
Professional Concrete Repair & Foundation Repair Company in Alexandria, VA
Do you have a leaky basement, damp crawl space, foundation cracks, or sunken concrete in your Alexandria home? Whether in Del Ray, Old Town, Rosemont, Cameron Station, or Beverley Hills, NV Waterproofing & Foundation Repair is your trusted local expert. Since 1986, we’ve proudly helped homeowners throughout Northern Virginia protect their properties with reliable, warrantied solutions.
Our award-winning team understands the unique challenges that come with Alexandria homes—whether it’s the older brick foundations in Old Town or high water tables in Rosemont. We specialize in historic home foundation repair, masonry foundation repair, and brick foundation repair, delivering solutions that preserve structural integrity while respecting the character of older homes. You’ll get expert diagnostics, proven products, and timely service from crews who know the area well.
Why Homeowners in Alexandria Choose Us:
- Transferable Lifetime Warranty on Basement Waterproofing Systems
- 25-Year Warranty on Foundation & Crawl Space Repairs
- Proven Concrete Leveling & Crack Repair Systems
- Same-Day Financing Available
- Local Expertise with Decades of Alexandria Project Experienc
Our Solutions
Foundation Repair in Alexandria, VA
Are you seeing stair-step cracks in your brick? Doors that won’t close? Many Alexandria homes sit on expansive clay soils that swell and shrink with moisture, causing foundation settlement or bowing walls. In areas like Rosemont and North Ridge, we often see foundation issues tied to aging homes and poor soil compaction during original construction. Homes with older construction—especially those with stone or brick foundations—often require specialized masonry foundation repair or brick foundation repair techniques to ensure long-term stability. No matter what the cause of your foundation problems, early action can save you thousands in future repairs.

Concrete Leveling & Repair in Alexandria, VA
Uneven sidewalks? Sinking driveways? Cracked concrete around your home isn’t just an eyesore, but it can be a safety hazard and a sign of underlying soil issues. In Alexandria, shifting soils and changes in moisture can cause concrete slabs to settle, crack, or become uneven over time. Our team uses advanced, non-invasive solutions to restore your concrete quickly and effectively—without the mess or expense of full replacement. With PolyLevel® concrete leveling, we lift and stabilize sunken slabs, while NexusPro® joint sealant protects against water intrusion and future damage.

Basement Waterproofing & Leak Repair in Alexandria, VA
Are you experiencing flooding in your basement after a heavy storm, leaky foundation walls, or pooling water in your crawl space? Alexandria’s dense clay soil and proximity to the Potomac River can lead to poor drainage, especially in neighborhoods like Old Town, where historic homes may lack modern waterproofing.
We’ll evaluate the source of the water intrusion—whether it’s a failed sump pump, hydrostatic pressure, or surface runoff—and design a custom waterproofing solution that keeps your basement dry for good.

Crawl Space Encapsulation & Repair in Alexandria
Musty smells? Cold floors in the winter? These are signs that your crawl space might affect your comfort and air quality. Many Alexandria homes—especially in areas like Del Ray, Rosemont, and Old Town—have vented or unsealed crawl spaces prone to moisture, mold, and structural issues due to Virginia’s humid climate.

Contact us today for a free estimate in Alexandria, VA
If you need help with basement waterproofing, foundation repair, crawl space encapsulation, concrete leveling, moisture control, or indoor air quality improvements in Alexandria or nearby, get started by scheduling a free, no-obligation estimate today and discover why Alexandria homeowners trust NV Waterproofing & Foundation Repair with their biggest investment—their home. We can protect your property from the ground up!
Schedule your free inspection—
It’ll only take
a minute
Meet with a trusted expert, and get
clear answers about your home.
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.

Making headlines
Ready to get started?
Schedule a free estimate to start your repair journey with Thrasher.
Schedule your inspection
Fill out our form or give us a call to book your inspection. Share what you’ve noticed so we can send the right expert to your home.
Full home
inspection
An expert will inspect the problem area and surrounding conditions, including soil movement, drainage, structural integrity, and any related concerns.
Clear explanation
of findings
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.








