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Top-Rated Mold testing and remediation specialists in Walnut - Updated Nov 2026

Avatar for Dedication Restoration
Dedication Restoration
4.6(
115
)
Mold & Toxic Material TestToxicity and Mold - RemovalIndoor Air Quality Testing+2 more

Serving Walnut, IL and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I needed heating ducts cleaned. The first company I called did not show up or call. I called The Works and they came the next day - gave me a price and job was completed. Very upfront with process and also did mold remediation. It's very seldom these days for someone to actually do what they say and also do a good job!!! I would recommend this company very highly!!!"
Response time4 hrs
15 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Dedication Restoration
Dedication Restoration
4.6(
132
)
Mold & Toxic Material TestMold & Toxic Material Test - For BusinessToxicity and Mold - Removal+1 more

Serving Walnut, IL and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"The Works Air Care and Restoration cleaned out our air ducts and sprayed mildecide to prevent mold growing in our air system. They also fixed our chimney and installed a cap so no unwanted critters could make their way into the house. They were very kind, courteous and quick."
Response time3 hrs
Response rate94%
Recommended by95%of homeowners
Dedication Restoration
4.6(
115
)
Mold & Toxic Material TestMold & Toxic Material Test - For BusinessToxicity and Mold - Removal+1 more

Serving Walnut, IL and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Very good and he also advised me that some dry wall had mold on it and he removed that free of charge. I would recommend this person to anyone that needs his service. I also like the fact that it is family owned and he is training his boys to follow him and learn the trade."
Recommended by95%of homeowners
Preferred Home Improvements - Home Facebook
4.4(
96
)
Mold & Toxic Material Test

Serving Walnut, IL and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"Drake and his helper were very personable, professional, and attentive. They noticed we had a black mold problem in the basement that we hadn't seen and proposed a solution to help us. The solution keeps our family safe and saves us some money. Would definitely recommend hiring them!"
Response time7 hrs
Response rate99%
Recommended by94%of homeowners
Avatar for The Works Air Care & Restoration
The Works Air Care & Restoration
4.5(
8
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business+2 more

Serving Walnut, IL and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Went excellent did everything I asked and then some my house isn't stuffy and has never smelled so nice. I will defiantly be having them back every year. Mold was removed from basement and now I'm not scared to bring my baby's down stairs when i do laundry. Big thanks to The Work's!!"
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Recommended by100%of homeowners
Avatar for Guardian Preservation Services, Inc.
Guardian Preservation Services, Inc.
3.9(
16
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Walnut, IL and surrounding areas

In business since 2005

Emergency services offered

Warranties offered

"The work was completed12/17/10. I sent payment shortly thereafter. To date I have not received the post air sample results, copy of guarantee or any acknowledgment from from Guardian. I called Candy Harris and have no return call from her. I know it is the holidays but I still deserve some contact from calls and payment. I am going to attempt to contact them today. I am trying to refinance my home and this lack of communication is slowing the process beyond the deadline set by State Farm. I receive daily communication from State Farm and am upset I'm getting nothing from the people who did the work. I have questions that go unanswered"
 Mold on Wall
Mold in the Kitchen
In the Attic
Attic
Between the attic joists

+1

Recommended by100%of homeowners
Avatar for Preferred Home Improvements
Preferred Home Improvements
4.7(
12
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business+2 more

Serving Walnut, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Very good. This was our first time having this done so we didn't know what questions to ask to get a complete estimate. Because of this they added extra services to ensure we would be happy with their work. Very polite and clean. Would definitely hire them again."
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+30

Recommended by100%of homeowners
Avatar for SAL Construction Services
SAL Construction Services
4.2(
17
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business+2 more

Serving Walnut, IL and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"We hired SAL to install new ceramic tile floors in our hall bath, master bath, & master hallway. They also put in new 3/4 cherry hardwood floors in my master bedroom. The craftsmanship was immaculate. He shows up on time, worked on my job everyday till it was done, cleaned up at the end of the day, & most importantly was very respectful to me & my family. I am so pleased with the work that I would recommend SAL to everyone!!!! Great work, great price, great guy!!!
"
Additional Photos
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+8

Recommended by80%of homeowners
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Mold Testing and Remediation FAQs, answered by experts

Mildew is a type of mold that forms in areas of excessive moisture and poor ventilation. Although it commonly exists in household air, it can’t take hold and spread if a surface is clean and dry. Generally, if you have any mildew or mold issues, it’s because the humidity in either your house, room, cabinet, or cupboard is above 50 percent. Common areas where you’ll find mildew are around water sources, which is why it’s commonly found near showers and in kitchen sinks.

You can do a basic home water test, but we recommend having a pro conduct a more in-depth test. This method is accurate, and you’ll have a pro who knows your house helping you determine a plan of attack for anything out of the ordinary.

In some cases, yes, insulating an unheated garage can lead to mold and mildew. The issue with insulating a garage is that the interior will warm up and cool down more slowly than the exterior air, which can cause condensation inside the space. Where there is moisture, there is likely to be mold and mildew over time. Installing a vapor barrier can help avoid moisture and mildew problems in an insulated garage.

Black mold and wood rot are both types of fungi that thrive in damp areas, but they are distinct issues with different consequences. Wood rot specifically refers to the decay of wood caused by fungi, which compromises the wood's structural integrity. Black mold, on the other hand, is a fungus that grows on the surface of materials, including both rotting and non-rotting wood. The primary difference is their impact: wood rot affects the wood's structure, while toxic black mold is a health hazard. Inhaling black mold spores can cause severe respiratory issues, whereas wood rot spores are generally not harmful to people. Because mold can grow on rotting wood, the two issues can be interconnected, but they are not the same.

Homes should be checked for mold annually, especially if you live in an area with high humidity or frequent rainfall. Inspections are crucial following flooding, roof leaks, or plumbing issues. More frequent checks are necessary if your home has a history of mold problems or water damage. Regular inspections help detect mold early, preventing costly remediation and minimizing health risks, especially in moisture-prone areas such as basements and bathrooms.

The Walnut, IL homeowners’ guide to mold testing and remediation services

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