Arlington, VA Concrete, Foundation, Crawl Space & Basement Experts

Serving Every Part of Your Arlington Home

From driveway trip hazards to bowing foundation walls, damp crawl spaces, and leaky basements, NV Waterproofing & Foundation Repair provides end-to-end diagnostics and repairs in Arlington. Our team combines proven products with skilled installation to deliver durable results for structural stability, moisture control, and air quality.

Not sure where to start? We’ll assess your concrete, foundation, crawl space, or basement and explain options. No pressure, no obligation.

Our Solutions

  • Concrete Services in Arlington

    Lift, level, and seal slabs quickly, often in hours, so you can reclaim safe, great-looking surfaces without full replacement.

    • Driveway Leveling
    • Porch & Patio Repair
    • Interior Slab Stabilization
    • Pool Deck Lifting
    • Commercial Concrete Lifting
    • NexusPro Crack & Joint Sealant
    • SealantPro Concrete Sealant

    We address underlying voids and protect joints with NexusPro to resist Arlington weather and wear.

  • Foundation Services in Arlington

    Stop movement, reinforce walls, and restore bearing capacity with engineered solutions tailored to soil and structure.

    Permanent, low-disruption systems help protect property value and livability across Arlington.

  • Crawl Space Services in Arlington

    We convert damp, musty crawl spaces into clean, conditioned zones that support healthier air and stronger floors.

    • Access Doors
    • Crawl Space Dehumidifiers
    • Drainage Systems
    • Crawl Space Encapsulation
    • Crawl Space Pump Out Service
    • Vent Covers
    • Vapor Barrier Installation
    • Turtle Doors
    • Smart Vents Flood Vents
    • SmartJack Crawl Space Supports

    Encapsulate to block ground moisture, add Smart Vents for flood relief, and use SmartJacks to correct sag and bounce in floors.

  • Basement Services in Arlington

    Keep water out and air clean with a full suite of drainage, discharge, purification, and sealing options.

    • Aspen Air Purifier
    • Basement Exterior French Drains
    • Exterior Sump Pump
    • Yard Drainage
    • Yard Grading
    • IceGuard Discharge Line Protection
    • Interior Waterproofing
    • Exterior Waterproofing
    • New Construction Tar & Membranes
    • Replacement Filters
    • WaterGuard Iron Ochre System
    • FlexiSpan Crack Repair
    • SaniDry Dehumidification
    • Window Wells

    Whether retrofitting or building new, we design basement systems that match Arlington site conditions.

Book a Free Visit in Arlington, VA

Choose NV Waterproofing & Foundation Repair for reliable, warrantied solutions. Schedule your free estimate anywhere in Arlington.

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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 Arlington, 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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We’ll walk you through what we’re seeing in easy-to-understand language so you know the root cause of the issue, not just the symptoms.

Review recommendations

If repairs are needed, we’ll outline your options, pricing, and timeline so you can make the best decision for your home.