Professional Foundation Repair & Concrete Services

NV Waterproofing & Foundation Repair is your local expert for fixing cracked, sunken, or failing foundations and concrete. Serving Fairfax, we offer long-lasting repairs backed by trusted products and skilled technicians. We understand that every property has unique needs, and we tailor our solutions to address the root cause of your structural concerns, not just the surface symptoms.

Our Solutions

  • Concrete Repair Services

    Damaged concrete doesn’t have to mean full replacement. Our concrete repair services use lifting, leveling, and sealing techniques that bring slabs back into position quickly and cleanly. This approach saves time and money, while also extending the lifespan of your existing surfaces.

    • Commercial Concrete Lifting
    • Driveway Leveling
    • Interior Slab Repair
    • Porches and Patios
    • Pool Deck Repairs
    • NexusPro Sealant Protection
    • SealantPro Concrete Sealant

    From residential patios to large commercial slabs, our solutions restore safety and appearance with minimal disruption. The addition of NexusPro sealant further protects joints and cracks, ensuring your concrete resists weathering and remains secure for years to come.

  • Foundation Repair Services

    When foundation problems go unaddressed, they can threaten the safety and value of your entire property. NV Waterproofing & Foundation Repair offers advanced systems that do more than stop the symptoms—they resolve the root causes of structural movement, cracks, and instability. With our proven products and methods, you can feel confident that your home or business is built on solid ground.

    Whether it’s reinforcing walls with CarbonArmour, stabilizing sagging floors with SmartJacks, or addressing settlement with push piers, our systems provide comprehensive, long-term protection. We customize every repair plan to meet the unique challenges of your property.

  • Types of Foundations We Fix

    No matter what kind of foundation supports your property, our team has the knowledge and tools to repair it effectively. From older stone foundations to modern block or concrete designs, we have solutions that respect the integrity of your home while delivering lasting results.

    • Stone & Mortar
    • Poured Concrete
    • Brick
    • Cellular Concrete
    • Cinder Block

Request a Free Estimate in Fairfax, VA

Protect your home or business with reliable foundation and concrete repair. Contact NV Waterproofing & Foundation Repair today for a free estimate in Fairfax. Our experts will create a custom plan that keeps your property safe, stable, and looking its best, giving you peace of mind for the future.

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The Thrasher Promise

No matter the job – we aren’t going to feel good about the hard work we’ve done until you’re happy. So we’ll do it right or make it right. That’s the Thrasher promise.

For the last 45 years in the basement and foundation repair industry, we’ve focused on the value of doing whatever it takes to get the job done and “wow” our customers every step of the way.

Our promise to you:

An experience so remarkable you’ll give us a five-star review.

Before and After Pictures from Fairfax, VA

Check out before and after photos from some of our completed projects.
  • Sunken Concrete Step Repair in Stephens City, VA

    This Stephens City, VA homeowner was dealing with a sunken concrete front step that had settled over time, creating an uneven entryway and a noticeable tripping hazard near the front door. Sunken concrete steps can make everyday foot traffic unsafe for homeowners, guests, and delivery drivers, while also taking away from the home’s curb appeal. Our concrete repair team lifted and leveled the front step back to its proper position, creating a safer, more stable walkway and entrance. This concrete step repair helped reduce the risk of falls, improved the look of the front entry, and gave the home a cleaner, more welcoming appearance. The homeowner was thrilled with the outcome — a big transformation that improved both safety and curb appeal!

  • Basement Waterproofing in Winchestor, VA

    A homeowner in Winchester, VA, was struggling with a failing sump pump that couldn’t keep up during heavy rainstorms, leaving their basement vulnerable to water intrusion. The lack of a reliable backup system also left them worried about potential flooding during power outages. Frustrated and seeking a dependable solution, they contacted NV Waterproofing and Foundation Repair, a trusted basement waterproofing company in Winchester, VA.

    After assessing the situation, we replaced their old sump pump with a state-of-the-art TripleSafe Sump Pump system. This advanced system includes three levels of protection: a primary pump, a secondary pump for heavy water flow, and a battery backup to ensure the basement stays dry even during power outages. The homeowner now has peace of mind knowing their basement is fully protected, no matter the weather.

  • Pool Deck Leveling in Manassas, VA

    A homeowner in Manassas, VA, quickly realized their dream backyard pool was at risk when the surrounding concrete pool deck began to show serious problems. Uneven and sunken slabs created tripping hazards and unsightly cracks, making both safety and aesthetics a challenge for anyone using the space. Additionally, water from rain and pool use was pooling in low spots, causing slippery surfaces and further soil erosion beneath the deck. These issues not only threatened the safety of family and guests but also compromised the value and enjoyment of the home.

    Seeking an effective solution, the homeowner reached out to our team for a professional assessment. We identified the main cause of settlement: soil erosion under the slabs—a common issue in Manassas due to its clay-rich ground and fluctuating moisture. To address both the immediate hazards and prevent future damage, we recommended our two-part approach: the cutting-edge PolyLevel® concrete leveling system and NexusPro® Joint Sealant.

    The repair process began with drilling small holes into the affected concrete slabs, allowing us to inject high-strength PolyLevel® polyurethane foam beneath the surface. As the foam expanded, it filled voids, stabilized the soil, and gently lifted the slabs back to their original positions. The process was quick, clean, and minimized disruption, giving the pool deck a level, safe surface once again. PolyLevel® foam is waterproof and lightweight, reducing the risk of future settling and ensuring long-term durability, even in a wet poolside environment.

    To provide further protection, we sealed all cracks and joints with NexusPro® Joint Sealant. This flexible, weather-resistant sealant prevents water from seeping beneath the slabs, protecting the soil and concrete from additional erosion. The result was a clean, finished appearance that not only improved the look of the deck but also safeguarded it for years to come.

    Thanks to modern concrete leveling technology, the homeowner’s pool deck was transformed from a liability into a safe and attractive outdoor gathering space. The project was completed in a single day, with minimal mess and immediate results, giving the homeowner peace of mind and renewed pride in their backyard. If you’re facing similar issues with your pool deck in Manassas, VA, the PolyLevel® system and NexusPro® Joint Sealant offer a fast, effective, and lasting

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Review recommendations

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