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Verified Reviews for Foundation Repair pros in Williston, SC

*The Angi rating for Foundation Repair companies in Williston, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

*The HomeAdvisor rating for Foundation Repair companies in Williston, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

Last update on November 28, 2025

Find Foundation repair specialists in Williston

Avatar for Mount Valley Foundation Services

Mount Valley Foundation Services

4.61(
145
)
•Approved Pro

Mount Valley Foundation Services

4.61(
145
)
•Approved Pro
Customers say: Super punctual
32 local quotes requested
39 years of experience

Established in 1986, Mount Valley Foundation Service stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of South Carolina, we bring our local expertise closer to you. MVFS proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At MVFS, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!

"These guys are AWESOME! The work was completed in a timely manner and was completed accurately."

Kayleigh S on September 2025

Established in 1986, Mount Valley Foundation Service stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of South Carolina, we bring our local expertise closer to you. MVFS proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At MVFS, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!

"These guys are AWESOME! The work was completed in a timely manner and was completed accurately."

Kayleigh S on September 2025

Crawlspace Medic - Augusta

5.00(
6
)

Crawlspace Medic - Augusta

5.00(
6
)
Customers say: Quick response
Free onsite estimate

We specialize in moisture control for crawlspaces and basements. Our team of professionals use the highest quality products and are focused on getting projects done in a timely manner with you, the customer in mind. Vapor barriers Crawlspace encapsulations Dehumidifiers Subfloor insulation Sump pumps and interior drains Fungal treatments Wood repair (moisture and termite damaged)

"Crawlspace Medic - Augusta recently worked on our crawlspace. We were having moisture and water issues, a moisture barrier we previously put in had almost disintegrated, and originally-installed insulation was falling down. Kevin did a thorough inspection and gave me a comprehensive estimate, and his crew arrived timely and went right to work. They constructed a French drain within the crawlspace to drain off any water that would collect under the house, installed new insulation between all floor joists in the crawlspace, and installed a new, white 10-mil vapor barrier throughout the crawlspace. They taped over the seams and spiked the vapor barrier. We had previously installed an exhaust fan. They cleaned up the debris, and the crawlspace looks better than it ever has since we built our home in 1996. They worked continuously and did an excellent job. Tanner was very conscientious and came back to finish up. We are very pleased with the work they did on our home and feel so much better and secure about our crawlspace."

Gary S on September 2020

We specialize in moisture control for crawlspaces and basements. Our team of professionals use the highest quality products and are focused on getting projects done in a timely manner with you, the customer in mind. Vapor barriers Crawlspace encapsulations Dehumidifiers Subfloor insulation Sump pumps and interior drains Fungal treatments Wood repair (moisture and termite damaged)

"Crawlspace Medic - Augusta recently worked on our crawlspace. We were having moisture and water issues, a moisture barrier we previously put in had almost disintegrated, and originally-installed insulation was falling down. Kevin did a thorough inspection and gave me a comprehensive estimate, and his crew arrived timely and went right to work. They constructed a French drain within the crawlspace to drain off any water that would collect under the house, installed new insulation between all floor joists in the crawlspace, and installed a new, white 10-mil vapor barrier throughout the crawlspace. They taped over the seams and spiked the vapor barrier. We had previously installed an exhaust fan. They cleaned up the debris, and the crawlspace looks better than it ever has since we built our home in 1996. They worked continuously and did an excellent job. Tanner was very conscientious and came back to finish up. We are very pleased with the work they did on our home and feel so much better and secure about our crawlspace."

Gary S on September 2020

MoistureTech Consulting

No reviews yet

MoistureTech Consulting

No reviews yet
35 years of experience

My primary business is consulting on buildings that have construction defects that allow moisture intrusion, rot, mold, etc. I also work with builders on new buildings to assist in the sequencing and selection of products to prevent moisture intrusion, promote long-term building performance, ie., concrete curing, roof flashing, window and door installation, moisture barriers, basement waterproofing, etc.

My primary business is consulting on buildings that have construction defects that allow moisture intrusion, rot, mold, etc. I also work with builders on new buildings to assist in the sequencing and selection of products to prevent moisture intrusion, promote long-term building performance, ie., concrete curing, roof flashing, window and door installation, moisture barriers, basement waterproofing, etc.

Avatar for American Construction Inc

American Construction Inc

No reviews yet

American Construction Inc

No reviews yet
47 years of experience

American Construction Inc is a masonry and concrete contractor serving residential, commercial and government clients in the greater Charleston, SC area. We work on any masonry or concrete project, including: Brick, Block, Stone, Concrete Flatwork like driveways, parking areas, loading docks, curbs, slabs, Poured Concrete Footers, Foundations, also Room Additions. We have over 36 years of experience in the Charleston Lowcountry area. American Construction Inc is Department Of Transportation certified and also a GSA certified contractor.

American Construction Inc is a masonry and concrete contractor serving residential, commercial and government clients in the greater Charleston, SC area. We work on any masonry or concrete project, including: Brick, Block, Stone, Concrete Flatwork like driveways, parking areas, loading docks, curbs, slabs, Poured Concrete Footers, Foundations, also Room Additions. We have over 36 years of experience in the Charleston Lowcountry area. American Construction Inc is Department Of Transportation certified and also a GSA certified contractor.

L&O Outfitters, LLC

No reviews yet

L&O Outfitters, LLC

No reviews yet
20 years of experience

From new space construction, landscaping to annual building maintenance, L&O has the solution for any size commercial or residential project - from a single unit tilt-up to a large commercial complex. A commercial building or single family home must serve two purposes: protecting the building from weathering and decay; and a look that’s simply great. L&O also specializes in the application of protective coatings that are extremely resistant to nature’s elements and can endure high traffic, yet still provide an aesthetically pleasing look. Another goal at L&O Outfitters is to provide you with a complete range of maintenance and home repair services. We currently have 10 employees with several experienced tradesmen. We strickly do sub-contracting and our billing procedures are negotiable.

From new space construction, landscaping to annual building maintenance, L&O has the solution for any size commercial or residential project - from a single unit tilt-up to a large commercial complex. A commercial building or single family home must serve two purposes: protecting the building from weathering and decay; and a look that’s simply great. L&O also specializes in the application of protective coatings that are extremely resistant to nature’s elements and can endure high traffic, yet still provide an aesthetically pleasing look. Another goal at L&O Outfitters is to provide you with a complete range of maintenance and home repair services. We currently have 10 employees with several experienced tradesmen. We strickly do sub-contracting and our billing procedures are negotiable.

Evolution In Action Remodeling & Foundation Repair

2.40(
5
)

Evolution In Action Remodeling & Foundation Repair

2.40(
5
)
28 years of experience

Our methods for Floor and Foundation Repair is proven and tested to be superior to all other repair methods used by other companies. We specialize in - Crawlspace Foundation Repairs, Pier and Beam Foundation Repair, Stem Wall Foundation Repair, Sagging Floors and Foundations, Water Damage, Termite Damage, Foundation Settling, Sub Floors, Joist, Beams, Sills, Piers, Jacking and Leveling, Footings, and Girders.

Our methods for Floor and Foundation Repair is proven and tested to be superior to all other repair methods used by other companies. We specialize in - Crawlspace Foundation Repairs, Pier and Beam Foundation Repair, Stem Wall Foundation Repair, Sagging Floors and Foundations, Water Damage, Termite Damage, Foundation Settling, Sub Floors, Joist, Beams, Sills, Piers, Jacking and Leveling, Footings, and Girders.

Showing 1-10 of 17
Foundation Repair questions, answered by experts

You’ll need to reseal the foundation every five to 10 years, depending on the sealant you’ve used, the moisture conditions present in and around your home, and the condition of your foundation. Having a foundation inspection conducted before reapplication can help you catch any problems before you begin resealing. Of course, if you notice any new leaks or other moisture problems at any time, it may be necessary to reseal the foundation sooner.

Foundation settling is normal and expected if just a small amount of settlement occurs within a year or so after construction. This usually results in hairline cracks in the foundation, which aren’t typically a problem. If settlement occurs years after construction, unevenly under your home, or results in signs of structural damage, then it could be very serious. Foundation stabilization and drainage system installation to fix unnatural settlement can cost tens of thousands of dollars and compromise the structural integrity of your entire home.

The best foundation repair method will depend on the issue you’re having, but usually, foundation instability is best fixed using supportive piers, like steel piers or helical piers. A professional foundation repair contractor or structural engineer should always decide what the best course of action is, and even then, it’s imperative that you also take measures to treat the underlying issue as well, like soil erosion or oversaturation from runoff.

It’s usually not an immediate safety risk to live in a house with foundation problems, but you don’t want to let those problems persist. Most foundation issues don’t lead to a house’s sudden collapse, but they can lead to health issues like mold growth and pest intrusion, as well as problems like uneven floors or rotten beams and joists, which can pose injury risks and be costly to fix.

Yes, sustainable mixes and sealants minimize environmental impact.

The Williston, SC homeowners’ guide to foundation repairs

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

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