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Exalted Services
- Management
- Insulation
- Efficient
“Our Air Conditioner was broken on a first warm wave last week and I called "Exalted Services"then they send to me (Majid team) to upgrate my Cooling system.”
Best Insulation Contractors in Markham, ON
24 contractors listed · 6 in Markham · 5 open 24/7 · 18 open weekends · all 24 rated 4.5+
Data verified October 18, 2026
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Bros. Roofing
- Ethics
- Sunday
- Job
“We were glad he didn't oversell and tried to suggest additional work that was not needed (as opposed to other contractors weve contacted for other jobs).”
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Celluloseman
- Asbestos
- Efficient
- Mold
“We are extremely happy with the work that was done by Daniel and his team and would wholeheartedly recommend them to anyone who require attic insulation.”
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Toprenosolutions Inc.
- Closet
- Inspection
- Home
“So clean, I was expecting a messy renovation but the guys did vacuum in the closet and their job site as well as blowing my driveway after they finished.”
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Toronto City Roofing
- Stairs
- Team
- Chimney
“Their team recently tackled the tricky task of repairing our home's exterior steps, turning a potential safety hazard into a stunning feature of our property.”
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Evergreen Premium Insulation
“Their pest resistant insulation saved me from a nightmare.”
The 24 contractors listed for Markham, ON insulate attics, basements, headers and crawl spaces. Details under each one about materials, hours and advertised services are copied from the company's own site; star ratings and comments come from public reviews.
Area overview: Markham, ON
6 of the 24 contractors we list are based in Markham; the other 18 serve Markham from towns including Richmond Hill (14 km), Toronto (17 km) and Newmarket (25 km). The contractors on this page are rated from 4.5 to 5.0 across 2,311 reviews; 18 have 50 or more reviews. When customers rate these contractors on specific qualities, they most often praise professionalism (92%), responsiveness (82%) and quality (80%). The topics that come up most in reviews of the contractors on this page are "cleanliness", "estimates" and "price". 5 are open around the clock; 18 are open on Saturdays and 11 on Sundays. The services the contractors on this page list most often on their websites are roof repairs (4), roof replacement (4), attic insulation (3), skylights (3) and flat roofing (2). 9 have ten or more years of experience, the longest 25 years. 6 offer emergency call-outs; 5 offer financing or payment plans; 14 give free estimates; 5 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 24 contractors here. Look for the materials they install and whether they do attics, basements or both, because plenty of crews specialize in one. Where there is no site, ask the same questions by phone before booking a visit.
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White & Greer Co Ltd
“Excellent to deal with - The true pros”
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Professional Roofers
- Eaves
- GTA
- Estimator
“Adam from Professional Roofers took the time to understand our needs and went above and beyond to provide us with a comprehensive quote and explained the process.”
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AZ Roofing
- Flat Roof
- Honest
- Pictures
“They were extremely professional: they prepared a comprehensive written estimate, showed up promptly and worked very diligently to complete the project on time.”
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Cadillacs Roofing
- Pictures
- Siding
- Quote
“What stood out the most was their commitment to educating me on the best practices for roofing maintenance, which speaks volumes about their customer service.”
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Quality Roofing Services LTD
- Shingles
- Competitive
- Clean
“Here's the review I wrote a year ago: Aryan and his crew completed the work as he had promised, with good materials, proper equipment, and consideration for our neighbours.”
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Tiltop Roofers
- Questions
- Attic
- Pictures
“They did an amazing job, and I even needed support for a fix after all was paid and done, and they responded promptly and corrected the issue without hesitation.”
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Warner Roofing Inc.
- Clean
- Work
- Efficient
“As snow builds up on the roof, many contractors refuse to come out to perform repair or have weeks of backlog banking on better weather gonna come soon.”
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Pro Insulation Contracting
- Rebates
- Spray Foam
- Company
“Our bedroom on second floor felt so cold during last month; thanks to Ryan's team, we now feel much warmer inside the house by adding insulation inside the attic.”
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NDS Insulation Inc.
- Quote
- Pictures
- Home
“From the time I answered to door as they canvassed our neighborhood, performed an on-site inspection and quote to the actual work I was very impressed with Nick, Luca , Sam and Riffat.”
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Integrity Roofers
- Attic
- Home
- Quote
“They discovered that the roofer I used to replace my roof a few years ago didn't do things properly and if the situation was left unattended, I would have water damage.”
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Guycan Ltd
- Flat Roof
- Budget
- Solutions
“Having completed dozens of large scale roofing projects for the Ontario solar FIT program I can attest to the fact that the Guycan team is up for any challenge.”
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Free Attic
- Basement
- Communication
- Questions
“After they finished upgrading our insulation, the house temperature feels more comfortable and its now less required for furnace to work to keep the temperature.”
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Confirmed Contracting & Insulation
- Bathroom
- Job
- Attic
“I have had a couple of experiences previously with other insulation companies, but they all gave me a hard time, Whether it was the price or the quality of the job.”
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Luso Roofing
- Flat Roof
- Night
- Garage
“I also had some roof vent guards that I wanted installed and while doing some research I stumbled upon a youtube video of Luso doing an installation of such guards.”
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JAD Soundproofing
- Solution
- Bedroom
- Office
“They provided a great soundproofing solution for our home studio with a reasonable price, and more importantly they gave us great advice because we were confused at first.”
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The Next Level Consulting
- Grants
- Government
- Audit
“I was fortunate enough to have them conduct the assessments on both of my properties and if given the opportunity to use them again I would not hesitate.”
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T. Simpson Roofing
- Soffits
- Nails
- Efficient
“I shopped around to get a few quotes and ended up going with T Simpson due to their knowledge, experience, and I was able to see existing jobs they performed.”
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Everest Insulation
- Project
- Basement
- Clean
“Called 2 contractors in Toronto area, they came and gave me an estimate 4 times more expensive than what I had to pay with the Attic Insulation Experts.”
Insulation Services in Markham, ON Cost Estimates
Minimum cost
$681
Maximum cost
$4979
National Average
$2334
Avg Per Hour Rates
$94
$1464
$3369
Typical price range is based on 463 cost profiles
Why these companies made our list
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