Wet Basement? Stop the Damage Before It Gets Worse.
Finally, a local basement waterproofing company you can trust to do the job right. Permanent solutions — not temporary fixes.
Financing available on approved credit. Ask about our options when you call for your free estimate.
When Your Basement Starts Leaking, You Need Help Immediately
You've seen the signs — the musty smell after a Maryland rainstorm, the dark stains creeping up the walls, the puddles on the floor. Blocked gutters, saturated ground soil, and water running in through the foundation. Here's what's really at stake if you don't act:
Destructive Water Damage
Unchecked moisture discolors walls and floors, warps wood, and destroys anything stored in your basement — leading to thousands in unexpected repairs.
Dangerous Mold Growth
Maryland's humidity creates ideal conditions for mold. Mold spores cause dizziness, nausea, headaches, and serious respiratory problems — especially for children and the elderly.
Foundation at Risk
Water pressure against your foundation causes cracks to expand and structural instability to worsen. Bowed walls, settling floors, and chimney tilting are all signs of a foundation under attack.
Plummeting Home Value
A wet basement is a major red flag for buyers and home inspectors. It significantly reduces your property's market value and can derail a sale entirely.
We understand your situation. You deserve to feel safe and secure in your own home — not stressed about the next rainstorm. Let us help you solve your problem fast and get back to what's important in your life.
Don't Wait Until It Gets Worse.
We Fix Your Wet Basement Problem for Good
Unlike a general contractor, our focus as a specialized waterproofing company allows us to identify problems quickly and deliver the right long-term solutions. We diagnose the exact source of moisture and engineer a custom system for your home.
Financing Available on Approved Credit
Protect your home now and pay over time. Ask about our financing options when you call for your free estimate.
Interior Waterproofing & French Drains
Capture water before it enters your living space and safely redirect it away from your home. Our sub-floor pressure relief systems handle even the heaviest groundwater.
Exterior Waterproofing
We address water intrusion from the outside of your foundation, stopping moisture before it ever reaches your walls — a comprehensive approach to keeping your home dry.
Foundation Crack & Structural Repair
Seal foundation cracks and address structural concerns including bowed walls, settling floors, wall anchors, and underpinning. We've never met a foundation problem we couldn't handle.
Sump Pump Systems
Professional-grade sump pump installation that keeps your basement dry through the heaviest Maryland storms. Customized waterproofing systems tailored for your home.
Crawlspace Encapsulation & Vapor Barriers
Transform your damp crawlspace into a clean, dry, healthy space. Includes encapsulation, dehumidification, insulation, and wall pressure relief systems.
Mold Remediation & Abatement
Safe, effective removal of mold spores and growth. We isolate the contaminated area, remove and clean, then repair — eliminating the problem at its source.
Which Solution Is Right for Your Home?
Your Community
A Leading Waterproofing Company You Can Trust
AA Action Waterproofing is a leading general contractor and construction company in Linthicum Heights, MD, specializing in basement waterproofing, mold remediation, and foundation repair. As a trusted waterproofing company in Maryland, we specialize in fixing wet basements, damp crawlspaces, and foundation issues for residential properties.
In our years of experience, we have never encountered a wet basement, crawlspace encapsulation, or mold removal condition that we couldn't handle. Give us a call today for a free, no-obligation estimate and professional basement waterproofing system tailored for your home.
Family Owned & Operated
We're not a franchise or a national chain. AA Action Waterproofing is a family owned and operated business serving Maryland, DC, and Northern Virginia with honesty and integrity.
No Subcontractors — Ever
We take pride in our work, that's why we don't employ subcontractors. When you hire us, our own experienced team does the job from start to finish.
Licensed, Insured & Bonded
MHIC License #51719. BBB Accredited Business with an A+ Rating. Member of the National Association of Waterproofing & Structural Repair Contractors.
Lifetime Warranty*
We stand behind our work with a Lifetime Warranty.* We also offer a low price guarantee and emergency service for urgent situations. Call for warranty details.
Why Choose AA Action Waterproofing?
When it comes to protecting your biggest investment, you need a specialized local expert — not a general contractor. Here's why homeowners across Maryland, Virginia, and DC choose us.
Licensed, Bonded & Insured
MHIC License #51719. Complete protection for you and your property throughout the entire project. We'll happily supply references.
BBB A+ Rating
Our reputation has been built on years of dedication, expert workmanship, and satisfied homeowners who recommend us to family and friends.
Free Estimates — Your Schedule
Thorough, no-obligation written estimate. Day, evening, and weekend appointments available. Call today.
Local Experts Since 1987
Over 38 years serving MD, VA & DC. We understand the local climate, soil conditions, and home construction of our region.
4.9-Star Rated by Homeowners
4.9 stars across 134 Google reviews. Recognized by Best Pick Reports, HomeAdvisor Top Rated, Angi, and Houzz.
Financing Available
Financing available on approved credit. Protect your home now and pay over time. Ask about our options when you call for your free estimate.
Estimate Valid for Life
Your FREE written estimate remains valid for as long as you own your home. No expiration, no pressure.
As Featured On
38+ Years. Thousands of Dry Basements.
Your Path to a Dry Basement
In just three steps, you can have a permanently dry basement and complete peace of mind. Our process is simple for you to get started right away.
Call for Your Free Estimate
Call us or fill out our form. We'll discuss your situation and provide a thorough, no-obligation written estimate. Day, evening, and weekend appointments available.
Receive Your Custom Plan & Estimate
We identify the exact source of moisture and walk you through a tailored solution. You'll receive a FREE written estimate that remains valid for as long as you own your home. No high-pressure sales — just honest solutions.
Professional Installation
Our experienced team professionally installs your waterproofing system with minimal disruption. We don't use subcontractors. We fix your wet basement problem for good — backed by our Lifetime Warranty* and 38+ years of expertise.
Community Trusted
Join homeowners across Maryland, Virginia, and the DC area who trust AA Action Waterproofing to protect their homes. Our reputation has been built on years of dedication and satisfied homeowners who recommend us to family and friends.
134 Google Reviews · Rated 5 Stars on Our Website
BBB A+ · Best Pick Reports · HomeAdvisor · Angi
"Highly recommend AA Action Waterproofing. From the moment I called, I received great professional service from Ms. Rhonda on scheduling. Next, Mr. Coleman was flexible with scheduling and stopped by the house for an estimate. This company was the most qualified and best price for the service I required. Mr. Coleman is knowledgeable, courteous and respectful. The crew did excellent work and was finished in two days. If you are planning a waterproofing project for your home at least call & get an estimate — you won't regret it."
"I cannot express how exceptional my overall experience was with this company. As a first time home buyer, I had no idea what to do when I found my basement flooded. I was panicking and so stressed out. I called and spoke with Rhonda who was able to quickly calm me down and put me at ease. She explained the process and scheduled someone to come out to my home the very next day. Steve Williams was phenomenal. He assured me that this was something that could be fixed and made preventable. He provided me with a quote and we got the job scheduled and completed within the same week. The crew treated my home with respect and did an amazing job. This company provided excellent service all around and was able to fix this huge headache and put all of my future worries at bay. I cannot recommend them enough!"
"It's rare to find a skilled professional who is both personable and clearly takes immense pride in their work, but AA Action Waterproofing is exactly that. Their team was a breath of fresh air! The quality of their waterproofing is exceptional, and their post-project customer service is second to none."
"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."
Join Hundreds of Happy Homeowners.
Frequently Asked Questions
Interior waterproofing manages water entering the basement by capturing and redirecting it through drainage systems and sump pumps. Exterior waterproofing stops water before it reaches the foundation by sealing the outside walls, improving grading, and updating drainage. We'll recommend the right approach — or a combination — based on your home's specific needs.
Yes. When your basement is properly waterproofed, it reduces excess humidity and prevents outside moisture from entering the home. Lower humidity means your HVAC system doesn't have to work as hard to cool or dehumidify the air, which can help reduce energy bills. Waterproofing also helps eliminate drafts and cold spots caused by damp foundation walls, creating a more stable and efficient indoor environment.
Costs vary depending on the severity of the problem, the size of your basement, and the type of system needed. After an assessment, we provide a clear, detailed written estimate tailored to your home — and that estimate remains valid for as long as you own your home. No hidden costs, just honest, upfront pricing.
Yes. We offer a Lifetime Warranty* on qualifying products and services to give you confidence that your home is protected for years to come. Warranty terms vary by product and service — call for full details.
In most cases, basement waterproofing is not covered by standard home insurance because it's considered a preventative home maintenance measure. However, insurance may help pay for damage caused by sudden and unexpected events, such as a burst pipe or appliance failure — depending on your policy. Coverage for groundwater or seepage is typically excluded unless you have specific add-ons, like flood insurance or sewer backup protection. It's always best to review your policy and speak with your insurance provider.
Have a question not listed here? Call us at (410) 927-5576 — we're happy to help.
Every Day You Wait, the Damage Gets Worse
Water damage doesn't fix itself. Basement flooding is a major concern here in Maryland, especially after heavy rain or melting snow. The saturated groundwater makes it more likely that small leaks turn into big ones.
Mold can begin growing within days of standing water. Cracks widen. Foundation weakens. A cheap or budget job may use materials that don't last — putting your basement at risk of leaks in the future. Get it done right the first time.
Your Estimate is 100% FREE
A thorough, professional written estimate at absolutely no cost and no obligation. We'll walk you through exactly what your home needs.
Zero Obligation — No Pressure, Ever
Get your detailed estimate and custom plan. Your written estimate is valid for as long as you own your home. No expiration date.
Lifetime Warranty*
Our work is backed by our Lifetime Warranty.* Licensed, bonded, and insured — MHIC #51719. Call for warranty details.
Emergency Service Available
We offer emergency service for urgent situations. Day, evening, and weekend appointments available. Maryland's heavy rains don't wait — and neither should you.
Get Your Free Estimate & Reclaim Your Home
Stop letting a wet basement cause you stress. Get a permanent solution from Maryland and Virginia's most trusted waterproofing experts — proudly serving your community since 1987. Get your free, no-obligation estimate today and a detailed plan to keep your home dry for good.
Get Your Free Estimate
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