How do I prevent my basement from getting wet?

Protecting your basement from water leaks or flooding starts with identifying water intrusion sources and installing a high-quality basement waterproofing system. Your system should be tailored to your home's individual needs and may include waterproofing products such as an interior drainage system and sump pump. Learn more about how you can prevent water in your basement.

How can I make a damp basement dry?

When it comes to keeping your damp basement dry, installing a dependable basement waterproofing system is key. An interior drainage system and sump pump work in tandem to keep water out of the basement and away from your foundation while a dehumidifier keeps the air dry and prevents condensation from forming on walls, ceilings, and windows. Learn more about how to make a damp basement dry.

How do I fix a leaky basement foundation?

There are many foundation waterproofing methods and products available to prevent water intrusion. However, most water problems can't be solved with a single product or treatment. Working with a reputable waterproofing company is the best way to ensure the basement waterproofing systems that best suit your specific needs are installed. Learn more about how to fix a leaky basement foundation.

How do I get rid of mold and musty odors in my basement?

Mold and mildew thrive in dark, moist environments where organic materials are present, such as a basement or crawl space. Fixing water leaks and protecting against future moisture intrusion with a reliable waterproofing system, as well as keeping the air dry with a dehumidifier, prevents mold growth and odors in your basement. Learn more about how to get rid of mold and musty odors in the basement.

How can I warm up a cold basement?

You can make your basement feel more comfortable and reduce your home heating and cooling costs by insulating your basement. There are many different types of basement insulation to choose from, each of which offers different benefits. Learn more about how to warm up a cold basement.

How much will basement waterproofing cost?

The cost of basement waterproofing can vary from home to home. Factors such as the size of the basement, age and location of the home, type of foundation, and more can impact the total cost. Contact Basement Systems to request a free, no-obligation waterproofing estimate and learn more about financing opportunities in your area. Learn more about basement waterproofing costs.

Basement Waterproofing & Crawl Space Repair Company in Montgomery, Prince Georges, MD & Loudon, Fairfax, VA: NV Waterproofing

Got a wet basement? Musty odors? Protect your home with our proven solutions & lifetime warranty.

A dry, healthy home starts here.
Contact your local dealer or call 1-800-638-7048

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Home»Basement Waterproofing»Virginia»NV Waterproofing & Foundation Repair

NV Waterproofing has been ensuring healthy basements since 1986. Homeowners in Northern Virginia, Suburban Maryland, and the Greater D.C. area have benefited from their expert basement waterproofing, crawl space encapsulation, and foundation repair for over 30 years.

Locally owned and operated, NV Waterproofing is the authorized Basement Systems contractor for Greater Washington D.C. and Northern Virginia. Customers gain exclusive access to the following:

Award-winning products and service
Over 30 years of Basement Waterproofing, Crawl Space & Foundation Repair service
Licenced, dedicated contractors
Lifetime warranties - ask for details
Free, no-obligation estimates - contact today!

Services:

Basement Waterproofing to help prevent basement flooding.
Crawl Space Encapsulation to help protect against mold, rot, and moisture problems.
Moisture Control for basements and crawl spaces to help prevent mold, rot, and musty odors.
Air Purification to eliminate indoor air contaminants, including allergens, bacteria, odors, and more, using a unique 3-stage filtration process
Foundation Repair for cracks, bowing walls, uneven floors, and more.

Products Installed:

Sump Pumps with Battery Backup Systems
Interior Drainage Systems
Crawl Space Vapor Barrier & Encapsulation System
Energy-Efficient, Self-Draining Dehumidifier
High-Performance Aspen Air Purifier
Waterproof, Mold-Resistant Finished Walls and Flooring
Foundation Piers & Wall Anchors

Service Area:

NV Waterproofing offers its 30 years of basement waterproofing, crawl space repair, and foundation repair servies to the following areas:

Greater Washington D.C.
Suburban Maryland, including Montgomery, Prince Georges, Saint Marys, Charles, and Frederick counties.
Northern Virginia, including Arlington, Fairfax, Loudoun, and Prince William counties.

Below, check out before and after photos of wet basements, damp crawl spaces, and failing foundations they've fixed. Plus, browse through positive reviews and testimonials from thousands of satisfied customers! Call today to schedule your free evaluation and estimate.

Services Offered

Basement Waterproofing Crawl Space Repair Foundation Repair

Reviews
Testimonials
Before & After
Awards
Team

By Tom B. Ashburn, VA

"Very good overall experience with your company"

By Tricia Ashburn, VA

"Jaime Baries came to our home to give us an estimate and..."

By Sarah L. Ashburn, VA

"Excellent installation service, polite and respectful. They..."

By Jennifer M. Brambleton, VA

"Brenden did a great job explaining the new system to me. He..."

Crawl Space Encapsulation in Ashburn, Virginia

In Ashburn, Virginia, a homeowner was ready to take control of their crawl space—once a damp, uninviting, and energy-draining area beneath the home. They reached out to NV Waterproofing and Foundation Repair in search of a long-term solution that would not only eliminate moisture concerns but also boost their home's overall comfort and efficiency. Our expert team recommended a comprehensive crawl space encapsulation upgrade featuring SilverGlo™ insulation panels and durable drainage matting—two critical components in creating a healthier, more functional space below the living area. SilverGlo™ insulation was installed along the crawl space walls to establish a highly effective thermal barrier, reflecting heat back into the space while increasing energy efficiency throughout the home. Its innovative design also resists moisture and mold growth, making it ideal for below-grade environments. To handle potential ground moisture, we also installed drainage matting across the floor. This rugged layer improves water flow beneath the vapor barrier, helping direct any water toward the drainage system and keeping the crawl space consistently dry and protected. With this upgrade, the once-problematic crawl space is now dry, insulated, and far easier to access—no more musty odors, fluctuating humidity, or wasted energy. The homeowner can move forward with peace of mind, knowing their investment not only protects their home’s structure but also contributes to a healthier living environment. In Ashburn and beyond, NV Waterproofing and Foundation Repair is proud to bring expert crawl space solutions to homeowners who expect more—comfort, efficiency, and lasting protection.

Before

After

Settling Concrete Driveway Lifted and Restored in Ashburn,VA

A homeowner in Ashburn, VA, faced daily frustration and concern as their once-smooth concrete driveway developed uneven joints, cracks, and sinking slabs. These problems went beyond aesthetics—the uneven surface created serious trip hazards for the family and anyone visiting, making everyday activities like carrying groceries or letting kids play outside risky. The visible neglect also dragged down the home’s curb appeal, prompting the homeowner to seek a lasting, professional solution. Turning to NV Waterproofing and Foundation Repair, the homeowner found the expertise needed for a permanent fix. Our team devised a comprehensive, two-part strategy to restore the driveway’s safety, durability, and appearance. First, we tackled the sunken slab with the PolyLevel® injection system. By drilling small, dime-sized holes and injecting a high-density polyurethane foam underneath, we were able to fill voids, stabilize the soil, and lift the concrete back to its original position—all with impressive precision. The result was a level surface, free from trip hazards. To ensure the repair would last, we applied NexusPro® Joint Sealant to all cracks and control joints. This flexible, silicone-based solution guards against water intrusion, shielding the underlying soil from erosion and further settling. Unlike conventional caulk, NexusPro® resists UV rays and extreme weather, maintaining a clean, finished look over time. The transformation was immediate: the previously hazardous and unsightly driveway became safe, stable, and visually appealing. Sealed joints gave it a polished finish, boosting the overall curb appeal of the home. The Ashburn homeowner was delighted—not only with the quality of the repair, but with the confidence that their revitalized driveway would stand the test of time. This project is a testament to how NV Waterproofing and Foundation Repair turns hazards into assets, restoring both beauty and peace of mind.

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After

Preserving the Past, Protecting the Future: Basement Waterproofing in Historic Leesburg, VA

In the heart of Leesburg, VA, a historic home was facing a quiet but persistent enemy—basement moisture. Beneath its timeless charm and original craftsmanship, damp walls and pooling water threatened to undermine both the structure and the legacy of the property. The homeowner, deeply committed to preserving the soul of the space, turned to NV Waterproofing and Foundation Repair to bridge the gap between old-world beauty and modern protection. Our approach blended care with cutting-edge solutions. After a detailed assessment, we installed a full waterproofing system designed to work in harmony with the home's historic foundation. CleanSpace was applied to shield the basement walls with a durable, moisture-blocking barrier. Beneath the surface, WaterGuard captured intruding groundwater, channeling it to the powerful SuperSump system for fast, reliable removal. And to protect the system year-round—even during harsh Leesburg winters—we added IceGuard, ensuring water can escape even when temperatures dip below freezing. The transformation was profound. What was once a damp, aging basement is now dry, clean, and ready to support modern living—all without compromising the integrity of the home’s history. At NV Waterproofing and Foundation Repair, we don’t just fix old homes—we help them thrive. In Leesburg and beyond, we’re redefining what it means to protect the past while building for the future.

Before

After

Driveway Reimagined: Concrete Repair Success in Herndon, VA

In Herndon, VA, a homeowner was growing increasingly concerned as their once-smooth driveway showed deepening cracks and uneven sections—making both curb appeal and safety suffer. What seemed like just another aging surface was actually a sign of underlying soil issues threatening the concrete’s stability. That’s where NV Waterproofing and Foundation Repair stepped in with a smarter solution. Using our cutting-edge PolyLevel system, we lifted and re-stabilized the sunken slabs with pinpoint accuracy—no heavy equipment, no lengthy disruptions. To finish, we sealed the joints and cracks with NexusPro, a flexible, long-lasting material built to stand up to Virginia’s ever-changing weather. The result? A smooth, revitalized driveway that’s as sturdy as it is sleek. What once looked like a problem now feels like a fresh beginning—ready to welcome cars, guests, and everyday life with confidence. At NV Waterproofing and Foundation Repair, we believe even driveways deserve exceptional care. If your concrete is cracking, sinking, or shifting, we’ve got the tools—and the expertise—to restore strength and peace of mind, one slab at a time.

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