Ridge Top Exteriors
“I waited for one winter and of course no problems and it looks terrific.”
Best Insulation Contractors in Madison, WI
15 contractors listed · 7 in Madison · 2 open 24/7 · 3 open weekends · 12 rated 4.5+
Data verified October 20, 2026
Accurate-Airtight Exteriors
“Everyone I interacted with was professional and friendly, and the project was completed on time and close to the estimate.”
Swita Metal Roofing Madison
“To Mike Swita and the crew: thanks for doing a great job on our roof and nimbly and thoughtfully adapting the plan as needed.”
Environmental Construction Services Inc.
“Incredibly fast response but what really impressed me was that they did not “oversell” us at all - he was just as clear about what was not an issue and that we don't have to worry about.”
Metal Roofing Systems
“Worked with us to find a tile type that would meet the neighborhood roofing requirements (historic neighborhood).”
Johnson Insulation Industries Johnson-Phoenix Group L.l.c.
The 15 contractors listed for Madison, WI insulate attics, walls, crawl spaces and rim joists. Details under each one about materials, hours and the services advertised are copied from the company's own site; star ratings and comments come from public reviews.
Area overview: Madison, WI
7 of the 15 contractors we list are based in Madison; the other 8 serve Madison from towns including McFarland (6 mi), Sun Prairie (8 mi) and Verona (4 mi). 13 of the contractors on this page have a rating, from 4.4 to 5.0 across 1,324 reviews; 5 have 50 or more reviews and 12 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (95%), responsiveness (82%) and quality (81%). The topics that come up most in reviews of the contractors on this page are "cleanliness", "crew" and "estimates". 2 are open around the clock; 3 are open on Saturdays and 2 on Sundays. 2 show a license on their websites and 3 have a BBB rating of A or A+. Domain records put 13 websites of the contractors on this page at ten or more years old; the oldest dates from 2001. 2 offer emergency call-outs; 4 offer financing or payment plans; 10 give free estimates; 4 are family- or locally-owned and 4 list coupons or special offers. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
How many listings here have a website?
A website is on file for all 15 contractors here. Use it to see which materials they actually install, since a firm that only sprays foam will recommend foam. A contractor with no site is not automatically worse, but you will have to ask on the phone what the site would have told you.
Raymer Pipe & Duct Insulation Inc
The Badger Company
“As a new homeowner I had lots of questions and he always answered them patiently and thoroughly, even when I had follow-up questions after the job was done.”
Ace Exterior Solutions
“Awesome job, there when they said they would be, and explained basically every step in terms i could understand.”
Ganser Company
“They were professional, precise and made recommendations to make the project not only functional but beautiful.”
Rainbow Insulators
“Rainbow Insulators is a great company!”
TNT Insulation
“Returned phone call in timely manner and very responsive to my questions.”
City Wide Insulation
“They have been extremely accommodating to our needs during our building schedules”
Badgertech Insulation
“He kept me informed with job status, and was efficient with his time.”
Wisconsin Roofing Repair
“I appreciate the quality of the work, as well as the punctuality with job completion while staying within the expected budget.”
Why these companies made our list
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