
Our Solutions
Basement Waterproofing in Vienna
Whatever the cause of your wet basement, NV Waterproofing & Foundation Repair has a solution. If your basement floods in heavy rain, or is always damp and musty, our waterproofing and moisture control solutions could help. If your sump pump or drainage system aren’t working like they should, we can recommend a better option. We’re homeowners too. That’s why we only install products that we know work.
- Multi-pump, cast-iron, submersible sump pump systems with built-in high water level alarm
- Battery backup pumps for continuous operation and protection in power outages
- Clog-resistant interior drainage channel – Collects water from walls and drains it away before it reaches the floor
- High-efficiency SaniDry dehumidifiers – No water buckets to empty and has a built-in air filter to trap mold spores and dust

Crawl Space Encapsulation & Repair in Vienna
Did you know that your crawl space could cause musty odors and cold floors upstairs? If you have a vented crawl space with moisture, mold, mildew, rot, or pest problems, we can help.
At NV Waterproofing & Foundation Repair, we use the CleanSpace encapsulation system to seal your crawl space from outside air. This will help stop moisture and mold problems.
We offer a variety of crawl space solutions, including:
- Vapor barriers
- Dehumidifiers
- Sump pumps
- Access doors and access wells
- Crawl space support jacks

Warrantied Foundation Repair in Vienna
Foundation problems only get worse over time. If you notice cracks in your foundation, basement walls that are bowing or any other sign that something’s not right, let one of our foundation specialists take a look – you’ll be glad you did. The sooner you take care of your foundation, the less money it will cost you in future repairs.
Some common signs of foundation problems are:
- Sagging floors and floor cracks
- Wall cracks
- Bowing walls
- Sticking doors and windows
- Tilting chimneys
With patented helical piers, push piers, wall anchors and crawl space jacks, we can handle any foundation problem. Normal settlement can cause foundation cracks, but they could also mean a serious structural problem.
We never recommend a solution that you don’t need. Our goal is to educate you on all the options and let you choose the best solution for your needs and budget.
To schedule your in-home consultation with a free written estimate, contact us today! We offer our basement waterproofing, crawl space repair and foundation repair services in Vienna, VA and the surrounding areas.

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.








