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Basement Waterproofing Nationwide

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109 E Wheel Rd

Bel Air, MD 21015

+1 (410) 679-2000

http://www.bwn.com

You have a wet basement and you have a lot of questions. We have answers, lots of answers. Since 1987 BWN has been in the business of making damp and wet basements dry without costly excavation.

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Reviews

4.012 reviews

Jon D.

8/25/2025

Basement Waterproofing Nationwide, BWN, is one of those rare companies that does excellent work that stands the test of time and also honors their commitments decades after making them. Treasure...

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Carl B.

5/27/2025

Mike Williams and Mike Leggett provide excellent customer service, value and quality. Installed better waterproofing system for less than competitors and kept every promise and guarantee. Team was...

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Dana S.

1/28/2021

The team hit a gas line and left the job without notifying me of the possible gas leak or calling 911! Totally negligent.

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Thelma H.

11/25/2021

I had a boat load of water in my rec from from hurricane Ida. My sump pump couldn't handle the overflow. Jamison waterproofing installed two powerful pumps. The job was done professionally and...

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Susan B.

2/10/2015

I bought my first home in the spring. My realtor warned me that my new neighborhood has a reputation for water problems, but it's cool because my new house already has a sump pump. [bzzzzzzt]...

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