NV Waterproofing
5th 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
5th 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
Washington, DC
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.”