
Radon Gas - Abatement, Radon Gas - Testing, HVAC , and 3 more
"Fast and to the point. They got the job done quick and clean. :)"
Tom K. in December 2024

Testing & Abatement Services
"Outstanding experience"
0421AC277AA224D073284DCA5F5AA8D536C7A02E6ECF195708CB3D7ECA7F33BF 6. in October 2025

Toxicity and Mold - Removal and testing
"Red Diamond is a company I would recommend to anyone, Antonio came in and explained the full process to me from start to finish he and his brother came in did what was needed in a timely professional manner. They were very efficient and cleaned up everything. Defiantly would recommend them to anyone."
Donna W. in December 2022
Toxicity and Mold - Removal - For Business, Toxicity and Mold - Removal, Recovery Service - Water Removal , and 1 more
"Steve (and Mike) where on the job when they said they would be. They answered all our questions, went right to work did a grate job of removing our mold problem (actually looks a good as new), Cleaned up their work area when done. Price was right, work was great I would recommend them anyone. Thank you Home Advisor for the recommendation, and thank you Steve for a job well done. Lenny B Hubertus, WI"
Leonard B. in December 2020

"Jake is very professional, he explained what he was going to be doing. I highly recommend this company."
84D4C68E3E7BFE139678916FE76A23F8ADD0C5C881DA3E52655EABD0198AE026 F. in February 2025

"Rob is AMAZING! He has removed vermiculite, re-insulated and removed asbestos for me at different locations in Dodge and Jefferson County over the years. As a realtor it is important to have someone you trust to refer clients too. GREAT COMMUNICATOR, SHOWS UP IN A TIMELY MANNER, AND HAS FAIR PRICING. I would definitely recommend this company to anyone."
Jennifer S. in December 2024
Flooring- vinyl sheet flooring, (linoleum) glue, floor tile / mastic, Asbestos Abatement: boiler dismantlement & duct removal, thermal pipe wrap, Mold Remediation , and 2 more
"They showed up on time and ready to work. They adapted well to my property and were mindful of my neighbor's property. When they left there was no evidence of any asbestos on the house, or ground around the house. They did a great job. I would definitely recommend them to anyone needing asbestos abatement."
Russ T. in July 2013
Jefferson Testing & Abatement Companies are rated 4.8 out of 5 based on 347 reviews of 347 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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