NV Waterproofing
7th year as a Best Pick
certified company
Based on 226 reviews
Our Certification Process
Best Pick Guarantee
Verified License(s)
Verified General Liability Ins.
Verified Workers' Comp
7th year as a Best Pick Call
"We focus on delivering a high-quality job the first time as well as an honest, professional experience for our customers. We pride ourselves on the excellent customer reviews we receive."

John Forster | President
Company Information
Services Offered
NV Waterproofing offers interior and exterior waterproofing and drainage systems, backup sump pump systems, window wells and drains, erosion control, commercial sealants, crack repair, sheet and liquid waterproofing membranes, French drains, structural repair, regrading, driveway drains, mold prevention, and downspout drainage systems.
The company offers a lifetime warranty on most interior work and varying warranties on other services.
Company History
NV Waterproofing has been serving customers since 1986.
The company is a Custom Builders USA (CB/USA) Preferred Vendor and a member of the Northern Virginia Building Industry Association (NVBIA) and the DC chapter of CB/USA.
Areas Served
Prince William, Fairfax County, Loudoun County, Arlington County
A selection of 226 homeowner reviews:
“It was great. It's the best thing I ever did to my house. They had to improvise on the fly, but it worked out beautifully. They put a drain and a second sump pump in my basement. It was an A.”
“They did waterproofing for me. They came in, did the job efficiently, and totally cleaned up. I haven't had a leak at all—A+.”
“They did a French drain for us. They were very professional, and they did good, quick work. They were very clean and left everything very nicely. It was just a really positive experience. I'd give NV Waterproofing an A+ overall.”
“The customer service was very, very impressive. The quality of work was great, and we haven't had any water issues.”
“They did the work on time, and it's held up perfectly. They did waterproofing and sump pump installation. I'd give them an A.”
“They did a good job. They did waterproofing for me. I'd give them an A+.”
“NV Waterproofing put in a waterproofing system in the basement. They completed the job on time. The crew was very efficient, cleaned up well after they were done, and did exactly what they said they were going to do. I'd give them an A.”
“They were great. They did waterproofing. I'd give them an A. Their customer service was good.”
“They were here waterproofing our basement. We had a small leak, and they came in, did some injection shots, and then sealed the basement. They were friendly, courteous, on time, and under budget. There was nothing not to like. I'd give them an A.”
“They did waterproofing, and the installation of a sump pump. They did what they were supposed to do, on time and on budget. They get an A on everything.”
“We had a crack in our basement that they fixed. I'll give them an A.”
“NV Waterproofing did the waterproofing for the basement, ran a drain out to a ditch, and did a sump pump installation. We had a couple of friends who'd used them, and they said they did good work. They were right. They came over and installed everything on time, and they did it when they said they would do it. It took them one extra day, but they did fine. I'll give them an A.”
“They put in a sump pump for us, and they did a good job. They finished the same day. I'll give them an A.”
“They did very good work. They did waterproofing. All the people involved were professional and courteous, and they responded pretty quickly. We had a minor issue come up unexpectedly and they had a gentleman come out and take care of it, right on the spot. It was a very positive experience. They get A's across the board.”
“I had such a positive experience.”
“I'd say they're an A.”
“They were thorough, knowledgeable, and timely. They got the work done, got it done correctly, and we haven't had any issues since. They did waterproofing, and they put in a French drain inside the basement. I'd give them an A.”
“NV Waterproofing made it a completely positive experience. I'd give them an A rating.”
“I had a great experience with NV Waterproofing. They installed a drainage system in my window wells for my basement that were flooding and leaking into my house.”
“It was well done, it was quick, and it's been looking great. They installed a sump pump for us. I'd give them an A overall.”
“The person they sent over was a real professional and had lots of good ideas as to what the problem was. They were waterproofing some cracks that had emerged in the basement wall. I'll give them an A.”
“They did a very nice job with us. I was very pleased with them.”
“They were very quick and knowledgeable. They installed sump pumps. They get an A overall.”
“NV Waterproofing did a crack repair in a cement wall and there hasn't been anything leaking since then. I'd give them an A.”
“They did some waterproofing work on a house that we owned and sold, and they did a great job. They came in, they got it done, and they got it cleaned up nicely. I'd give them an A.”
“They were responsive. They were professional. They were very thorough in terms of explaining everything. We even had a small issue with the measurement of one of the pipes—one guy told me one thing, and another guy told me something else—but they totally rectified it by giving us a credit and not charging us for the additional footage. They were good. It was a positive experience. We haven't had any water issues since. They installed our sump pump and did some outside drainage stuff for us. I'll give them an A.”
“They had good communication and expert opinions on what needed to take place to install a French drain in the basement. I'd give them an A.”
“NV Waterproofing did two French drains for me. I'd give them an A.”
“They did the work that we agreed upon, and they did it well and in a timely fashion. They built a new half wall in our sub-basement, and they also put in a drain and a new sump pump. I believe we found them through a referral from my brother, and I would recommend them to family and friends. I would grade them as an A.”
“NV Waterproofing did a good job, and we haven't had any problems with leaking since—that's all we really needed. They did waterproofing. They were knowledgeable, clean, and efficient. They get an A rating.”
“Everything was great, and they did a good job. It was waterproofing. They fixed the problem. I would say that they get an A grade.”
“They arrived when they said they would, and they got the job done in the time frame that they specified. They were polite and professional, and so far, it looks like what they did is working. They offer a 20-year warranty as part of their work, so I'm completely satisfied. They excavated about 34 feet of the exterior of the house, tarred it, put a water retardant material over that, and did the piping to collect water down at the bottom of it. They filled it in and put in a sump pump. They did it in five days, just as they said they would. I was totally satisfied based on what I now know, and I would grade them as an A.”
“NV Waterproofing did an excellent job. I was happy with their service, and I would use them again. They were very professional. We had a leak in the basement bedroom, and the water was coming through the basement wall. They get an A+ grade.”
“They did a really good job, and they solved the problem. They were outstanding. I had six to eight leaks in the concrete wall in my basement, and they sealed and stopped the leaks. I would rate them as an A, for sure.”
“I had a very good experience with NV Waterproofing. They got the job done to our expectations, they always showed up on time, and they cleaned up after themselves. They installed a sump pump, and they redid our floor. I'd give them an A+.”
“I don't have water in my basement anymore, so they were successful. They cleaned up after themselves, too—A+.”
“We're in pretty good shape. We recently had waterproofing from NV Waterproofing about a year ago, and it's held up pretty well. They were able to help us. We had a number of cracks in the basement that they were able to seal, and the water has since stayed out. It's holding up very well, and it's in good shape. The technician knew what he was doing, and they made very little mess. I would give them an A+.”
“I was very happy with them and very satisfied with their professionalism. The workers were very, very professional, timely, and communicative. I would use them again, if the need presents itself. They waterproofed part of the outside of the home. It took several days, and I was satisfied with their work. I would rate them as an A+.”
“It was, overall, a very good experience. They did a good job fixing the problem. There were no issues. There was water in the basement—it was coming from the outside into the home. The service they provided prevents the problem from occurring again, so I would give them an A+.”
“They were prompt and on time. The most important thing is their system actually worked. My basement water problem is no longer an issue. It all worked, and they did the work proudly. If there were any issues, they fixed them right away. They did the inside for me—they did a sump pump. They're an A+.”
“It was quick and pleasant. They waterproofed my basement. Water was coming from the outside, and everything is OK now. I would rate them as an A.”
“They did a good job, and it was a very positive experience. They were very prompt—as soon as we called them, they sent somebody. The gentleman was very good. He came in, and he did a good job. We had concrete in our basement, and there was a crack. Then he came in and fixed it very nicely, and afterward, we had no further leaks of water. I would rate them as an A+.”
“From the estimator to the finished job, they were a nine out of ten. They did a really hard job by chopping all the concrete out of the basement around the walls. They dug a ditch 12 to 18 inches from the wall, put in a plastic pipe, put in gravel, added cement to it, and cleaned it up. They also did sump pump work. They're an A+.”
“Their service worked. I had a crack in the basement wall that needed to be filled—it occasionally leaked. The services did work, and I would give them an A.”
“I liked their flexibility and promptness when resolving the issue. I have had several companies come in and give me estimates—it was like, 'We have to do this, and we have to do that,' and it was this huge fee. With NV Waterproofing, I remember them saying, 'We can do this, and we can do that. Do this, is what we recommend—it's a little cheaper. We would go with that, and we can do this later.' I thought they were very honest in their assessments and recommendations, so I felt more comfortable with them. I had a crack on my basement wall, and everything has turned out to my expectations. I had no complaints and no issues whatsoever—A+.”
“NV Waterproofing did waterproofing work for my walk-up basement, where I had a drain issue. They did great work. What stood out about the company was the quality of their work—it was done on time, and they were very polite. It was good, so I would give them an A rating.”
“I was kind of working on this all by myself, and NV Waterproofing was very responsive to my many questions once they started. I actually had a distant family member kind of consult with them while they were on the job, because of a question I had, and they were very gracious about doing that. They were great. They did waterproofing work. Overall, it took probably a week to complete the entire job. I found them through Best Pick Reports. I felt as though the technicians had a good attitude, and their cleanup was very good. I'd give them an A.”
“NV Waterproofing fixed a leak in our basement, and that was my first time using them. I chose them after a recommendation from another contractor. When that work was completed, I did not have to go and clean up behind them. They did not have to come back out and touch anything up, that I recall. I'd give them an A.”
“NV Waterproofing did a very good job. They installed an outside sump pump. The quality of the work was very good, and so far, the work's very good. An A is the grade I'd give them, and I would use the company again.”
“I think I got exactly what I needed. I think they were very good in describing what the fix would be, and they did it. They put in two sump pumps. The cleanup was very good. This was the first time I used that service, and I would give them an A.”
“They did work for a drain and sump pump. It was a very positive experience, and I would recommend them without hesitation.”
“What they did worked. They did waterproofing in my basement's interior. They were able to do it in a timely fashion. I would give them an A.”
“NV Waterproofing did an excellent job. They did waterproofing on one end of my house, and they did an absolutely wonderful job. They did the job the way I felt it should be done, and when they left, everything looked perfect. They're an A+, no doubt.”
“NV Waterproofing was very cooperative, and they did a great job. They waterproofed my basement in two different places. The first job was inside; the second job was outside. Everything worked when they were done, and they cleaned up after themselves. Their initial contact was wonderful; the crew was good—no complaints about them whatsoever—A+.”
“NV Waterproofing was great; they were on time; and everything was clean and, I would say, perfect. They installed a French drain and a sump pump. They were able to do everything in a positive fashion. I would grade them an A+.”
“They did waterproofing work for me in March. It was awesome work. They put in a sump pump system. I would recommend them 100 percent. Everyone that I dealt with—from the sales consultant to the workers as well as the office staff—was extremely patient and extremely accommodating. I would give them an A+.”
“I had a water leak, and they fixed it. I heard about them through friends of mine. I was very happy with NV. They were very professional. They knew their business and were willing to help. They got here in a timely manner, and they did an excellent job. I would give them an A+.”
“It was great. They were quick, they stuck with the estimate, and the guy was here for less than hour. I had a leak in the basement where water was seeping in from the outside, and they stopped up the leak. It was waterproofing with some kind of weird epoxy stuff. I don't know the mechanics; I just know that it works. It's been perfect ever since. I would recommend them. They definitely get an A.”
“They dried out our crawlspace and put in a sump pump. It was waterproofing work. Someone referred me to them. I felt the guy who came out, Jim McCabe, seemed like a very trustworthy person who seemed extremely knowledgeable about this sort of a process. He seemed very honest, too. I'd give them a solid A.”
“They installed a waterproofing system in the house. I heard about them from my daughter. I was very pleased with the service. I thought the customer service and workers were excellent. They were absolutely polite and respectful. I would give them an A.”
“NV Waterproofing was clean and neat. They were concise and precise about how they did it. It took the guy like three hours just to make the plan. They were measuring everything from this way to China. It was just an expert job. I have no water in my basement. I give NV Waterproofing an A+ grade.”
“I thought they did a very good job. They responded very quickly, scheduled the work, and showed up. They did it really well, I thought. They did some interior waterproofing on the foundation. I'd give them an A+.”
“My husband is the one who takes care of the house, so I don't really know all the details. I think they installed a sump pump. They might have been in some booklet that we got in the mail that was like DC's Best Picks for home repairs. My husband dealt with the customer service and workers. The work is holding up fine, and we haven't had any trouble. I would give them an A+.”
“NV Waterproofing did waterproofing for us last year, and we were very happy with them. It's held up just fine so far. We didn't have any communication problems with the company. The workers were very polite and helpful. I would give NV Waterproofing an A grade.”
“They did some flashing and waterproofing. The workers were great. They were definitely an A. As far as I know, the work has held up fine since it was done.”
“The work is fine. They did a great job. I used them years ago. Someone recommended them to me. They persisted until they solved the problem, and they were very good about coming back. They did waterproofing work for me, and it's still holding up well today. I would give them an A.”
“They did waterproofing. The work is holding up fine. We haven't had any problems. I would give them an A.”
“They waterproofed my basement. We moved out of the house, but while we were there it was fine. They did a nice job. I would give them an A.”
“NV Waterproofing did what they were supposed to do. Everything was according to the contract. They started and finished it on time. We haven't had a rain yet, but so far, it holds up. I would give NV Waterproofing an A grade.”
“They did the tank. I thought it was great. It looks very solid. They did the footing as well as the stuff on the wall. I haven't had any problems since then. I thought they did a great job of it. I'd give them an A.”
“They fixed a minor crack in the wall. Everything was first-rate. The work seems to be holding up well. I would recommend them. I feel very comfortable recommending them to somebody else. In fact, they did good work, and they did everything they promised at the price they promised. I would give them a solid A.”
“They did an excellent job. I thought that they clearly had expertise; they knew what they were doing. They recommended a sensible solution to my problem that was not necessarily the most expensive solution. We had a couple of glitches, but they always made it right. They were very responsive, and they always showed up on time. They waterproofed my basement, did some exterior excavation, and then waterproofed the side of the house. I heard about them in some sort of booklet I got in the mail. It was a white book with blue letters. It was excellent. I would definitely recommend them. I'd give them an A.”
“NV Waterproofing did waterproofing for me. I got a townhouse with an inground basement, and there's a small window at the bottom underneath the deck. Every time it rained, it came down hard—hard rain. The basement flooded, like, two or three times, and it cost me about $1,000 each time. NV Waterproofing came out and evaluated the situation and what was going on. They came up with a solution with a kind of pump to flush the water away from the house when it'd get into that thing under the window. It was really great. Since then, we haven't had a flooding on that property. The technicians were very considerate, and they basically did a very professional job. I'm extremely satisfied. They responded to my request in a timely manner. I would give NV Waterproofing an A+ grade.”

NV Waterproofing is awesome. They installed two window wells, a sump pump, and subflooring. I cannot say enough nice things about them—from the initial call to the scheduling and the follow-up. It rained for three weeks, and I haven't seen a drop of water. Absolutely amazing—A+.

NV Waterproofing did a wonderful job. I'm really pleased. In fact, I'm going to be using them again—that's how pleased I am with them. They installed a huge drainage system and changed my sump pump. It was exceptional. They're an A+.

NV Waterproofing waterproofed my house in the spring. They did an excellent job, and I'm very happy with the work they did. I had a vertical crack in my basement foundation. They sealed it from the outside with a three-layer membrane, and they did a neat job. Everything has worked out well—A+.

I was very pleased. I had water coming into my basement, and NV Waterproofing was able to identify that it was seeping in through the foundation, where a pipe came in from the street. Our plumber hadn’t adequately sealed it. They cleaned it out, resealed it, and we’ve had no more trouble. They just did a beautiful job—and it’s been effective.

I had a complicated situation, and NV Waterproofing came up with a really good solution and executed it very well. The technicians were great. The area outside the basement was at risk of flooding, so they added additional drainage. They did a really good job.

They really are the best at their business. I had a problem with leaks, so they patched the inside of the basement. They were really hard workers, and we had no problem communicating. I would give them an A+.

The gentleman from NV Waterproofing came in, and he was great. He looked at the place where I thought I had water coming in from the outside, and he said, 'I don't think that's your problem at all.' He said, 'It looks like you have a clogged drain line on your HVAC system, so you really ought to have somebody come out and service that, and that'll probably fix everything.' And he was right. He was honest with me. They didn't charge me a dime, and it turns out that their advice was dead-on. If I ever need waterproofing, they're the ones I'm calling.

We had some water in our basement, and they did everything they said they were going to do. We haven't had enough rain to see yet whether it works or not, but I'd call on NV Waterproofing again based on everything in my experience. They cleaned up the place really nicely, they did what they said they were going to do, and it looks like they did a good job.

It was great service. We had extra water that needed to be drained, so they did waterproofing. They took care of our problem, and everything turned out well. I'd recommend them.

They waterproofed our basement. We were happy with the service, and we'd use them in the future.

They put in a French drain system for us, and their work was great. On the front end, the hand-holding that the president did and the customer service were both very good.

They put a large drain in the stairwell that empties into our backyard, and they ran that out 20 or 30 feet because we had water in the basement. They diagnosed the problem, which was the biggest part. We haven't had any water since, so it's working. It was all done efficiently and neatly—a professional job. We had done a lot of research on other people, too.

Another company told me they were going to do a lot, but when I called NV Waterproofing, they said, 'No, they're really just asking you for more money. They don't have to do that.' And then they were very efficient and very nice when they waterproofed my basement. I haven't had a flood yet, but fortunately, we haven't had much rain either.

They were really nice. They fixed a leak that I had every five years. They came in and did a good job, and I haven't had any problems. I was really happy.

NV Waterproofing did just fine sealing the cracks in my basement. The technicians that they sent out did a good job. They're an A.

NV Waterproofing did a pretty good job. The real test was this last storm we had. We figured if it was going to leak, that would be the time, and we had not one drop of water. The technicians that they had sent out were knowledgeable, and they took their time and were very clean and neat. An A would be a good grade for them.

I'm pleased with the work NV Waterproofing did. The technicians were good. They put in a waterproofing system, and it does what it's supposed to. I would give them an A.

NV Waterproofing came and put some stuff in front of the house. They dug down and put something in front of the basement so that it wouldn't leak. The technicians were fine. At first, we had a little issue, and then they corrected it. I'd give them an A.

I was satisfied. They did a really good quality job, and they did everything that they promised to do. We had some leaking in our basement, so they did some digging outside and waterproofed it from the outside and the inside, and they also helped with the grading. I would use them again. I'd give them an A.

I'd recommend them; it's a good company. They put in a French drain for us, and our house doesn't leak anymore. They're an A.

They did an extensive job for us. They did some waterproofing for our basement, and it held up great in the last storm. They had good customer service, too. They get my recommendation. I'd say A—excellent work.

I thought NV Waterproofing was great. The salesperson was very thorough, gave me all the information I could have ever wanted, and then the person who came to do the work was so enthusiastic. He loves what he does.

NV Waterproofing put in a sump pump, and they lined all the walls, and they did what they needed to do to waterproof our basement. We haven’t had any problems. We were very happy with what we had done.

They repaired a fissure in my foundation and put in a little bit of a retaining barrier, as well as a conduit, to move water away from where the fissure occurred. I feel it was very good-quality work. There haven’t been any problems since. If I had a friend that needed a referral, I wouldn’t hesitate.

They did a marvelous job. I am 100 percent satisfied. This was probably two and a half years ago. There was standing water in the basement. We have had some horrendous rain since then. A couple of hurricanes came through and dumped tons of water, and my basement has been dry.

They did a great job. I was having water coming through my townhome basement, and I guess its drainage system was eroded. They actually ran a new drainage system for me and put in a sump pump. I’ve had no issues whatsoever at that townhouse since they’ve done it. They did a great job.

They were very knowledgeable. I had a major wet basement problem, and there was some cracking in the foundation. So they did the excavation around the outside, dug up the old drainage system, and put in some new drainage. I would use them again in a heartbeat.