Services Provided

  • +Basement Waterproofing

    • Basement Window Well Installation & Replacement
    • Exterior Basement Waterproofing
    • Interior Basement Waterproofing
  • +Crawl Space Waterproofing & Encapsulation

    • Crawl Space Access Doors
    • Crawl Space Dehumidifiers
    • Crawl Space Encapsulation & Repair
    • Crawl Space Flood Vents
    • Crawl Space Pump Out Service
    • Crawl Space Vapor Barrier
    • Crawl Space Vent Covers
    • Dig Out Crawl Spaces
  • +Foundation Repair

    • Foundation Replacement
    • Foundation Settlement Repair
    • Retaining Wall Repair
    • Sagging Floor Joist Repair
  • +Sump Pump

    • Sump Pump Installation & Replacement
    • Sump Pump Repair & Service
  • +Windows

    • Egress Window Installation & Replacement
    • Window Well Installation & Replacement

Company Highlights

By Paula
Great Job Casey, Ricky and Jose! Thanks NV!!
By Carol
Sean is a true professional with great attention to detail. Very courteous and polite as well.
By Ishu
Sean was extremely helpful and went over and beyond.
By Jennifer
Sean did a great job diagnosing the problem with my sump pump and fixing the problem immediately. I would definitely recommend him and the company.
By Joseph
Casey,Grant and Ricky were outstanding. Extremely professional and hard working.
By Tom
Casey and the guys did a great job installing a trench drain in my basement. They were responsive and kept me informed with the steps. I would not hesitate to recommend them to anyone who needs a drain installed or water remediation.
By A.
Thank you! Would absolutely recommend NV to others.
By James
Special Thanks to the foreman Casey and his crewman Grant, very hard workers. These guys were very professional answered all my questions, practiced social distancing and cdc recommendations with mask and gloves at all times. Process went very smooth and the guys were very professional and compassionate. I will recommend NV to all my neighbors and church for foundation work.
By Sam
Casey Roberto and Jose were efficient friendly and did a great job. Thank you so much.
By Sheila
Great job. Very satisfied with work.
By Carolyn
No problems with the work. Crew was very rofessional.
By April
Casey is excellent. I felt comfortable having him as the lead on the job. Very trustworthy.
By Sharen
Sean was very professional and explained everything that was going on. He did a great job.
By Len
Installer Casey and his assistant were very professional and knowledgeable about all work performed. I would recommend them in the future.
By Peter
Manny's crew was amazing to work with
By G
By Gregory
By David and Susan
By Brigitte
Fred L.
Sterling, VA
The workmen showed up right on time. They were courteous and pleasant – and they told us EXACTLY what they were going to do. Once they dug down to the sewer pipe, Jim was proven correct as the pipe was broken completely in half. Originally, Jim thought the job would take 2-3 days. It was finished in one day – way beyond my expectations. This experience is one of the most satisfying I’ve ever had while having work done on my house. I can’t thank you enough for the courtesy, speed and quality your company provided. The team was fast and accurate. I am forever a customer, and if anyone asks, I will recommend your company as being the best in the business. The experience has been phenomenal, from the first day that Jim showed up to give the estimate right through having all the work done. Kudos to everyone in your company for doing a great job.
J M.
Sterling, VA
The reason for this high review is because of the high quality character of Jim.  NV came to my home to investigate water infiltrating my basement from a front foundation wall.  Jim assessed the problem as best he could, but because I had left the dry wall up he was unable to immediately access the area inside the drywall.  Being at work at the time, I asked my wife to cut back some of the drywall to take a better look.  Jim stayed and not only helped my wife cut away the drywall and remove sopping wet insulation, but helped her find that the problem had originated with a leaking pipe in the wall that we did not know was there.  Although the company policy against removing the drywall themselves seemed odd to me, nevertheless it was their policy.  Jim went above and beyond to help my wife remove the drywall and insulation, which with two small kids was going to be very difficult for her to do by herself.  He helped clean up and was polite and respectful.  While I am grateful I do not have a foundation leak, should I ever have one, I will call NV Waterproofing and ask for Jim.  Quality people are hard to find, thanks man.
Travis B.
Herndon, VA
We used NV Waterproofing (NV) to fix a basement water leak in an addition to our house. NV provided the clearest estimate (we received estimates from multiple companies), with clear pricing and identification of issues. NV completed the work promptly. While the initial work did fix the primary problem, we had a small leak remain. NV was great about coming back out to figure the issue out, and found a surprising construction anomaly causing the second small leak. NV fixed the problem (all as part of the initial estimate) and our basement has been dry since. We were very pleased with NV's persistence and ultimate solution to our problems. We strongly recommend NV.
Heather S.
Reston, VA
We have used NV Waterproofing several times now for different issues that have arisen in our basement. We have found them to be very professional, courteous, and knowledgeable. Unlike many other waterproofing companies which try to sell you very expensive one-size-fits-all whole-house solutions (which are a rip-off with no guarantees), NV Waterproofing takes the time to target your specific problem and provides the most economical and effective approach to the problem. We appreciated their honesty and creativity in designing a plan for our flooding issues. So far, all of their work has held up great! I would highly recommend them.
Carlos L.
Great Falls, VA
I wanted to take a moment to thank you and NV Waterproofing for a job well done. From your visit to our home, to the reasonable estimate, to my communications with Jayne, working with NV Waterproofing has been an excellent experience. The work crew showed up on time, finished in one day and left the basement very clean. My wife commented on how friendly the crew was, and they answered all of her questions. We look forward to rainy days now, without the fear of our basement leaking. Thanks again to all!
Jeff J.
Chantilly, VA
NV Waterproofing was called to a difficult and challenging waterproofing site, and they were able to meet the challenge with confidence and experience. The problems were resolved as were other issues found during job. They were respectful, responsive and thorough. They went beyond just waterproofing.
Arthur W.
Potomac, MD
Marketing representative Cristian Abrigo explained all aspects of the benefits of encapsulation to prevent and remove mold and the associated odors in my large crawl space. He explained the technical procedure for installation. He answered all my questions about the safety of the product and provided a safety data sheet and references. He was a great guy who went beyond the call of duty to make sure all my questions were answered. Cris was knowledgeable, pleasant and enthusiastic. The installation foreman was also very experienced and knowledgeable. He answered all my questions on arrival and used tarps to cover all the flooring. There was no mess in my house and the install was not invasive or infringing on daily activities. There was no residual odor or unpleasantness after completion. My house and the crawl space were neat and tidy after the installation. Most important, the smell of mold was finally gone from the room above the large crawl space. I highly recommend NV Waterproofing and will use them again for waterproofing in my home. 
Janet and Butch N.
McLean, VA
Thanks for doing the job so promptly. Your crew chief was excellent – very nice and professional.
Jonathan J.
Great Falls, VA
What a wonderful and amazing company. I called them because I had cracks in my basement floor.Their representative Bruce came out and he was unbelievably knowledgeable explaining to me what problem I had and why it was nothing to worry about. He could easily have charged me to do a repair as another company had suggested but he told me it was completely unnecessary. He was courteous took his time and unbelievably knowledgeable. What a gentleman and professional. I cannot say enough good things about this company.I highly recommend you call
Donald T.
Purcellville, VA
NV Waterproofing and their crew (Casey, Crew, Kevin, and Grant) were very professional from start to finish, they informed me in the beginning exactly what they were going to do and performed every step with great attention to detail and were very courteous and clean. As a general contractor I would highly recommend them and will continue to use their services for future work.
Christopher D.
Vienna, VA
Working with Jayne, Jim and their staff was easy and very professional. As a contractor, trusting you project or a portion of your project to another contractor is always an unknown. The entire crew at NV Waterpoofing put my concerns to ease and did an amazing job!! I have already recommended them to several other clients of mine, as well as plan on using them again. Your time, money and investment(your home), is in good hands with NV Waterpoofing!!!
Noah E.
Fairfax, VA
Wanted to thank Megan & Jayne for the professional way in which both of you and Mauricio Carvalho worked with me.   I also wanted to mention the foreman, Mr. Rodriguez, who explained things to me during the work, answered my questions and offered suggestions and alternatives.  He also went out of his way to purchase material and cover the hole in case of inclement weather.  I was very impressed with his knowledge and professionalism, and with everyone who worked on my project, and would be glad to recommend NV Waterproofing to friends.   I can see why NV Waterproofing has received such high marks from "Consumer Checkbook!"   Thank you, Noah  
Mat and Peggy M.
Ashburn, VA
Your crew worked hard all day, only taking a short time for a quick lunch. The men were neat, completely covering all areas that they used to remove concrete, dirt and debris. They were on task the entire time. We were very impressed. We have had a lot of work completed in our home over the last 38 years, and I am pleased to say that your employees are the most conscientious we have ever worked with.
Sara T.
Falls Church, VA
Mauricio and Cristian were the initial sales reps who came to examine the issue and they took the time to test drainage that might have potentially been creating the water issue. They offered a reasonable solution (sealing the visible cracks and holes in the concrete) and I was contacted within a couple of days with an estimate and scheduling options. Sean was our tech and he did a fantastic job diagnosing the issue beyond just the cracks. He not only address all the holes and cracks in the concrete and mortar, he sealed up additional entry points above the foundation. He sourced additional materials to cover openings for cable lines. He went above and beyond and gave us measured information on how we should continue to monitor and treat this area as the house settles. He was thorough, informative, and provided excellent service in his work. I'm very glad that Sean was the technician sent to us and I would specifically request him for your projects.
Scott T.
Falls Church, VA
The work that guys did for both the encapsulation work and the structural work to help out 70 year old house was AMAZING. All the doors are closing like they should...!!!Super Clean crew, everything was cleaned up at the end of the day.From Mauricio the Design Tech to Casey the Foreman and his guys Grant, Zach and Ricky were true professionals and I can recommend these guys and the company 10000%.Thanks,Scott, Amy and Landon
Jacqueline S.
Manassas, VA
We experienced a house fire and then our basement had a foundation leak. They were quickto come our and resolve the issue that actually fixed the problem! THANK YOU!
Peter V.
Falls Church, VA
We appreciated NV Waterproofing's honesty and the men who worked tirelessly in uncomfortably cold weather. We've had one big storm since they finished and the basement walls are nice and dry. Nice work!
Chelly Z.
Falls Church, VA
These guys were amazing. The initial visit was smooth, not pushy at all and he was even able to accommodate the relocation of a small drainage pipe. The demo to install the system was done beautifully, yes it was really good, you can tell they were precise and careful when doing so. Everything was clean, no stains on my carpet and they protected everything. No leak so far and I love it. Did I mention the price was excellent? I had 3 other companies to estimate thousands and even tried to sell extra unnecessary equipment. Thank you NV Waterproofing I have and will continue to recommend you.
Ramesh T.
Arlington, VA
A brief note to thank NV Waterproofing for extreme professionalism and courtesy in the manner in which my recent basement water seepage problem was addressed. From the initial contact with Jim, through the work with Roberto, Carlos and Jose, it was an overall pleasant experience – not to mention my contact with the owner and his responsiveness.
Blake B.
Washington, DC
Great professional service and able to respond in timely manner to the project need.
  • Redone Crawlspace in Potomac, MD - Before Photo
    Redone Crawlspace in Potomac, MD - After Photo

    Redone Crawlspace in Potomac, MD

    Here is a crawlspace we fixed and fully encapsulated in Potomac, MD.

  • CarbonArmor Wall Support in Fairfax, VA - Before Photo
    CarbonArmor Wall Support in Fairfax, VA - After Photo

    CarbonArmor Wall Support in Fairfax, VA

    Before and after the addition of CarbonArmor to stabilize this customer's bowing basement walls. 

  • Trench Drainage System Install in Clarksburg, MD - Before Photo
    Trench Drainage System Install in Clarksburg, MD - After Photo

    Trench Drainage System Install in Clarksburg, MD

    This homeowner was experiencing water issues in his basement that he believed to be resulting from foundation cracks. We installed a trench drain from the sump pump inside the basement to an exterior discharge line to make sre he'd never have any water issues in the future. 

  • Exterior Waterproofing of Front Stoop in Mc Lean, VA - Before Photo
    Exterior Waterproofing of Front Stoop in Mc Lean, VA - After Photo

    Exterior Waterproofing of Front Stoop in Mc Lean, VA

    Water was entering this Mc Lean, VA home via the front stoop and traveling down the foundation wall into the basement. In the before photo, you can see the evidence of water damage going down the back wall. We exposed this wall to the base of the footer and applied a liquid rubberized waterproofing sealant and drain board. This ensures that there will be no future water issues. 

  • Revamped Crawlspace in Falls Church, VA - Before Photo
    Revamped Crawlspace in Falls Church, VA - After Photo

    Revamped Crawlspace in Falls Church, VA

    Recent crawlspace renovation in Falls Church, VA that features our CleanSpace vapor barrier, SilverGlo, and adjustable SmartJacks. 

  • Annandale, VA Basement Unit Condo Full Perimeter System - Before Photo
    Annandale, VA Basement Unit Condo Full Perimeter System - After Photo

    Annandale, VA Basement Unit Condo Full Perimeter System

    This basement unit condo had pretty severe water damage that was causing mold and a musty odor. Water was entering the unit from a poorly constructed window well and from under the foundation slab.This made it very difficult for the community to get a tenant for the space, so they called NV Waterproofing & Foundation Repair to come in an permanently fix the problem. We installed a full perimeter system, utilizing our CleanSpace vapor barrier and WaterGuard. Any worries about future water damage are now a thing of the past. The unit is clean, dry, and ready for occupancy!

  • Basement Waterproofing in Arlington, VA - Before Photo
    Basement Waterproofing in Arlington, VA - After Photo

    Basement Waterproofing in Arlington, VA

    This Arlington, VA basement looks much neater and cleaner after the installation of our WaterGuard perimeter system and CleanSpace vapor barrier. We also installed a SuperSump and did drainage work outside the home to make absolutely sure the water would not be returning. 

  • SunHouse Basement Window Installation in Alexandria, VA - Before Photo
    SunHouse Basement Window Installation in Alexandria, VA - After Photo

    SunHouse Basement Window Installation in Alexandria, VA

    This is a window well that we upgraded to an egress with our SunHouse Basement Window Enclosure in Alexandria, VA. The finished product looks much nicer and cleaner and will allow a lot more light to enter the basement. 

  • CleanSpace Basement in Lorton, VA - Before Photo
    CleanSpace Basement in Lorton, VA - After Photo

    CleanSpace Basement in Lorton, VA

  • Basement Makeover in Southeast D.C. - Before Photo
    Basement Makeover in Southeast D.C. - After Photo

    Basement Makeover in Southeast D.C.

    We recently completed this basement waterproofing project in the District to rid the homeowner of their water issues once and for all. After removing the old existing sump pump and pit, we installed a nice, bright CleanSpace vapor barrier, our WaterGuard perimeter system, and a new UltraSump. This will insure that they have a healthy, dry basement for years to come! 

Angie's List Super Service Award 2010

Angie's List Super Service Award 2010

Angie's List Super Service Award 2011

Angie's List Super Service Award 2011

Angie's List Super Service Award 2012

Angie's List Super Service Award 2012