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TRUSTED BY HARMANS, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon176
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Harmans

Avatar for AA Action Waterproofing Inc
AA Action Waterproofing Inc
4.7(
383
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Harmans, 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%
Recommended by92%of homeowners
Avatar for Guardian Basement Waterproofing
Guardian Basement Waterproofing
4.5(
23
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Harmans, MD and surrounding areas

Approved

In business since 1984

Free estimates

Warranties offered

"Joel and his crew did a fantastic job. I really appreciated Joel's professionalism and thoughtfulness when he evaluated the problem and formulated the most effective solution. The work was done in a timely and efficient manner. And the best part it is, that I no longer have water in my basement despite many periods of very heavy rain. I also had Guardian waterproof the basement in my former house with similar positive results. I recommend them to the highest extent!"
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Response time1 day
6 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Brother's Waterproofing, LLC
Brother's Waterproofing, LLC
4.8(
43
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Harmans, MD and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"John the owner was very professional. He explained all aspects of the waterproofing work that was to be done. Any questions we had, he answered so that we understood what was to be done. He was respectful and pleasant during the entire process. When we left messages needing to speak to John, he was prompt in returning our calls or texts. John's crew was also professional and resp0ectful. They were thorough in performing the waterproofing job as John had explained it. The work was completed within the timeframe. The crew did a great job on the waterproofing as well as cleaning up the areas. We are very pleased with the completed. There has been an extremely heavy rain for an extended period of time since the work was completed. I can honestly say the water problem is no longer an issue--basement is totally dry. We believe we made the best choice in choosing John's company, Brother's Waterproofing, LLC, to do the work,"
Brother's Sub Floor Drain System
Sump Pump
Stairwell Rebuild
Stairwell Rebuild
Stairwell Build

+1

Response time1 day
Response rate88%
16 neighbors recently requested a quote
Avatar for Quality 1st Basement Systems, Inc
Quality 1st Basement Systems, Inc
4.6(
230
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Harmans, MD and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"We are currently happy with the basement waterproofing and remodeling that was completed! There were issues - most minor but we haven't anything to compare as this was the first-time having contractors complete basement work for us; and our home is almost 100 years old. They were flexible given unexpected issues that came about with the basement. The water proofing was done first and they did a great job. They were happy to review and resolve any remaining questions/concerns and/or issues. Jorge in the service dept. is professional, punctual and is a great representative and asset for this company."
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+129

Response time10 hrs
Response rate99%
16 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 Harmans, 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."
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Response time2 days
33 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 Harmans, MD and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Jeff came to give us cost estimate for fixing our basement leaking issue. He was one of most knowledgeable professional I ever meet during my initial move in to new house. He explained why it is leaking and what we can do about it in very detailed logical explanation with clear diagrams to assist my understanding. Jeff said to fix these issues if it still leaks than come back for further assessment. It was great help, and I can really work on source of this problem now. I will never use any other waterproofing company other than All Aspects Waterproofing, LLC."
Response time1 day
21 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Quality 1st Basement Systems, Inc.
Quality 1st Basement Systems, Inc.
4.7(
113
)
Basement Drainage Channels - InstallFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Harmans, MD and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"Was so happy with the quick and thorough work of Shawn and Gilbert in my basement. They were fast and took great care for each detail of the job. I have confidence to refinish my basement now! I would highly recommend them and Basement Systems for all your waterproofing needs!"
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Tough day
Found it in a crawlspace
What is it?
Found it in a crawlspace

+142

Response time1 day
Recommended by88%of homeowners
Avatar for AFFORDABLEBASEMENTWATERPROOFING.COM INC
AFFORDABLEBASEMENTWATERPROOFING.COM INC
4.0(
108
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Harmans, 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 Harmans, MD and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Best Buy Waterproofing did a great job servicing our basement. The workman wore masks and were very aware of COVID-19. I would recommend them to anyone! The quality of their work was exceptional."
Response time2 days
5 neighbors recently requested a quote
Recommended by98%of homeowners
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Showing 1-10 of 172
Basement Waterproofing questions, answered by experts

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. Whether mold develops depends on several factors, including the severity of the water damage and how quickly the area is addressed. To prevent mold, you must act fast—ideally within the first 24 hours. The process involves cleaning up all standing water and thoroughly drying the affected area. If the damage is extensive, the cleanup was delayed, or you suspect mold might be present, it is safest to assume it has grown and contact a professional mold inspector or removal expert to assess the situation.

Regular inspections, maintaining proper grading around the foundation, and keeping gutters clear are advisable. Vapor barriers and sealants may need checking for wear after several years.

Yes, it is possible to over-dehumidify a house by removing too much moisture from the air. This can create an overly dry environment that negatively affects those with respiratory or skin issues, and may cause your skin, hair, and sinuses to feel dry. However, this is unlikely to happen with most modern dehumidifiers, as they are equipped with moisture sensors and adjustable settings. These features allow the unit to pause automatically when the desired humidity level is reached, preventing the air from becoming uncomfortably dry. In contrast, older or more basic dehumidifiers left running for too long could potentially over-dry the air. To avoid this, aim for a balance between removing excess moisture and maintaining a comfortable environment. You can often monitor your home's humidity levels using a modern thermostat for guidance.

Crawl spaces are the more desirable option overall because they provide additional space for storage and utilities, but they are more expensive to install and maintain. Slab foundations are considered a better option in warmer climates where the depth of the frost line isn’t an issue because they’re more affordable, but crawl spaces are better in areas where the frost line is deep or where flooding can be an issue.

Methods include interior sealants, exterior excavation and waterproofing membranes, sump pump installation, and vapor barriers for encapsulation. Techniques vary based on the structure and severity of moisture issues.

The Harmans, MD homeowners’ guide to basement waterproofing services

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