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Best basement waterproofing pros near Irmo, SC

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    Verified basement waterproofing services reviews

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

Avatar for Groundworks
Groundworks
4.4(
341
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Irmo, SC and surrounding areas

Approved (Corporate)

In business since 1986

Free estimates

Emergency services offered

"The team, led by Trevor, and assisted by Kenny, Terrell and Garrett, worked very well together to accomplish the work we needed done to alleviate water coming into our crawlspace. They were courteous, friendly, professional, and did not hesitate to answer all our questions and explain the process thoroughly. Trevor and team brought other problems to our attention which we have decided to have Mount Valley repair also. Trevor and Shawn helped us get the process going to replace floor joist damaged by water. I would recommend Mount Valley if you have foundation issues that need expert repairs!"
Foundation
Foundation
Foundation
Foundation
Foundation

+13

Response time1 day
99 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Reds Plumbing
Reds Plumbing
4.7(
38
)
Basement Drainage Channels - Install

Serving Irmo, SC and surrounding areas

Approved

Super Service Award Winner

Emergency services offered

Warranties offered

Credit card accepted

"Cody was fantastic. He showed up on time for what was suppose to be a small job but turned into a much bigger one due to the issue being more serious. He stayed until the job was done even working in the rain. When he was done the cost was slightly more than the initial estimate because the job was much bigger. Even then the price was extremely fair. He is local to the Lexington area and enjoys what he does. He wore shoe covering when he entered my house and left no mess and was extremely respectful. I urge everyone to give Red’s Plumbing a chance. You won’t regret it."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+14

Recommended by62%of homeowners
Avatar for Cantey Foundation Specialist
Cantey Foundation Specialist
3.6(
97
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Irmo, SC and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"I selected Cantey over Mount Valley, Ramjack and CNT. The reasons I selected them were: price, personnel, and they offered Poly Leveling for my garage floor. Mount Valley price matched and offered poly leveling, but, I was not impressed with their personnel. I believe Ramjacs Helical Pile is better than Canteys jacks, however they would not price match, and they did not offer poly leveling. Even with price matching the cost for this work is exorbitant."
WE ARE ONE TEAM
Rotten Wood Replacement
One Team Meeting
Awards
The Gutter Shutter System

+37

Response time2 days
Response rate97%
49 neighbors recently requested a quote
Avatar for Crawl Space Brothers- SC
Crawl Space Brothers- SC
3.4(
5
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Irmo, SC and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

Crawl Space Brothers is a trusted family-owned company proudly serving Columbia, SC, and nearby areas, including Irmo, Lexington, Cayce, Forest Acres, Seven Oaks, Sandhills and West Columbia. We specialize in crawl space encapsulation, crawl space repair, waterproofing, vapor barrier installation, moisture remediation, mold removal, sump pump installation, drainage systems, and foundation repair. Our tailored services protect homes from water, humidity, mold, and structural damage. Backed by years of experience, advanced techniques, and our 5-Star Experience with lifetime warranties, we provide reliable, long-lasting results you can trust. Schedule a free inspection today and see why Columbia homeowners rely on Crawl Space Brothers.

Crawl Space Brothers
Crawl Space Brothers
Crawl Space Brothers
Crawl Space Brothers
Crawl Space Brothers

+2

1 neighbors recently requested a quote
Avatar for All Dry Of The Carolinas Inc
All Dry Of The Carolinas Inc
4.3(
48
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Irmo, SC and surrounding areas

In business since 1991

Free estimates

Credit card accepted

"The workers were outrageously good. The guy that did the estimate was under what it should have been and it cost us double the amount, but the guys who did the work were fabulous and made it work. It cost more, but the basement does not have a smell or anything, so I can't blame them for it. They were done in a week. I was embarrassed, there wasn't a speck of dirt when they were done. It was clean as a whistle, and it wasn't like that when they walked in. They were really good. They recommended an electrician, and so even if they didn't do some part, they support you and help you find them. They check up and make sure everything is okay. They call back every time you call them. They did a great job."
Additional Photos
Extension
Multiple extensions
Underground extension with outlet
Before

+4

Recommended by90%of homeowners
Avatar for Crawlspace Medic
Crawlspace Medic
4.8(
48
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Irmo, SC and surrounding areas

In business since 2013

Credit card accepted

"Life Savers!! We live in an older house with a very small bathroom. We had a home inspection recently and were altered to some major subfloor, sill and joist damage. We knew it was in rough shape but the inspector used terms like “100% moisture and “previous repairs poorly completed”. I called a few other contractors and remodel companies that started to throw around some huge numbers and timelines to make the repairs. The consensus from them was the tub would have to be removed before they could do any subfloor repairs. In a house with one shower that wasn’t really an option for us. I saw the reviews for the Crawlspace Medic and decided to give them a call. It was the best decision I could have made. Sharon, Paul and Stanley were great; they made the process very easy and efficient from the initial phone call to the installation. Paul came out to do the initial visit (11/14) and assured me he had seen much worse and his company had developed methods to do all the necessary repairs from underneath the house leaving the current bathroom intact. The quote arrived the same day and was extremely reasonable. They got us on the schedule right away (11/20) and on the day of the repairs Nick and his crew arrived on time and were very professional. The job was scheduled for two days but they completed it in one and did a great job. We no longer have to worry about falling through the floor. They also provide a follow up inspection in 90 days and informed us of a couple other minor leaks that were noticed while completing the repairs. Crawlspace medic is a great company and I would 100% recommend them to anyone needing their services."
Recommended by90%of homeowners
Avatar for Vapor-X Crawlspaces
Vapor-X Crawlspaces
5.0(
7
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Irmo, SC and surrounding areas

In business since 2023

Free estimates

Emergency services offered

Will beat any competitors crawlspace waterproof pricing! \n\nDo you have moisture in your crawlspace? High energy bills? Want to better the air quality in your household? We can help you! What Vapor-X Crawlspaces brings is a moisture free zone in your crawlspace. Most homeowners spend 70 percent of their lives in their homes, so having a healthy air quality at home is essential for many health reasons. The services we provide are: encapsulations, vapor barriers, dehumidifiers, sump pump, interior and exterior French drain systems, crawlspace clean outs, fresh air systems, and moisture remediation. My name is Sean Williams, I am the founder and owner of Vapor-X Crawlspaces and have been serving homeowners like you for over 6 years. I truly believe making a healthier home is a healthier lifestyle. We are known for an unparalleled commitment to customer satisfaction. With our efficient work and smaller company size, we are able to provide quality services at a fraction of the cost of larger companies. We also offer payment plans so you can get your project completed ASAP. Call NOW for a free inspection and let us impress you.\n

Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project

+42

Recommended by100%of homeowners
Showing 1-10 of 43
Basement Waterproofing FAQs, answered by experts

Plan on cleaning your crawl space at least once a year, though twice a year is ideal. During the cleaning, remove any debris or dust and check for potential issues like pest infestations or water damage. The sooner you catch these issues, the easier (and cheaper) it will be to fix them.

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.

Yes, engineers assess soil load-bearing capacity and provide construction guidelines.

A vapor barrier keeps moisture out of the crawl space, while insulation reduces the amount of unconditioned air—and sometimes moisture—that enters the space. Coupling a vapor barrier with insulation can help prevent humidity and related moisture damage in a crawl space while also making your home more energy-efficient. Just be sure to use insulation that won’t get damaged from moisture, like rigid foam board or expanding spray foam insulation.

A walkout basement is considered to be partially below grade because at least one wall is entirely exposed. In some cases and in specific municipalities, inspectors and appraisers will still count walkout basements as below grade, which means the space can’t serve as living space or be rented out. If you intend on using the area as living space or a separate apartment, you should check with your local building department to make sure it’s legal to do so.

The Irmo, SC homeowners’ guide to basement waterproofing services

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