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Avatar for America's Basement Contractor
America's Basement Contractor
4.3(
128
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Diamond, OH and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"We had our basement waterproofed in May 2019, the crew was out for 3 days. They also did some landscape grading. It's been 1.5 years and no problem. Very professional company. If I have any questions Carl or his wife, Jayna, respond promptly. I would highly recommend ABC for waterproofing a basement."
Mold Remediation
Mold Remediation 2
Wall Anchors
Before 1
 Insulated thermal wall wrap and drainage board

+96

Response time1 day
Response rate85%
79 neighbors recently requested a quote
Avatar for DryTech Basement Waterproofing
DryTech Basement Waterproofing
4.9(
18
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Diamond, OH and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"They did a great job installing French drains and sump pump in our basement. Great communication! They changed work plan to cater to our needs and got it done in one day, staying until it was finished. Very reasonably priced!! Highly recommend!!"
BBB
Process
Spring 2026 Projects
Spring 2026 Projects
Spring 2026 Projects

+12

Response time6 hrs
18 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Highlander Waterproofing, Inc
Highlander Waterproofing, Inc
3.9(
61
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Diamond, OH and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"The Highlander Waterproofing team arrived on time. They were cordial, evaluated the the job and began work immediately. They were very professional, having the knowledge and skills to successfully complete the job. Would highly recommend Highlander Waterproofing, excellent job in reinforcing and strengthening the basement wall."
Dark, discolored block and silt
Cove area leaking and efflorescence on the block
Separating Block
Step Cracks and Discoloration
After Pic of Basement Waterproofing Project

+22

Response time7 hrs
29 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for USA Waterproofing & Foundation Services
USA Waterproofing & Foundation Services
4.1(
198
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Diamond, OH and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"USA Waterproofing services did a very good job with our basement .The workers were all professional and left the basement clean and also they explained the way the work was done. Steve, the president of the company even gave his cell no. to me just in case I have problem. I could recommend them to my friends anytime."
 Installation of Interior Waterproofing
 Trench for exterior drain system
 Interior System before Gravel and cement
Trench for Exterior Drain System
 Interior Waterproofing

+15

Response time1 day
104 neighbors recently requested a quote
Recommended by84%of homeowners
All County Drainage Contractors
4.8(
199
)
Basement Drainage Channels - Install

Serving Diamond, OH and surrounding areas

Approved

In business since 1980

Free estimates

Warranties offered

"Excellent - Josh, Mark, and the team tore out 3 feet of concrete floor to replace the base of the stack pipe then worked their way up. Project took 2 days, first floor was completed and back on line the first day. Second floor and cleanup was done the second. 100 year old home so none of the old plumbing was easy to access. Very happy with results and with the professionalism of his team."
Response time7 hrs
Response rate100%
Recommended by97%of homeowners
Avatar for Healthy House Systems
Healthy House Systems
5.0(
17
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Diamond, OH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I had a pretty bad flood in my basement after the heavy storms that came through back in June. I realized that my sump pump was the reason so I needed to replace it. I wanted something with more horsepower and after doing some research, I decided an ejector pump would work best for my home. Tyler was very friendly and understanding of my situation. He told me about some options, gave me the literature and a fair price for what I wanted. He and his team were very professional and attentive and definitely knowledgeable about the equipment and installation process. I was a little apprehensive about going with a company that’s just starting out, but Tyler gave me a good feeling about their company and products. I’m very happy with the installation and the service I received. I wouldn’t hesitate to contact them again (although I hope I never have to) for any future needs. We have multiple rental properties, so I would call him first if I ever need service at any of them. A+++"
Bowed Wall
Interior Drainage System
Interior Drainage System
Interior Drainage System
Structural Bracing

+10

Response time1 day
Response rate98%
22 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.2(
929
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Diamond, OH and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1999

Free estimates

Warranties offered

"I wish I had hired them first! I hired another company to fix my moving bowed and shearing basement walls. They were primarily a waterproofing company, but said they had the solutions to my issues. 3 months after they were complete, my walls cracked and shifted again. (Note, in the attached photos, the patchwork quilt on the walls was the OTHER company.) OBA fixed my issues the correct way. And they were great at every step. The work crew Caleb, Delontae, and Dylan were fast, efficient, and cleaned up when they were done. Caleb made sure to explain what was happening as they did the work and ask if I had questions. The work was thorough, and I feel good about it. And even better, they'll be out in 6 months to ensure everything is working as it should and make adjustments if needed."
Crawl Space
Crawl Space
Crawl Space
Crawl Space
Crawl Space

+14

Response time1 day
857 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for WyattWorks
WyattWorks
4.7(
571
)
Basement Drainage Channels - Install

Serving Diamond, OH and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1979

Emergency services offered

Warranties offered

"Wyatt did an awesome job. This was a major job. I had a water pipe break just under the house foundation. They initially believed it could be reached from the outside, but determined the break was just under the foundation. Because of this, they needed to break up the concrete floor in the basement at the outside wall. They carefully removed the floor molding and the wood boards before jackhammering a 2 foot by 1 foot hole at the edge of the floor at the outside wall. They were very neat and tidy. The broken pipe was fixed in less than a day. They then cleaned out many of the faucets and came back the next day to adust the water pressure and be sure all faucets were working properly. They kept us informed at all steps of the process and the cost was less than their estimate. We highly recommend Wyatt for your plumbing needs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Response time8 hrs
20 neighbors recently requested a quote
Recommended by93%of homeowners
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Basement Waterproofing questions, answered by experts

Yes, it is generally unhealthy and can be dangerous to live in a damp basement. The damp air can negatively affect your breathing and lungs, and the moisture promotes mold growth and pest infestations. Inhaling mold spores or waste particles from insects and rodents attracted to the moisture can be hazardous. This damp, moldy air can also circulate into your main living area. It is crucial to resolve any moisture problems and implement preventative measures before using your basement as a living space.

While it’s possible to seal a foundation yourself, it’s not recommended, as it’s a tricky and labor-intensive job. Foundation sealing is best left to the pros to save yourself time, remove the risk of doing it wrong, and keeping yourself safe. Call a foundation repair professional near you to see what the job will cost.

The most challenging part of finishing a basement is addressing moisture control. Basement waterproofing is an essential task that requires a professional’s skills and knowledge. If you don’t properly waterproof your finished basement, it’ll be vulnerable to dampness, water damage, and mold growth. Ensuring proper insulation and ventilation to combat these issues while meeting building codes adds complexity to your remodeling project.

Although the two terms are closely related and often used interchangeably, pier and beam foundations and crawl spaces are different things. A pier and beam foundation is made up of concrete piers and wooden beams and creates a space under the home known as a crawl space. There are several types of foundations that create crawl spaces, often collectively known as “crawl space foundations,” but the crawl space itself is separate from the foundation. 

Yes, cleaning a crawl space is worth the cost. Although it's an out-of-sight area, neglecting it can lead to significant problems like pest infestations (including termites and carpenter ants), mold, and fungal growth, which can cause structural damage. Regular cleaning helps prevent these issues. While hiring a contractor has ongoing costs, the price for cleaning—typically between $0.50 and $4 per square foot—is much lower than the cost to remediate a pest or mold problem. Additionally, a clean crawl space can lead to improved indoor air quality and more comfortable temperatures in your home.

The Diamond, OH homeowners’ guide to basement waterproofing services

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