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Best basement waterproofing pros near Thomas, WV

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

Avatar for Alford Foundation and Crawl Space Repair
Alford Foundation and Crawl Space Repair
3.7(
120
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Thomas, WV and surrounding areas

Approved

In business since 1963

Free estimates

Emergency services offered

"Alford had waterproofed my basement 2 years ago & I've been very pleased with that project. This time, a mouse had gotten in thru an open garage door when weather started getting cold, and had found a hole in a cinder block wall and had babies! I had already trapped and killed 5 before calling Alford. The rep was very polite, professional, knowledgeable, etc. He quoted me a price which was very reasonable but I decided to wait & see...it's been 6 days since last one killed & I still have traps set throughout the house but if I have any further issues, I would not hesitate to call Alford!"
Encapsulation and Waterproofed Crawl Space
Dirty crawl space with improper lining
CleanSpace Liner and SmarJacks
CleanSpace Liner
Dirty, vented crawl space

+5

Response time1 day
131 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Machen Home Improvements
Machen Home Improvements
4.0(
77
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Thomas, WV and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"Jodie Machen is an outstanding workman and job manager. Our home is a old steel-baron era mansion from 1929. It needed a new roof and significant association flashing work. Jodie Machen was the perfectionist I was looking for. Not only did he do an immensely careful job, but he was thorough in his communication with me throughout, calling to touch base not just on formal aspects of the job, but also on convenience questions. His personal presence on the job made sure that his standards translated to his work crew, and together they presented a polite and professional group who I felt very happy to have around my little kids. I would unhesitatingly recommend this company! As an aside, Jodie Machen also fixed a difficult plumbing problem for us, so I suppose he would be great for other similar work as well!"
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+117

Recommended by90%of homeowners
Mendoza Construction
5.0(
1
)
Basement Drainage Channels - Repair

Serving Thomas, WV and surrounding areas

In business since 2005

Free estimates

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. \n \n

Response time1 day
W & W Excavating, LLC
New to Angi
Basement Drainage Channels - Install

Serving Thomas, WV and surrounding areas

In business since 2010

Free estimates

Credit card accepted

W & W Excavating, LLC focus on quality services over quantity. We use our years of experience and expertise to complete your project with perfection. Customer service and honesty are the most important aspects of our business and your satisfaction is guaranteed. Please call us today for an estimate. We look forward to working with you.

J&S Excavating
New to Angi
Basement Drainage Channels - Install

Serving Thomas, WV and surrounding areas

In business since 2025

Free estimates

We take great pride in our experience, expertise, quality, and customer service provided to meet your needs. It is our mission to exhibit excellent workmanship and supreme dedication from start to finish of a project. We understand the needs and expectations of our customers, and take great care to work and communicate with them in a courteous and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job. \n

Diamond K Excavating
New to Angi
Basement Drainage Channels - Install

Serving Thomas, WV and surrounding areas

In business since 2020

Credit card accepted

Offers commercial services

We're a locally owned and operated company with over 30 years of industry experience. We value honesty and integrity, and stand behind our work. We specialize in Demo, tree removal, excavation major and minor, building site.. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction! Estimates are not free. Sundays are premium rates.

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Basement Waterproofing FAQs, answered by experts

In most cases, yes, because the large majority of basements leak or will have moisture issues at some point, and waterproofing methods can mitigate that risk or eliminate it entirely. Plus, water and moisture issues can be quite problematic, as they can lead to mold growth, rotting of building materials, structural damage, poor indoor air quality, increased electric bills, and other problems.

Mold and mildew are the things in basements that actually cause the musty odors, but moisture is the underlying issue that causes mold and mildew growth. Addressing moisture and water problems and then removing materials that are moldy are some of the best ways to get rid of the musty odors. Preventive measures after that—like installing air fresheners and a dehumidifier—can help keep musty odors from returning.

No, your basement dehumidifier doesn’t need to be on 24/7. While it’s an excellent tool for tackling damp, musty air, especially in humid seasons, leaving it running nonstop can backfire. Over-drying the space can mess with your sinuses, warp wood, and even crack certain materials. Instead, only use your humidifier when moisture levels rise above 50%, and then give it a break when the humidity levels drop.

It depends on what caused your basement flooding, the extent of the problem, and the risk of the flood continuing. If your flood is coming from a septic system or sewer line, breathing in the sewer gasses can be dangerous, so you should vacate. If the flood occurs from an ongoing natural disaster, relocating to a safe area might be wise. If you just have a plumbing leak or rainwater coming in, you can likely stay in the house if you don’t have electrical lines down there, but make sure you call in professionals to fix the issue immediately.

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 Thomas, WV homeowners’ guide to basement waterproofing services

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