we back most waterproofing systems with a lifetime warranty. When we put our name on a project in Norristown, King of Prussia, West Chester, Lansdale, or Collegeville, our reputation is on the line. We answer our phones. We show up when we say we will. And we don't disappear after the check clears.
Based in the Delaware Valley, our team serves homeowners across 8 counties and 40+ towns throughout southeastern Pennsylvania. Click any town to see it on the map.
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We'll tell you what's actually wrong—not what makes us the most money. If you need a partial fix, we'll say so.
The price we quote is the price you pay. No surprise charges when the crew shows up or the invoice arrives.
Our installers are trained, experienced, and know Montgomery County and Chester County basements—they're not subcontractors learning on your home.
We treat your home like ours. Crews clean up daily, protect your property, and leave things better than we found them.
A lifetime transferable warranty isn't marketing—it's a promise. If something fails, we fix it. If you sell, the warranty goes with the house.
We're based in Plymouth Meeting and we've been here for years. You're not calling a 1-800 number—you're calling neighbors.
