Company lists · Data refreshed September 2026

Top 25 Flat roof installation companies based in Canada

Name: Flat roof installation companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 522 companies tracked

RevenueBase identified 522 flat roof installation companies headquartered in Canada as of September 2026 and tracks 3,446 professional contacts across them, including 1,056 with verified work emails. Calgary is the largest hub.

This list covers flat roof installation companies headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

522Companies

3,446Contacts tracked

1,056Verified emails

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The 25 largest flat roof installation companies based in Canada

Ranked by team size

Top 25 of 522 flat roof installation companies based in Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to flat roof installation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Bothwell Accurate Co. INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	201-500	301 contacts →
	Indirect evidence “Bothwell-Accurate is one of the oldest and most experienced companies providing Roofing and Waterproofing services to Industrial, Commercial and Institutional buildings in the…” Source: RevenueBase Database · checked Sep 19, 2026
2	Triumph Group Of Companies	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	110 contacts →
	Indirect evidence “For over 35 years, Triumph has served Southern Ontario, Alberta and Eastern Canada as the leading roofing and cladding contractor for new building construction, repair…” Source: RevenueBase Database · checked Sep 19, 2026
3	Garland Canada INC	Indirect evidence	Etobicoke, ON, CanadaHQ checked Sep 19, 2026	51-200	90 contacts →
	Indirect evidence “For over a century, Garland offers high performance roofing and building envelope solutions that exceed today’s requirements.” Source: RevenueBase Database · checked Sep 19, 2026
4	Semple Gooder Roofing Corporation	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	201-500	86 contacts →
	Indirect evidence “Years of Expertise and Reliability Founded in 1947, Semple Gooder has served Toronto’s Commercial and Industrial communities for more than 65 years and has gradually expanded to…” Source: RevenueBase Database · checked Sep 19, 2026
5	Toitures Brault Brault Roofing	Indirect evidence	Saint-jean-sur-richelieu, QC, CanadaHQ checked Sep 19, 2026	201-500	69 contacts →
	Indirect evidence “Depuis sa fondation en 1949, Toitures Brault est passé maître dans le domaine de la toiture.” Source: RevenueBase Database · checked Sep 19, 2026
6	Toiture Couture	Indirect evidence	St-hubert, QC, CanadaHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “Toiture Couture offre des services d’étanchéité en revêtement de toiture à la fine pointe de la technologie pour le marché commercial, industriel et institutionnel depuis plus de…” Source: RevenueBase Database · checked Sep 19, 2026
7	Covertite Eastern LTD	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “Covertite was founded in 1951 by the Warner family as a small roofing company.” Source: RevenueBase Database · checked Sep 19, 2026
8	Couverture Montréal Nord	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	201-500	45 contacts →
	Indirect evidence “Fondée en 1954, Couverture Montréal Nord se spécialise dans l’étanchéité et le revêtement de toiture pour le marché commercial, industriel et institutionnel.” Source: RevenueBase Database · checked Sep 19, 2026
9	Toitures Trois Étoiles INC	Indirect evidence	Lasalle, QC, CanadaHQ checked Sep 19, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
10	LAING	Partial evidence	Kelowna, BC, CanadaHQ checked Sep 19, 2026	51-200	42 contacts →
	Partial evidence “Founded in 1987, LAING provides roofing, sheetmetal, waterproofing and panel system installations for commercial, industrial and large scale residential projects.” Source: RevenueBase Database · checked Sep 19, 2026
11	Nedlaw Group	Indirect evidence	Breslau, ON, CanadaHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “Since the company was established in 1988, Nedlaw has developed a long history of innovation, leadership and industry influence.” Source: RevenueBase Database · checked Sep 19, 2026
12	Transcona Roofing LTD	Partial evidence	Winnipeg, MB, CanadaHQ checked Sep 19, 2026	51-200	41 contacts →
	Partial evidence “Our Services Install – New Construction, reroofing & recovering of all roof systems and architectural sheet metal & wall systems.” Source: RevenueBase Database · checked Sep 19, 2026
13	Toitures Hogue	Indirect evidence	Blainville, QC, CanadaHQ checked Sep 19, 2026	201-500	35 contacts →
	Indirect evidence “Fondée en 1972, Toitures Hogue est un des plus importants couvreurs au Québec.” Source: RevenueBase Database · checked Sep 19, 2026
14	Raven Roofing LTD	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 19, 2026	51-200	35 contacts →
	Indirect evidence “Raven Roofing is one of BC's leading commercial roofing contractors.” Source: RevenueBase Database · checked Sep 19, 2026
15	Atlantic Roofers	Indirect evidence	Moncton, NB, CanadaHQ checked Sep 19, 2026	51-200	35 contacts →
	Indirect evidence “We are now Outcape.” Source: RevenueBase Database · checked Sep 19, 2026
16	Design Roofing & Sheet Metal LTD	Indirect evidence	Port Coquitlam, BC, CanadaHQ checked Sep 19, 2026	51-200	33 contacts →
	Indirect evidence “Design Roofing is the premier Vancouver, Lower Mainland and Greater Toronto Area commercial & multi-unit residential roofing contractor, providing Quality on Top since 1984.” Source: RevenueBase Database · checked Sep 19, 2026
17	Groupe Pentagone	Indirect evidence	Mirabel, QC, CanadaHQ checked Sep 19, 2026	51-200	32 contacts →
	Indirect evidence “L’histoire de notre expertise a commencé au Québec, lorsque deux grandes entreprises familiales québécoises ont uni leurs forces et leur énergie pour mieux servir leur clientèle…” Source: RevenueBase Database · checked Sep 19, 2026
18	Villa Roofing & Sheet Metal	Indirect evidence	Vancouver (se Oakridge / East Marpole / South Sunset), BC, CanadaHQ checked Sep 19, 2026	51-200	31 contacts →
	Indirect evidence “Villa Roofing is British Columbia's industry leader in Roofing and Waterproofing systems for medium to large-scale Multi-Family Residential, Commercial, Industrial and…” Source: RevenueBase Database · checked Sep 19, 2026
19	Avenue Road Roofing	Strong evidence	Toronto, CanadaHQ checked Sep 19, 2026	51-200	31 contacts →
	Strong evidence “A roofing company responsible with the installation of shingle roofs, metal roofs, flat roofs(modified bitumen, tar and gravel, EPDM)-Aluminum trough and downspout, vinyl and…” Source: RevenueBase Database · checked Sep 19, 2026
20	Advanced Level Roofing	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “Advanced Level Roofing is your local roofing company.” Source: RevenueBase Database · checked Sep 19, 2026
21	Toiture Québec	Indirect evidence	Québec, QC, CanadaHQ checked Sep 19, 2026	51-200	28 contacts →
	Indirect evidence “418-TOITURE info@toitureqc.com TOUT POUR TOIT!” Source: RevenueBase Database · checked Sep 19, 2026
22	Tri-Tech Pinnacle Group	Indirect evidence	Aurora, ON, CanadaHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Tri-Tech Pinnacle Group is experienced with all types of roofing products and systems.” Source: RevenueBase Database · checked Sep 19, 2026
23	Alliance Roofing Canada	Partial evidence	Guelph, ON, CanadaHQ checked Sep 19, 2026	51-200	26 contacts →
	Partial evidence “Since and over sq.ft of Flat Roofing Installed.” Source: RevenueBase Database · checked Sep 19, 2026
24	LK Toitures	Indirect evidence	Boisbriand, QC, CanadaHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “Située dans la ville de Boisbriand et présidée par M.” Source: RevenueBase Database · checked Sep 19, 2026
25	DWS Roofing And Waterproofing Services INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: flat roof installation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names flat roof installation companies.
Partial evidence: Its own public description names part of flat roof installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name flat roof installation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 522 flat roof installation companies based in Canada

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Flat roof installation companies based in Canada at a glance

As of Sep 19, 2026

30.6%Verified-email coverage

6.6Average contacts per company

11-50Median size (employees)

8.8%Largest-city concentration · Calgary

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

230

11-50

198

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 522 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among flat roof installation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “flat roof installation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names flat roof installation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among flat roof installation companies, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,056 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Flat roof installation companies by metro

Flat roof installation companies in Calgary46
Flat roof installation companies in Toronto36

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names flat roof installation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many flat roof installation companies are there based in Canada?

RevenueBase identified 522 flat roof installation companies headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Bothwell Accurate Co. INC, headquartered in Mississauga, tops this list with the largest team on record.

Which city has the most flat roof installation companies?

Calgary leads with 46 headquartered companies, followed by Toronto (36) and Edmonton (20).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,056 verified decision-maker contacts tracked across these 522 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.