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Avatar for Groundworks
Groundworks
4.4(
341
)

Serving Williston, SC and surrounding areas

Approved (Corporate)

In business since 1986

Free estimates

Emergency services offered

"Mount Valley is the epitomy of an honest, fair, reliable, efficient, professional, and customer service oriented company. Our coordinator, Ryan McAlister, was extremely knowledgeable and informative during inspection of our crawl space water issues, and his subsequent repair recommendations. Ryan was like a professor explaining retrofitting encapsulation of the crawl space and basement water issues with a slab, along with discussing such encapsulation during a new build vs. standard floor insulation in a crawl space in a climate above 60% humidity. Fascinating and educational discussion for me as an homeowner with very limited knowledge of the subject. Ryan was patient and is truly an expert. He also provided additional advice on other ground water issues and recommendations for us as homeowners to try, outside the crawl space, in order to save us money. His crew was extraordinarily hard working and diligent, personable and friendly. They did a great job in every detail relative to trench digging, gravel, wrapping, wall insulation, sump pump, dehumidifier, and drainage. Very well done and much appreciated professionalism and expertise. Very impressed with the coordinated team work demonstrated by the whole crew, Damian (foreman), Mac, and David. Very impressive young men. My wife wanted to adopt them and Ryan upon completion of the project, which was done in grueling heat, humidity, and wet conditions. Job well done. Great company. Joe Morrash - Irmo, SC"
Foundation
Foundation
Foundation
Foundation
Foundation

+13

Response time1 day
92 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Direct Services Plumbing & Drain, Inc
Direct Services Plumbing & Drain, Inc
4.9(
54
)

Serving Williston, SC and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Emergency services offered

Warranties offered

"Ethan was very professional and worked the entire time he was here. The work is guaranteed for 90 days. I am pleased with the repairs. Be aware that there will be a service call fee and job fee and a per hour charge."
We install water heaters, tankless heaters, gas, and electric.
We have over 35 years in the drain cleaning field.  That's a lot of experience that you can count on!
Water Heater Installation
Shower drain slow?  No problem! Give us a call!
Clogged Drain? We can help!

+22

Response time11 hrs
Response rate88%
10 neighbors recently requested a quote
Avatar for Southeast Plumbing & Gas, LLC
Southeast Plumbing & Gas, LLC
4.5(
55
)

Serving Williston, SC and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"He tried to see if the water heater could be repaired, but it was too damaged from rust. He replaced it with a new one with a six year warranty. He protected the floor with plastic from possible leaks before he removed it and was careful to clean everything up before he left. He also made sure it was working before he left. He was very nice."
Multiple LP Gas Line Installation
Underground natural gas line
Underground natural gas line installation
Septic Systems Service and Usage
Water Filtration & Softeners Project

+85

Recommended by96%of homeowners
Avatar for CNT Foundations
CNT Foundations
4.5(
37
)

Serving Williston, SC and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"They didn't end up doing the work. They were really high on what they wanted to do. Other people who looked at the porch said that it was not causing an issue with any water intrusion and that there doesn't seem to be any signs on the posts that this could have been recent, it could have been long ago. So no work was done. It was a front porch that had just the level concrete on one side was dipping just a little bit. I think they were going to pump it up from underneath or something like that to level it out. I would say that their response time and their professionalism of getting the quote to us on a timely manner was good. The quote was high and yet the work was not necessary according to other quotes. They should be honest to say when repairs are necessary and when they are not. The guy who showed up was nice and professional and was on time. There was a decent response time."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+270

Recommended by84%of homeowners
Avatar for Cantey Foundation Specialists
Cantey Foundation Specialists
4.0(
32
)

Serving Williston, SC and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Everyone we dealt with from Cantey Foundation Specialists were very professional, timely, and caring throughout the entire process from job estimate to the actual work done. While the work done did not bring all areas back completely to their original states, with the exception of one area, they were all pretty close. Realistically, It's very difficult to fix in two days what has taken place over a period of years. I am very satisfied with the job done. Grayson (job estimator) and Estevan (crew leader) were very helpful and great to work with through the entire process."
Before PolyLevel LIft
New Gutter Shutter System
Concrete Before Columbia, SC
Driveway Level & Lifted
This is just one of the foundation cracks we found on this foundation. It's what we call a stair-step crack.

+137

Recommended by90%of homeowners
Avatar for The Fireplace Doctor
The Fireplace Doctor
3.9(
1,190
)

Serving Williston, SC and surrounding areas

In business since 1993

Emergency services offered

Credit card accepted

"Bought this in the spring to use before burning in the fall/winter.  Ended up moving in December and did not use it.
I'm wasn't sure how to score a company I didn't use (and not reviewing isn't really an option), so I just picked a score consistent with the average rating.
"
Recommended by78%of homeowners
Avatar for CNT Foundations, LLC
CNT Foundations, LLC
3.9(
67
)

Serving Williston, SC and surrounding areas

In business since 2004

Free estimates

Warranties offered

"Good work at a good price. and they scheduled it according to my needs. My floors were bouncing and cold and they repaired and insulated the whole thing for less than some wanted just for the repairs"
Chimney Repair
Response time1 day
Recommended by81%of homeowners
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Basement Waterproofing questions, answered by experts

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.

Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. The chances of mold developing depend on several factors, including the severity of the damage and how quickly the area is cleaned and dried. To prevent mold, you must act quickly—ideally within the first 24 hours. Clean up all water and thoroughly dry the affected area. If the damage is extensive, you were unable to address it immediately, or you suspect mold has already started to grow, it is best to assume it is present and hire a professional mold inspector or removal expert to assess the situation.

The best ventilation for a crawl space is a fully encapsulated crawl space with its own separate ventilation system. If you go this route, ensure you have the proper crawl space code requirements done and dusted before encapsulating your crawl space with a moisture barrier and installing appliances that may not be up to the proper specs.

If you decide to fill the space around your home’s foundation with landscaping materials, it’s important to consider the aesthetic as well as technical factors like drainage and protection from pests and the elements. Materials such as gravel, rubber mulch, concrete, and brick masonry are all good options.

The Williston, SC homeowners’ guide to basement waterproofing services

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