Niagara Environmental Dynamics Ltd
“Very professional, responded to inquiries on a weekend, and provided information requested very quickly.”
Best Insulation Contractors near Port Colborne, ON
2 of these contractors are based in Port Colborne; the others serve Port Colborne from towns including Stoney Creek, St. Catharines and Hamilton.
2 open 24/7 · 9 open weekends · 20 rated 4.5+ · 3 show a licence
Data verified October 21, 2026
Newman Bros Ltd
Hamblet's Roofing Siding Windows
“You did a very professional job on my roof and now I can sleep well at night.”
JPG Roofing & Construction
“They truly take their time in perfecting their work and it shows in the end when it's all done.”
Advance Insulation
Doug's Roofing & Construction
“His work was very professional, very fast, and he is very courteous.”
The 24 contractors listed for Port Colborne, 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: Port Colborne, ON
23 of the 24 contractors on this page have a rating, from 4.0 to 5.0 across 687 reviews; 7 have 50 or more reviews and 20 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (91%), quality (84%) and responsiveness (80%). The topics that come up most in reviews of the contractors on this page are "price", "estimates" and "cleanliness". 2 are open around the clock; 9 are open on Saturdays and 5 on Sundays. The services the contractors on this page list most often on their websites are attic insulation (4), eavestrough (3), siding (3) and roofing (2). 3 show a licence on their websites and 2 list staff certifications (GAF). 12 have ten or more years of experience, the longest 37 years. 2 offer emergency call-outs; 3 offer financing or payment plans; 12 give free estimates; 3 are family- or locally-owned and 2 list coupons or special offers. We have a website on file for 23 of the contractors on this page; 20 publish a contact page; 18 list a public email and 1 takes bookings online. We count these figures across the contractors on this page; 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 23 of the 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.
Niagara Roofmasters
“I spoke with Taylor and she was really nice, I was able to get all the information I needed.”
Gateway Exteriors
“Jason and his crew did a Wonderful job on our Window Project, from First measure to Final walk through.”
Wooly Insulation Inc
“I was floored how quick they were finished and how great it looked.”
Noble Roofing
“They did some work for my neighbour in Thorold South last year and I was so impressed that I made up my mind that Noble is who I wanted working on my roof when the time came.”
Moore Insulation Ltd.
“We used to need an extra portable AC on the second floor because the central air couldn't keep it cool, what a difference the new attic insulation did, no more second AC!”
Gemini Windows
“I was very impressed with the attention to detail that his crew possessed, and they were a pleasure to work with.”
Envirotech Exteriors Inc.
“These two men are artists, they are seasoned workers, experience and professional and included us in choices every step of the way.”
Pro Insul Limited
David Latchford Construction Ltd.
“We have used David Latchford for various projects around our house for many many years.”
Enersystem Insulation Limited
Combat Foam Insulation Inc
“I don't like parting with my money, however when you find professional trades people (which is rare in my opinion) and the job is done correctly, you don't question it, you actually feel good about paying for it.”
Superior Insulation Services Inc.
Jerry's Insulating Co
“They came in and were kind, courteous and punctual from start to finish.”
Born To Foam
“I want to thank Ron and Brodie from Born to Foam for the amazing job of foaming my garage.”
Custom Contracting Eavestrough Repair Grimsby
“Superior attitude and kept me informed during the work and then showed me before and after pictures of the work”
McGowan Insulations Ltd
Silicone Seals Caulking Sealing & Pest Blocking
“They were pleasant, polite, punctual, highly skilled and cleaned everything up after the work was done.”
Sameday Roofing Systems Inc.
“I highly recommend Sameday Roofing they are the first roofing company that I have delt with that doesn't send crackheads up a ladder to make more of a mess!”
Why these companies made our list
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