Thompson & Sons Waterproofing provides first-class waterproofing services. Not only did they determine the source of all issues, they explained how they could be properly remedied in laymen’s terms. They are professional and responsive, and most importantly they are honest. Could not recommend them enough! Less

I had the pleasure of getting a sump pump installed in my home a few weeks ago. Typically, I would not refer to this as a “pleasurable” experience – but this was, and I am delighted with the results. My basement leaked for many years. It was not excessive but enough to be of concern. I got a couple of estimates and decided to go for one more. I called Thompson and Sons and talked with Matt about my problem. He was sympathetic to my situation and agreed to look at the issue even though he, and his crew, had to drive from Dundalk to Gaithersburg – minus the Key Bridge. I was impressed with his knowledge and honesty and signed the contract on the spot. His crew was there within a week. They were professional and courteous. The work was done quickly and there was no mess for me to deal with after they left. I would not hesitate to recommend this company to anyone dealing with waterproofing issues. They are honest, reasonably priced and thorough in addressing and solving the problem. Thank you, Matt, and team for a job well done and a pleased customer! Less

Awesome service!! Came over and told me what was going on with my basement and how to fix. Explained what was happening in about 5min and did not try to upsell me something I didn’t need. Will highly recommend this company to anyone needing water proofing. Less

Absolutely fabulous: fair, honest, and actually helpful. Helped me diagnose a water leak. Offered options, including not using their services, and if I do, offered an affordable price. Isn’t trying to sell the big dig. Actually helping me as a homeowner inexpensively solve some water problems. Thanks so much! Less

What a refreshing experience dealing with Matt Thompson. First, he suggested some things I could do myself at no cost. He stated that I should not spend any money until the free fixes don't cure the problem. There was no charge for the visit. Less

My experience with Thompson's sons, waterproofing, has been quite amazing. They're vast awareness and high craftsmanship is what my clients needfor all homeownership sales. Less

I had such a great experience with Thompson & Sons Waterproofing Inc. that I felt I had to leave a review. Despite heavy rain and terrible traffic delaying my inspection, Matthew kept me updated on his ETA and showed up with a smile.What truly stood out to me was the personal touch: the owner of the company himself came out for the inspection. How cool is that? It instantly gave me confidence that I was in good hands.Matthew, who assessed the issue in my leaking laundry room, was absolutely fantastic. He was professional, honest, incredibly helpful, and took the time to explain everything. Instead of trying to sell me services I didn’t need, Mr. Thompson actually advised me on what I could do myself to resolve the issue—without booking anything through his company. That kind of honesty is so rare and so appreciated. I knew I could trust him with my concerns.It’s refreshing to meet someone who genuinely wants to help rather than just make a sale. Integrity goes a long way. Matthew is a true professional who clearly cares about people and not just profit.If you’re looking for a trustworthy, reliable, and transparent waterproofing company, I wouldn’t hesitate for a second to recommend them. Five stars all the way! Less