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TRUSTED BY SUMMIT, WI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon10
    Verified mold testing and remediation services reviews

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

Avatar for Skeleton Key, LLC
Skeleton Key, LLC
4.9(
158
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Summit, WI and surrounding areas

Approved

In business since 2016

Emergency services offered

Warranties offered

"He is very informative, thorough, helpful, professional, kind and totally understood why I needed this inspection and testing due to my husbands health as well as doing everything he possibly could to have the results to to take to my husband's pulmonologist appointment. I am very grateful to him for explaining so much to me in a manner that I understood as well as his recommendations, showing me examples and with thorough descriptions all without being forceful as what I must do. I am now waiting for the test results. As I could not be happier with professional I Highly recommend."
Metal Roof & 3 Chimneys
Response time2 hrs
Response rate88%
1 neighbors recently requested a quote
Avatar for Mold Test Company WI
Mold Test Company WI
4.0(
68
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Summit, WI and surrounding areas

Approved

In business since 2018

Emergency services offered

Small jobs welcome

"Henry came to our house. He was very knowledgeable about mold and what to look for. He answered all my questions and was very helpful. Peter who called me with the results was very nice and answered my questions. He even called back the next day when he noticed that an email he sent me didn t go through. They gave me a lot of information to help me continue my search to get rid of my mold and poor air flow."
Drywall
Drywall
Drywall
Insulation
Insulation

+69

Response time1 day
48 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Elite Indoor Air
Elite Indoor Air
4.9(
34
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Summit, WI and surrounding areas

Approved

In business since 2020

Warranties offered

Small jobs welcome

"I can't say enough how wonderful Damian is and all the help he provided me. He is very patient and has a heart of gold. He provided a demo for me to use while I was undergoing water damage. He explained how the air testing works and his air quality machine is amazing. He went above and beyond to accommodate me, providing his vendors to help assist me in my remodeling process. He has just been amazing in this whole process. There simply isn't enough good people who care for their customers like he does. There needs to be more Damian's around. Thank you so much for your guidance and support you provided me. I am so grateful that Angi provided me your business. You are simply a great person who shows compassion in all you do."
Digital test
Air quality digital test before
Digital test after active pure treatment
Air quality test
Windo seal

+15

Response time8 hrs
Response rate97%
76 neighbors recently requested a quote
Avatar for DJK Environmental, LLC
DJK Environmental, LLC
4.0(
28
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Summit, WI and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"We contacted this company based on the positive reviews. It seems as though that there aren't many companies who want to touch this type of work (so to speak). Or, if they do they are expensive. DJK wasn't much of an exception. They did respond rather quickly when I had first contacted them. They came out and inspected the suspected mold problem area in our bedroom. So finally about 3 weeks later, $1,330.00 and 2 hours of work AND for a 2' x 2' square hole cut out in our bedroom wall. And, they had sprayed a potent biocide chemical that hopefully killed our mold problem! They don't do any mold air quality testing at all. Hence, a lab is involved. DJK will come out in advance and use a moisture meter that is supposed to detect where the moisture sits. Then they zero in on the behind the walled suspect area. That problem was caused by another painting contractor who supposedly did caulk around our windows! Apparently not. Otherwise water wouldn't have seeped in and caused this issue. Oh well, another review and problem for another day. We think it's now gone. And we'll be happier for that part. They charge extra to repair the plaster wall with a drywall (NOT plaster). You'll have to hire someone else to do plaster repair if that is what you want. Don't forget about replacing the possibly contaminated wall insulation that they may take out and dispose of. Then figure either priming and painting it yourself after the plaster has cured. Or, hiring yet another darned contractor. In short, I think DJK does the job ok, but they ain't cheap. We will see."
5 neighbors recently requested a quote
Recommended by78%of homeowners
Fresh Start Restoration
4.5(
44
)
Mold & Toxic Material TestMold & Toxic Material Test - For BusinessToxicity and Mold - Removal+1 more

Serving Summit, WI and surrounding areas

Approved

In business since 2022

Free estimates

Customers say: Quality work

"Keith performed the job in a much more efficient manner than I expected. We had mold in our walls and I thought we’d have to replace our bathroom vanity. He went above and beyond, was knowledgeable, insightful, friendly, and responsive. He provides recommendations about other aspects of the house in a tactful way that I find incredibly valuable as a first time homeowner. Highly recommend!"
4 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Affiliated Building Services
Affiliated Building Services
5.0(
1
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Summit, WI and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

At ABS Mold Remediation we pride ourselves in quality, value, and service! We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We look forward to earning your business! \n \nmonday - friday 8am-5pm \nAndroid

Living room before remediation
Living room after Remediation
Attic sheathing
Attic surface mold
Attic roof sheathing

+10

Response time1 day
Recommended by100%of homeowners
Avatar for Voda Cleaning & Restoration of Franklin
Voda Cleaning & Restoration of Franklin
4.7(
13
)
Toxicity and Mold - Removal

Serving Summit, WI and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Your Cleaning & Restoration Sidekick. At Voda, our mission is to make life easier for those responsible for creating inviting, healthy spaces where people live, work, and do business. We specialize in a wide range of cleaning & restoration services to keep your home or business clean, fresh and free from damage including: carpet cleaning, floor cleaning, tile & grout cleaning, upholstery cleaning, odor removal, water damage restoration, storm damage restoration, mold mitigation and more!

Upholstery Cleaning
Carpet Cleaning
Recovery Service
IICRC
Response time2 hrs
25 neighbors recently requested a quote
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Mold Testing and Remediation FAQs, answered by experts

Costs depend on property size, test types, and additional services like mold sampling.

Yes, drywall mud can get moldy—though the presence of moisture is required for this to happen. That’s why the best way to keep your powdered drywall mud fresh for as long as possible is to keep it in dry storage conditions. If you live in a humid area, it might not make sense to stockpile a lot of powdered drywall mud before you’re ready to use it. As for premixed drywall mud, avoid opening the container until you’re ready to use it—and don’t expect it to last longer than six months.

Air purifiers are meant to kill airborne mold, along with pollen and dirt. Air purifiers are a good option if you have allergies and need a whole-home solution, whereas dehumidifiers are best for naturally damp areas (like a bathroom). Consider getting an indoor air quality test to determine if an air purifier is right for you.

The primary difference is that black mold (Stachybotrys chartarum) is considered toxic and more dangerous than regular mold. It can produce harmful chemicals called mycotoxins, which may lead to severe health issues like respiratory problems, skin irritation, headaches, and other long-term complications. While regular mold is rarely toxic, it can still cause allergic reactions and respiratory irritation. Visually, black mold often appears dark—green, gray, brown, or black—with a fuzzy texture, whereas regular mold can be almost any color. Black mold is less common and typically grows in areas with severe water damage. Regardless of the type, you should not ignore any mold infestation in your home.

If you’re worried mold might still be lingering after you’ve cleaned your items, here are signs to watch for:

  • Musty smell

  • Visible spots or stains

  • Allergy symptoms when you’re around the item

  • Damp or sticky feel.

If you notice these signs, it might be time to let go of the item or get professional treatment.

The Summit, WI 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.