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TRUSTED BY POTOMAC, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon187
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Potomac

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 Potomac, MD and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"I needed to address a problem in one corner of my basement before an appraiser came in for a refinance that was in process. I was very appreciative of the companies that responded and fit me into their busy schedules on very short notice. Jason from A Action Waterproofing came by to give me an estimate for basement waterproofing. Two days earlier another company quoted $5,200 -- they would dig up a large bush and 2 smaller plants I had had for years to put in two protective layers (one plastic, one asphalt) for my exterior basement wall, then replace the dirt and mulch. At this point, I was just hoping for a lower quote. Jason let me know 3 hours before his scheduled arrival that he would be running about 1-1/2 hours late because he needed to take his daughter to an appointment, and asked if that would be OK. I certainly respect anyone who puts family first, so it was not a problem. As soon as Jason arrived we went to the basement. He said water was not leaking in and there was just discoloration on the floor with some on the lower wall. All that was needed was to clean the walls, apply hydraulic cement where the floor meets the wall, then paint with DryLok, and I could do that myself. I already had a can of DryLok that had never been opened. He said there was no damage to the interior and exterior walls. He did that during heavy rains there was one location where the downspout from my roof connected to the drain pipe that left my property where water could be released onto the ground, which should be addressed. I was so happy with his diagnosis that I wanted to pay for his call, but he refused. I'll take care of this before the appraiser arrives end of the week. Now just need to see what the appraiser says."
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+17

Response time9 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Brother's Waterproofing, LLC
Brother's Waterproofing, LLC
4.8(
43
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Potomac, 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 rate89%
34 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 Potomac, 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
29 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 Potomac, 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
23 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Basement Gurus, LLC
Basement Gurus, LLC
4.7(
211
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - RepairBasement Drainage Channels - Install

Serving Potomac, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Warranties offered

"From start to finish this company gets things done the right way. I would highly recommend to anyone needing any type basement work done especially waterproofing. These guys are the best in the business! Thank you Basement Gurus for my dry basement."
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
750 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for AFFORDABLEBASEMENTWATERPROOFING.COM INC
AFFORDABLEBASEMENTWATERPROOFING.COM INC
4.0(
108
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Potomac, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"The entire Affordable Basement Waterproofing team are exceptional. From Monica and Kelly in the office to the Inspector, Ken, and the 3 exceptional gentlemen who came to our house to fix our Basement Foundation Leak; this is one of the most professional, helpful home repair / improvement teams that have ever done work on our home. Thanks a million Affordable Basement Waterproofing."
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 Potomac, 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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Basement Waterproofing questions, answered by experts

As the first layer of water protection for your roof deck and the building materials below, underlayment is designed to prevent water damage, so it’s okay if it gets wet. However, you shouldn’t rely solely on underlayment for protection. If rain interrupts your roof project and you have all of the underlayment down, you’ll likely be fine, but you should install shingles over that layer as soon as possible, as long-term exposure can lead to water damage.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

The primary reason homes have crawl spaces is so the foundation can reach down below the frost line to avoid dangerous soil movement and structural damage when the ground freezes. They’re more popular in colder climates where the ground freezes down to a few feet, and slabs are most popular in warmer areas where there is no frost line. Crawl spaces also provide a space for utility lines to run where they’re at less of a risk of freezing.

When doing any type of project involving mold, it's important to wear the right protective gear. You'll want an N-95 or KN-95 mask to keep yourself from inhaling mold spores, which can be irritating or trigger an allergic reaction in people with weakened immune systems. You'll also want to wear protective eyewear and gloves to limit your contact with mold.

A crawl space is an area under the house that provides access to plumbing, electrical, heating ducts, and other HVAC units. Its purpose is to create a buffer between the ground and the living area, helping with ventilation, moisture control, and access for maintenance or repairs. Crawl spaces are most often seen in houses in North America which are built on concrete foundations versus other parts of the world where buildings are constructed differently.

The Potomac, MD homeowners’ guide to basement waterproofing services

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