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  • We offer interest-free financing. Pay nothing in the first 12 months. Interest-free, with approved credit.
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Finally, A Local Basement Waterproofing Company

You Can Trust To Do The Job Right!

When your basement starts leaking, you know you have a problem and you need help immediately! We understand your situation, and we’ve created Basement Waterproofing Services to help you solve your problem fast and get back to what’s important in your life.

We are AA Action Waterproofing — one of Maryland’s most trusted names in Basement Waterproofing. We can help you fix your wet basement, wet crawlspace, or foundation problem.

Basement Waterproofing

Basement waterproofing

Finally, a Local Basement Waterproofing Company You Can Trust to do the Job Right! Our waterproofing company.

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Mold Remediation

Mold Remediation

What Is Mold Remediation? From mold remediation to mildew clean-up, AA Action Waterproofing has a solution for.

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Foundation Repair

Foundation Repair

Water can be a very destructive element. It flows and finds ways through cracks, causing varying degrees.

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Flooded Crawlspace Baltimore


If your home has a “crawl space”, the meaning is obvious – you can’t stand up. Just.

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Stop Leaks & Flooding!

How Does Basement Waterproofing Work?

When you need help, we are here at the ready to serve you. We’ve been in business for over 28 years, we’re local to Maryland, and we understand the climate and home construction of our local area.

Basement Waterproofing Service

Our process is simple for you to get started right away:

1. You call us or fill out our online form.
2. We provide FREE no-obligation estimates for homeowners.
3. We fix your wet basement problem for good!

The first step is to schedule your foundation inspection.  What this will involve is examining your foundation inside and out to determine exactly what the problem is.  We will then go over a solution explaining how we can fix the problem, leaving you with a FREE written estimate as long as you own the home.   This will take about an hour of your time.  We have day, evening, and weekend inspection available.  We look forward to hearing from you.

We offer interest-free financing. 12 months same as cash or no payment option until 2021, interest-free.

AA Action Waterproofing is RATED 5 STARS!

Based on recent reviews

“Wow great job. We had basement waterproofing and an egress window installed by AA Action. This was a major project for our family but everything went smoothly. I would definitely recommend this company. The estimator was very professional and did site visits while our job was in progress. The crew was polite and did a great job. The company called Miss Utility to have the area marked where outside digging was necessary. Thanks AA Action Waterproofing.”

Howard P.

Rockville, MD

“This was the best call I made. AA Action Waterproofing responded quickly. The inspector was very knowledgeable and answered all our questions. We had the work scheduled and the crew arrived on time and took great measures to keep our home safe and clean during the waterproofing process. Great service from start to finish.”

Elizabeth N.

Woodbridge VA

“We are very pleased with the service AA Action Waterproofing provided. The office staff was very thorough and the installation team took great pride in their work. The Foreman Brian answered all our questions during the job. This company was a pleasure to work with.”

Michael Y.

Baltimore, MD

“I’m a contractor and had a project in Arlington VA. This company did a great job coordinating the job from start to finish. They provided before and after pictures of the jobs progress. Job site was left clean and most importantly dry. We are now refinishing the basement with peace of mind. I will definitely call them for my next project.”

Leo R Contractor

Berwyn Heights, MD