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Best basement waterproofing pros near Frederick, MD

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TRUSTED BY FREDERICK, MD HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon76
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Frederick - Updated Nov 2026

Avatar for AA Action Waterproofing Inc
AA Action Waterproofing Inc
4.7(
383
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Frederick, MD and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Job was promised to be less than two days. The crew arrived at the time agreed on and was thorough, covered walls not affected by the work and were finished by the end of the morning. I will recommend AA Action to anyone in need to basement waterproofing, crawl space improvements and related items."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+17

Response time9 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Basement Waterproofing Nationwide Inc
Basement Waterproofing Nationwide Inc
4.6(
188
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Frederick, MD and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Basement Waterproofing Nationwide did excellent work in a timely and proffessional manner for a reasonable and appropriate fee. They said they would complete the work in 1-2 days and were done in one day. They were very careful and left things neater than they were before they came. We have used them before with great success and would use them again. So far, the problem we had, water in our basement, has not recurred, and our basement is bone dry. Tnank you Basement Waterproofing Nationwide."
Additional Photos
Response time2 days
12 neighbors recently requested a quote
Recommended by89%of homeowners
All Aspects Waterproofing, LLC
4.6(
188
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Frederick, MD and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"We are the 2nd owners of a 15 year old home. Don't know why the original owner/builder did not put a sump pump in the basement, as it would have been a cheaper option in the end. If you are building a new home with a basement, put a sump pump in, don't scrimp on what is a very valuable insurance policy. After looking at a handful of other companies to retrofit a sump pump in our cellar, we picked All Aspects Waterproofing, LLC. They did a great job! Very high quality work, and outstanding service. They did a great job! We enthusiastically recommend All Aspects Waterproofing to any homeowner!"
Response time1 day
13 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Basement Gurus, LLC
Basement Gurus, LLC
4.8(
217
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Frederick, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Warranties offered

"We had a great experience with Basement Gurus. Their team completed waterproofing work in our basement and was professional, knowledgeable, and thorough throughout the entire process. They took the time to explain the work, answered our questions, and made sure everything was completed properly. We appreciate their attention to detail and the peace of mind the completed waterproofing has given us. We would definitely recommend Basement Gurus to anyone in need of quality basement waterproofing services."
100 Ft 4 inch HDPE to drywell
Concrete Replacement
Egress Installation
Walls After Wall Pin Installation
After Concrete has been removed

+339

Response time1 day
538 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for NV Waterproofing & Foundation Repair
NV Waterproofing & Foundation Repair
4.5(
189
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Frederick, MD and surrounding areas

Approved (Corporate)

In business since 1986

Free estimates

Emergency services offered

"We needed to add supports under our main floor as well as waterproof the crawlspace. I have come across at least a dozen contractors of all shapes and sizes in the DC area since we moved here a year ago and none has taken care of me like Casey and his team at NV Waterproofing. Not only are they hard working, courteous and timely - they also are completely transparent and take pride in doing the job right the first time. Their passion for customer service and a job well done really resonates and now my house is stable and dry. Thank you Casey, Ricky & Pap! Highly Recommend!"
Crawlspace Encapsulation
Damp dirty crawlspace with Rodent infestation
Additional Photos
Exterior drainage
Wall Anchors for failing foundation walls

+29

Response time1 day
Response rate100%
32 neighbors recently requested a quote
Avatar for Always Waterproofing
Always Waterproofing
4.2(
427
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Frederick, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Credit card accepted

"I highly recommend this waterproofing company! From my very first contact with them—even before I hired them—they were kind, patient, and extremely helpful. My basement was flooding, and the initial person I spoke with immediately made me feel relieved and confident that I was in good hands. The entire team provided excellent service from start to finish. I’m very happy with the work they did! They were so neat with my house making sure none of the floors got messed up. They even steeped the porch outside when they were done. The test not a drop of water anywhere. Thank you so much. I forgot names. The lady in the office is wondering as well. Prompted!!!! They didn’t take are to give an estimate like other companies. 🙌🙌👍👍💪"
Updated concrete deck
Cozy front porch
Response time10 hrs
415 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for AFFORDABLEBASEMENTWATERPROOFING.COM INC
AFFORDABLEBASEMENTWATERPROOFING.COM INC
4.0(
108
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Frederick, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I am a new homeowner and I purchased the property with the warranty of the previous owner. I needed new batteries for the sump pump and window well cleaning, I recieved immediate service and the warranty was honored. The technicians were very knowledgeable and courteous. I am very impressed with the work that they did in my basement. I would highly recommend this company to anyone needing water proofing. The did a great job."
Waterproofing
Waterproofing
Waterproofing
Waterproofing
Waterproofing

+88

Response time1 day
Recommended by83%of homeowners
Avatar for Best Buy Waterproofing, LLC
Best Buy Waterproofing, LLC
4.4(
155
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Frederick, MD and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Exceeded my expectation with waterproofing my entire basement + window wells. These guys are the real deal! I worked with Rob and I was educated and all my concerns were addressed. They do it right by you, the contract missed a window well and they were able to addressed that without having to go through a whole new quote/contract. Helped move some furniture around and left the place clean."
Response time2 days
Recommended by98%of homeowners
Avatar for Once & Done Waterproofing Solutions, LLC
Once & Done Waterproofing Solutions, LLC
4.9(
62
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Frederick, MD and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Once and done waterproofing helped me out with a small annoying leak Iâ  ve had around a pipe. The owner called me right away, came out the next day for an estimate, and fixed the leak the day after. His crew is friendly and courteous and hard working. Explained every step they weâ  re doing. Did such a great job, I had the bury some drain pipes and install a rain water reservoir. Very reasonable pricing and veteranâ  s discount."
Demo and Install Phase
Demo  Phase
Demo and Install Phase
Install Phase
Demo and Install Phase

+14

Response time12 hrs
Response rate90%
10 neighbors recently requested a quote
Avatar for JES Foundation Repair
JES Foundation Repair
4.5(
1,449
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Frederick, MD and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"We had an excellent experience working with JES to design and install our basement waterproofing system. Our field inspector Bill R. was fantastic -- he spend extended time listening to our concerns about water intruding into our basement, and recommended a system designed specifically to solve our problem, including customized features that no other company had even thought of. Our installation crew, including foreman Joey D, co-foreman Wesley S., and installer Abdul W. were wonderful -- unfailingly courteous, on time, and hardworking. They kept us updated and answered our questions throughout every step of the install. We are so relieved to have the job done, are looking forward to enjoying our guaranteed dry basement, and would happily and unreservedly recommend JES to anyone looking for peace of mind and freedom from worry about water in their basement."
Protect Your Basement
Correct Your Wet Basement
Waterproof Your Basement
Protect Your Concrete
Polyurethane Foam Injection

+12

532 neighbors recently requested a quote
Recommended by84%of homeowners
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Basement Waterproofing FAQs, answered by experts

When hiring a basement waterproofing pro in Frederick, look for experience with local soil movement and knowledge of regional moisture control challenges. Ask for references from nearby homes and make sure they’re familiar with Frederick’s seasonal rainfall patterns. Confirm they carry insurance for water damage and understand the area’s drainage regulations. Choosing a contractor with expertise in sump pump installation is also important.

Helpful?

In Frederick, you can address small basement waterproofing issues by sealing hairline cracks with hydraulic cement on dry days and keeping gutters clear to direct water away from your foundation. Use a dehumidifier to control indoor moisture and ensure crawl spaces are well-ventilated. If you notice cracks wider than a quarter inch, standing water, or electrical hazards, contact a local foundation repair specialist promptly.

Helpful?

In Frederick, basement waterproofing is often needed for foundation walls and floors, especially where clay soils and freeze-thaw cycles cause shifting or cracks. Window wells in split-level homes and crawl spaces in newer neighborhoods can collect moisture. Homes near Monocacy River or with older stone foundations are also prone to seepage. Regularly inspecting these areas helps prevent foundation repair issues and long-term water damage.

Helpful?

For Frederick’s climate, exterior foundation walls benefit from flexible waterproofing membranes and elastomeric coatings. Install perforated PVC drain pipes surrounded by gravel for effective drainage. In crawl spaces, use a thick vapor barrier and closed-cell spray insulation to block moisture. Polyurethane sealants are best for foundation crack repair, and a battery backup sump pump helps protect against power outages during local storms.

Helpful?

In Frederick, basement waterproofing maintenance should include clearing gutters and downspouts before heavy rain, inspecting sump pumps each spring, and checking for new cracks after winter thaws. Monitor humidity levels with a dehumidifier during summer, and keep window well drains free of debris. It’s also wise to check that soil slopes away from the foundation and schedule professional moisture control inspections every few years.

Helpful?

The Frederick, MD homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.