Eastern Eavestroughing
“He answered all of our questions and even advised us to NOT add something extra as it would have caused us issues in the future (even though he could have uncharged us for it).”
Best Insulation Contractors near Ajax, ON
3 of these contractors are based in Ajax; the others serve Ajax from towns including Oshawa (16 km), Pickering (5 km) and Whitby (8 km).
5 open 24/7 · 11 open weekends · all 15 rated 4.5+ · 1 shows a licence
Data verified October 16, 2026
Norris Roofing
“I've worked with Rob twice now, and am always impressed with his service.”
Petevi Foam Insulation
“Hey there, I hired this guys, and they showed up on time, they did their work properly”
Wilson Roofing
“They arrived in the morning around 8:30 and were totally finished and cleaned up before 3pm.”
AZ Roofing
“They were extremely professional: they prepared a comprehensive written estimate, showed up promptly and worked very diligently to complete the project on time.”
Logik Roofing & Insulation Oshawa
“Not only did they insulate the attic and weatherproof the home, they also made my day seem a little brighter.”
The 15 contractors listed for Ajax, 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: Ajax, ON
The 15 contractors on this page are rated from 4.5 to 5.0 across 2,272 reviews; 12 have 50 or more reviews. When customers rate these contractors on specific qualities, they most often praise professionalism (94%), quality (91%) and responsiveness (84%). The topics that come up most in reviews of the contractors on this page are "estimates", "price" and "cleanliness". 5 are open around the clock; 11 are open on Saturdays and 10 on Sundays. The services the contractors on this page list most often on their websites are roof repairs (4), roof inspections (2), roof replacements (2) and siding installation (2). 1 shows a licence on its website. Domain records put 7 websites of the contractors on this page at ten or more years old; the oldest dates from 2005. 5 offer emergency call-outs; 2 offer financing or payment plans; 12 give free estimates; 6 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 15 of the contractors on this page; 13 publish a contact page; 10 list a public email and 1 takes bookings online. 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.
Are all of these firms based in Ajax?
No. 3 have an address in Ajax and the rest come from other towns within 25 km. Rig and hose mean these crews cover a wide area from one yard. Ask whether your address falls inside the zone they work without a surcharge.
Ajax Roofing Inc
“Couldn't be happier with Ajax Roofing, the single easiest transaction we've had with contractors since buying our home.”
Bros. Roofing
“We just had our entire roof done on one of the properties and were very satisfied with the workmanship.”
Over the Top
“He was very honest and quick to come out and do a great job on replacing some shingles and vents.”
Dryhome Roofing
“Jordan and his team came in early on the day of the appointment and did an amazing job in replacing our roof!”
C.D. Roofing & Construction Ltd.
“His crew came to the house, inspected the damage and the condition of the entire roof, matched the shingles, provided a reasonable quote, and performed the necessary work.”
Home Doctor
“Shaun's team replaced the siding on my older Pickering home with the highest degree of care and attention to detail.”
Windmill Roofing & Exteriors
“I had lost a few shingles after the recent windstorm,very quick to come and fix my problem,great price to add to my satisfaction,thanks”
Turnbull Roofing & Renovations Ltd
“Higher cost than other companies but provided in person quote, adding 2 additional roof vents that they recommended along with the usual roofing requirements.”
360 Roof
“At the estimation/proposal stage, Keith answered our questions and addressed all our concerns, which helped us decide which options/ upgrades made sense to include in our roof replacement project.”
Why these companies made our list
Is this page useful? Yes
No
Is there anything wrong with this page?
