Full Roof Replacement
Old roof past its life? We handle complete tear-off and installation of your new roof system — clean, fast, and built to handle Ontario's harshest seasons.
You've found the right team. We serve Kitchener, Waterloo, Guelph, Mississauga & Burlington with licensed, insured roofing — with certified crews who take pride in clean installs and lasting results.
No obligation · Takes less than 60 seconds
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We specialise exclusively in roof installation — giving every homeowner our full focus, the best materials, and an install done properly from day one.
Old roof past its life? We handle complete tear-off and installation of your new roof system — clean, fast, and built to handle Ontario's harshest seasons.
Building a new home? We work directly with builders and homeowners to install roofing systems on schedule, on budget, and to the highest standard.
The most popular roofing choice in Ontario — and our speciality. We install architectural and premium shingles from top brands, rated for Canadian weather.
We install TPO and modified bitumen flat roofing systems for homes with low-slope or flat roof designs — durable, watertight, and built to last.
A great roof starts below the surface. We properly prepare your deck, install quality underlayment, and ensure a solid base for your new roof system.
Proper attic ventilation extends roof life and lowers energy costs. We include ventilation assessment and installation as part of every complete roof install.
We focus on one thing — installing roofs properly. That singular focus means better materials, sharper technique, and a crew that knows exactly what a quality install looks like.
We give you a clear, itemised estimate before a single shingle is touched. You always know what you're getting and what it costs.
Our roofers are specifically trained in installation — not jacks-of-all-trades. That means a faster, cleaner, more precise job on your home.
We care deeply about the quality of every install. If something doesn't look or feel right, just call us — we'll make it right.
We're based right here in Southern Ontario. Your neighbours are our clients, and every roof we install is a reflection of our name in your community.
We install new roofs across Southern Ontario — local crews, local knowledge, and a reputation built one installation at a time.
Not sure if we cover your exact area? Call us — chances are we do. (437) 367-7212
From your first call to the final inspection — here's exactly how we handle your roof installation, start to finish.
Fill out our quick form or call us directly. We respond within 2–4 hours — usually much faster.
We visit your property, measure your roof, assess the condition of your decking, and deliver a clear written installation quote — free.
Our crew arrives on the agreed date, tears off the old roof, installs your new system with care, and cleans up every last scrap before leaving.
We walk you through the completed installation so you can see the quality up close. Questions? We're right there to answer them.
Here's what homeowners across Southern Ontario say about their roof installation experience with Sigma Roofers.
"Sigma Roofers installed our new roof in Kitchener last spring. The crew was punctual, the job was spotless, and the new shingles look incredible. Couldn't be happier with the result."
"We got three quotes and Sigma was the most straightforward. They explained exactly what our roof needed, gave us a fair price, and delivered a flawless installation. Very professional team."
"Had a full roof installation in Mississauga with Sigma Roofers — smooth from start to finish. They were clean, efficient, and the quality of the install is excellent. Will absolutely recommend."
Getting a proper roof installed shouldn't be stressful. Reach out today and we'll give you a clear, honest quote for your installation — no pressure, no obligation.