Top-rated basement waterproofing pros.

Best basement waterproofing pros near Friendly, MD

Enter your zip and get matched with up to 5 pros

TRUSTED BY FRIENDLY, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon234
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Friendly - 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 Friendly, 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%
4 neighbors recently requested a quote
All Aspects Waterproofing, LLC
4.6(
188
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Friendly, 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
13 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for AFFORDABLEBASEMENTWATERPROOFING.COM INC
AFFORDABLEBASEMENTWATERPROOFING.COM INC
4.0(
108
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Friendly, 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 Friendly, 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 Drainage and Erosion Solutions
Drainage and Erosion Solutions
4.2(
309
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Friendly, MD and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"They did an excellent job of waterproofing our foundation, burying downspouts, and replacing a patio to guarantee drainage away from the house. Most of our interaction was with the crew foreman. He spoke good English, showed attention to detail, and did a careful, professional job even when the weather got so hot we found ourselves urging the crew to take more breaks. They were not the cheapest bid, but worth it for the skilled workmanship. This is the second project we have hired them to do, and I would recommend them for any work where drainage is important."
The property before we began.
First step - demolition
Regrading and Patio
Regrading and Patio
Regrading and Patio

+66

Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for All in One Contractors LLC
All in One Contractors LLC
5.0(
7
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Friendly, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Juan and his team did another great job for us. They performed this necessary repair in a timely fashion and were very professional. They had to coordinate their work with the basement waterproofing people and they have no problem doing that. We intend on using this company for several other repairs in the future, and I would strongly recommend them!"
1
2
3
4
5

+101

Response time10 hrs
Response rate95%
Recommended by100%of homeowners
Avatar for Armored Basement Waterproofing, LLC
Armored Basement Waterproofing, LLC
4.1(
5
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Friendly, MD and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"From the beginning of the inital contacts with Gary, Tara, Chris and their team, to the completion of the project, Armored Basement Waterproofing,LLC has shown , in our experience, to be a very reliable company. They are client and service oriented; professional; informative in identifying and explaining the problem and solution; prompt; affordable."
Vapor Barrier
The Best Inspector in the Business
Start to Finsh
Crawlspace Encapsulation
We save what we can

+1

Response time2 days
Recommended by75%of homeowners
...
Showing 1-10 of 149
Basement Waterproofing FAQs, answered by experts

A sump pump can be added to an existing basement. To do this, you will need to use a jackhammer or sledgehammer to break up the concrete and dig a pit. You will also need to create a hole in your basement wall to run the discharge pipe through.

The most flood-resistant materials you can count on in a flood scenario are concrete, closed-cell insulation, foam insulation (also known as expandable foam), pressure-treated wood, marine-grade plywood, and ceramic tile. When a material is flood-resistant, it can withstand direct contact with floodwater for at least 72 hours without being significantly damaged.

The purpose of soffits is to circulate air, so a blocked soffit means the air in your attic becomes stagnant. This can lead to a number of problems, mostly moisture-related, that can cause damage to your health and your home. The good news is that unclogging soffits is relatively straightforward, and if your attic is easy to access, an easy DIY project.

While water in your basement is unlikely to make you sick unless it’s coming from a sewage backup, mold is likely to start to grow in wet areas within 24 hours, and mold can make you sick. According to the Centers for Disease Control and Prevention (CDC), inhaling mold spores can cause allergy symptoms, including runny nose, itchy eyes, difficulty breathing, wheezing, and itchy skin. Individuals with pre-existing respiratory issues like asthma and immunocompromised individuals are at an elevated risk of symptoms when inhaling mold spores.

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.

The Friendly, MD homeowners’ guide to basement waterproofing services

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