North London Roofing
“It only took Mike 5 minutes to inspect my roof and repair the shingles blown away by the wind.”
Best Siding Contractors in London, ON
23 companies listed · all 23 in London · 4 open 24/7 · 8 open weekends · 21 rated 4.5+
Data verified October 18, 2026
Armour Shield Roofing London
“He thoroughly explained the product offerings, what to expect during installation and answered all our questions.”
Himalaya Group
“Jesse was one of the guys that did our roof he is absolutely amazing he lets you know what the plans are and gives you updates all thru the day”
1st Choice Home Solutions
“The man that did the siding was very professional, very accurate with his work.”
London Eavestrough and Siding
“I had London Eavestrough replace the siding, soffit, fascia, eavestrough and install leaf guards.”
Green Metal Roofing and Manufacturing Inc.
“If you want a top-quality roof, we highly recommend Green Metal Roofing.”
Listed for homeowners in and around London, ON, these 23 companies work on exterior walls. Details about materials, colour ranges and insulation options are drawn from each company's own site, and the review quotes underneath are public reviews.
Area overview: London, ON
All 23 companies we list here are in London itself. We have 31 companies in London on file; this page shows the highest-rated 23. The companies on this page are rated from 3.6 to 5.0 across 2,283 reviews; 11 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (90%), quality (88%) and punctuality (74%). The topics that come up most in reviews of the companies on this page are "estimates", "price" and "cleanliness". 4 are open around the clock; 8 are open on Saturdays and 5 on Sundays. The services the companies on this page list most often on their websites are commercial roofing (2), residential roofing (2), roof repairs (2) and roof replacement (2). 2 show a licence on their websites. Domain records put 8 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 5 offer emergency call-outs; 1 offers remote or virtual consultations; 3 offer financing or payment plans; 11 give free estimates; 1 is family- or locally-owned and 2 list coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
How many of these companies publish a website?
Websites are listed for 22 of the 23 companies on this page. Open them and look for finished houses nearby, ideally after a winter or two rather than on handover day. Close-up photographs around windows and at corners show the standard of the trim work, which is where a rushed job gives itself away first.
Humble Roofing & Renovations Inc.
“We called Rajinder to help us with it, he came right away, looked into the situation and completed his job.”
Southwinds Roofing
“The crew was professional, friendly, and there were no nails on the ground when they were done.”
Davidoff Roofing (London) Ltd
“From getting our quote from Brent, to having the work done by Kyle and Schick, everything was top notch.”
Accell Roofing Inc
“Tom and his team were very professional and delivered everything they promised.”
Blake Exteriors Window and Door
“We love the new door and no longer have a cat always trying to escape as this one closes beautifully!!”
Aluminum Associates
“When I think I have ordered everything I need she picks up on things that saves me time having to come back to pick up.”
Murray Shaw Roofing
“Their price was competitive and the work they did was top-notch, professional and clean.”
Skylar Group Ltd
“These guys showed up on time and walked me through the entire process in a kind and professional manor.”
Courtney Roofing Inc.
“Got the job done in a timely fashion just as they promised.”
Beaumart Aluminum Ltd
“We had Beaumart replace all of our main floor windows, eaves and downspouts and put new siding on our addition.”
Legendary Exteriors
“If you can utilize their services you definitely should as you wont be disappointed by their work or professionalism”
Lloyd's Roofing
“Lloyds team did our roof a few years ago and it's stood the test of time.”
La Fleche Roofing (1992) Ltd
“The Lafleche crews have completed many high profile roof projects with me and I have been very happy with the installation and after installation service every time.”
Ontario Panelization
Complete Consultation & Construction Inc.
All Pro Roofing & Sheetmetal Ltd.
“Rob and his team repaired my flat roof in a timely manner.”
Canadian Rooftops
“Moe was great to work with and even saved me some money on things I didn't need.”
Why these companies made our list
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