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TRUSTED BY GAITHERSBURG, MD HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon142
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Gaithersburg

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 Gaithersburg, 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."
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+17

Response time9 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Basement Waterproofing Nationwide Inc
Basement Waterproofing Nationwide Inc
4.6(
183
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"This was a huge job. A complete basement waterproofing - new internal drains installed and two new sump pumps installed. The guys were great - came on time worked hard all day and cleaned up after themselves. The only negative was at the completion of work when it was time to pay the amount was less than what was originally quoted. I told the guy that and he insisted that it was what he had. I even showed him the quote on paper. I paid it - glad it was less, but a few days later got a call from the office telling me I needed to pay another $1600 (the difference between the original quoted price and at the time of service price) I told her what the guy told me and she got a little rude saying "well you knew what the quoted price was" - yeah I DID know and was prepared to pay but after install HER guy insisted it was the price he had. I wasn't trying to get out of paying but the confusion on how much it costs was with the people working there. I didn't appreciate her attitude as if I was trying to skimp out of paying. Nevertheless, I ended up with this additional payment. However, the work is supposed to be guaranteed for life. No complaints there."
Additional Photos
Response time2 days
22 neighbors recently requested a quote
Recommended by92%of homeowners
All Aspects Waterproofing, LLC
4.6(
188
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Gaithersburg, 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
22 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for AquaGuard Waterproofing Corporation
AquaGuard Waterproofing Corporation
3.5(
494
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I contacted AquaGuard when I noticed signs of water in my basement. John Riley contacted me the next day and did an inspection of the area. He explained the issue and solution and within 3 days workers were on site fixing the problem. John kept in touch throughout the process. The work to dig a trench and water proof the basement was completed in 2.5 days. Iâ m very satisfied with the work and would recommend AquaGuard Waterproofing, ask for John Riley."
 Bilco Scapewell
 In-house Crews
 Effected area(s) to be excavated
Zoeller pumps
 Wonderful possibilites!

+35

Response time1 day
Recommended by86%of homeowners
Avatar for AFFORDABLEBASEMENTWATERPROOFING.COM INC
AFFORDABLEBASEMENTWATERPROOFING.COM INC
4.0(
108
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gaithersburg, 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
1 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Best Buy Waterproofing, LLC
Best Buy Waterproofing, LLC
4.4(
155
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Gaithersburg, 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
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Drainage and Erosion Solutions
Drainage and Erosion Solutions
4.2(
309
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"Working with ROBERT RECKMEYER (Project Manager) and his crew (whose foreman is RUGILLIO)-- was FABULOUS-- on every dimension! Project Manager Robert Reckmeyer's customer service exceeds the TOP of the rating scale-- due to Mr. Reckmeyer's impeccably clear and responsive communication (via email as well as phone), refreshingly clear explanations of the sequential tasks needed to externally waterproof my home, his attention-to-detail BEFORE the job started (to ensure the contract was crystal clear and complete) AND DURING THE JOB (to ensure all actions were proceeding as planned). Also, Mr. Reckmeyer instantly fixed any imperfection that occurred (with rarity) along the way. Moreover, AFTER the job was completed, my extensively landscaped property was back to beautiful-- just as Mr. Reckmeyer kept assuring me would be the case! When it downpours rain, I now feel CONFIDENT no water will penetrate my walls-- due to the STRATEGICALLY THOROUGH actions designed by Mr. Reckmeyer to keep water out (i.e., to direct water away from my home and to make my foundation walls via water-repelling paint and plastic barriers water-impenetrable)! If you want a dry home, fantastic customer service, and a highly attention-to-detail crew, call Drainage and Erosion Solutions!"
The property before we began.
First step - demolition
Regrading and Patio
Regrading and Patio
Regrading and Patio

+66

Response time1 day
Response rate100%
6 neighbors recently requested a quote
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Basement Waterproofing questions, answered by experts

For Gaithersburg’s climate, exterior waterproofing benefits from EPDM rubber membranes or modified bitumen, while interior projects often use crystalline sealers or epoxy injections. Dimpled drainage boards and bentonite clay panels help manage hydrostatic pressure. For drainage systems, opt for 4-inch perforated PVC pipe, washed gravel, and geotextile fabric. Installing a sump pump with battery backup ensures protection during power outages.

Helpful?

To keep basement waterproofing in Gaithersburg safe for your family, choose low-odor, water-based sealers and maintain strong ventilation during work. Block off work areas with temporary barriers and keep tools out of reach. If heavy equipment or excavation is involved, consider arranging for kids and pets to stay with relatives. Scheduling projects during school hours or colder months can further reduce disruptions and safety risks.

Helpful?

In Gaithersburg, foundation walls—especially those facing prevailing winds—are prone to moisture issues, as are floor-wall joints, window wells, and areas around utility lines. Homes in neighborhoods like Kentlands or near Muddy Branch often face added risks due to historic soil conditions and fluctuating groundwater. Sump pump discharge zones and below-grade entrances also frequently require moisture control attention.

Helpful?

Your Gaithersburg home likely needs basement waterproofing if you notice water stains, musty odors, or white mineral deposits on walls. Homes built before 1990, those near streams, or with finished basements are at higher risk. If your basement humidity stays above 60% or you see cracks widening over time, consider a professional moisture control assessment for peace of mind.

Helpful?

In Gaithersburg, be wary of quotes that overlook the area’s clay soil or high water table, or that offer generic solutions without inspecting your property. Avoid contractors who skip discussing permits, provide unclear warranty terms, or pressure you to commit quickly. Reliable pros will address drainage, foundation repair needs, and offer local references to back up their work.

Helpful?

The Gaithersburg, MD homeowners’ guide to basement waterproofing services

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