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Avatar for America's Basement Contractor
America's Basement Contractor
4.3(
128
)

Serving Diamond, OH and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"I am 64 years old and have never done an online recommendation previously. I am in this instance due to their superior performance on my basement waterproofing and wall anchor project. Everyone affiliated with the company personified competence, conscientiousness and customer service. Have never had a better customer experience-could not recommend them any more highly."
Mold Remediation
Mold Remediation 2
Wall Anchors
Before 1
 Insulated thermal wall wrap and drainage board

+96

Response time1 day
Response rate85%
69 neighbors recently requested a quote
Avatar for DryTech Basement Waterproofing
DryTech Basement Waterproofing
4.9(
18
)

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
32 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Highlander Waterproofing, Inc
Highlander Waterproofing, Inc
3.9(
61
)

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
31 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for USA Waterproofing & Foundation Services
USA Waterproofing & Foundation Services
4.1(
198
)

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
102 neighbors recently requested a quote
Recommended by84%of homeowners
All County Drainage Contractors
4.8(
199
)

Serving Diamond, OH and surrounding areas

Approved

In business since 1980

Free estimates

Warranties offered

"They did a quick and good job of replacing our water heater. Called again due to standing water in our yard after every rain. They came out and installed a drain and tied my downspouts into it. They also put the excess dirt against the house to improve the grading. I can say after the fall rains and the repeated freezing/thawing in winter that the drain has kept everything dry and we have had no more water issues in the basement. I would recommend these guys."
Response time7 hrs
Response rate100%
Recommended by97%of homeowners
Avatar for Healthy House Systems
Healthy House Systems
5.0(
17
)

Serving Diamond, OH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Absolutely easy to work with, we had great communication throughout the project being completed. Took extra time due to myself wanting a special ordered trench drain to be used in front of the garage. We liked that they came out for a final inspection of the work that had been done and to see if we were happy with it before final payment to be made. We would hire again if needed. Good job installing the new house downspout drain pipe and trench drain."
Bowed Wall
Interior Drainage System
Interior Drainage System
Interior Drainage System
Structural Bracing

+10

Response time1 day
Response rate98%
26 neighbors recently requested a quote
Avatar for Erie Home
Erie Home
4.4(
74
)

Serving Diamond, OH and surrounding areas

Approved (Corporate)

In business since 1976

Free estimates

Credit card accepted

"Erie homes very professional from first encounter to finished project. I now have peace of mind knowing my basement is waterproof. Great job!!"
Basement Before andAfter
Basement Before andAfter
Basement Before andAfter
Basement Before andAfter
Basement Before andAfter

+38

155 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for WyattWorks
WyattWorks
4.7(
571
)

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
Avatar for Betts Structural Engineering LLC
Betts Structural Engineering LLC
4.5(
26
)

Serving Diamond, OH and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Mr. Betts was extremely helpful and answered questions that addressed all our concerns about not only the deteriorated sill plates but the damp basement."
Response time1 day
Response rate100%
5 neighbors recently requested a quote
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Basement Waterproofing questions, answered by experts

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. Whether mold develops depends on several factors, including the severity of the water damage and how quickly the area is addressed. To prevent mold, you must act fast—ideally within the first 24 hours. The process involves cleaning up all standing water and thoroughly drying the affected area. If the damage is extensive, the cleanup was delayed, or you suspect mold might be present, it is safest to assume it has grown and contact a professional mold inspector or removal expert to assess the situation.

Periodic inspections and addressing drainage issues prevent further damage.

In nearly all cases, you are required to install a vapor barrier in your crawl space. However, local regulations will change based on the local climate and the crawl space's susceptibility to moisture. Even if a vapor barrier is not legally required, it is often a good idea to keep your crawl space dry.

Some basement waterproofing methods can actually cause your water or moisture problems to get worse, which is why it’s so important to call in a professional who knows how to solve your underlying issue and use the appropriate waterproofing methods. An example of this would be applying latex waterproofing paint to the insides of your basement walls without fixing the water issue outside. Doing so can trap moisture in the basement walls, which can promote mold growth, peeling paint, and even damaged concrete. However, when done by a professional, the only downside to basement waterproofing is the up-front cost.

Anything having to do with the structure of your home, such as raising the ceiling, is usually the most expensive part of finishing a basement. Another project component that could be a surprisingly high expense is adding an exterior entrance. 

The cost of a walkout basement can be anywhere from $5,000 to $35,000.

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.