Company lists · Data refreshed September 2026

Top 25 Industrial maintenance companies based in Canada

Name: Industrial maintenance companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 313 companies tracked

RevenueBase identified 313 industrial maintenance companies headquartered in Canada as of September 2026 and tracks 3,245 professional contacts across them, including 965 with verified work emails. Quebec is the largest hub.

This list covers industrial maintenance 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 17, 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 17, 2026 86% judged on-target in blind review

313Companies

3,245Contacts tracked

965Verified emails

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The 25 largest industrial maintenance companies based in Canada

Ranked by team size

Top 25 of 313 industrial maintenance companies based in Canada, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial maintenance 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	Melloy Industrial Services INC	Strong evidence	Nisku, AB, CanadaHQ checked Sep 17, 2026	51-200	198 contacts →
	Strong evidence “Melloy Industrial is a trusted leader in heavy industrial maintenance, turnarounds, project execution and fabrication services across Canada.” Source: RevenueBase Database · checked Sep 17, 2026
2	Blais Industries INC	Indirect evidence	Rouyn-noranda, QC, CanadaHQ checked Sep 17, 2026	201-500	185 contacts →
	Indirect evidence “Notre leadership prend racine dans la compétence de nos techniciens, nos gestionnaires et nos administrateurs.” Source: RevenueBase Database · checked Sep 17, 2026
3	Team Group	Strong evidence	Aurora, ON, CanadaHQ checked Sep 17, 2026	1,001-5,000	137 contacts →
	Strong evidence “TEAM Group is a self-performing provider of industrial cleaning, integrated facility management, technical cleaning, facility maintenance, and specialized industrial services…” Source: RevenueBase Database · checked Sep 17, 2026
4	STI Maintenance	Partial evidence	Jonquière, QC, CanadaHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial evidence “For over 30 years, the team of more than 95 professionals at STI Maintenance has been providing maintenance management action plans to optimize your equipment and installations.” Source: RevenueBase Database · checked Sep 17, 2026
5	ROY	Indirect evidence	Anjou, QC, CanadaHQ checked Sep 17, 2026	1,001-5,000	92 contacts →
	Indirect evidence “Nous offrons une gamme complète de services intégrés d'entretien d'immeubles par l'intermédiaire de cinq filiales spécialisées et plus de 1 500 employés à votre service.” Source: RevenueBase Database · checked Sep 17, 2026
6	ACE Services Mécaniques	Indirect evidence	Val-d'or, CanadaHQ checked Sep 17, 2026	201-500	89 contacts →
	Indirect evidence “ACE SERVICES MÉCANIQUES ENTRETIEN MÉCANIQUE MOBILE!” Source: RevenueBase Database · checked Sep 17, 2026
7	EPM Mecanic	Indirect evidence	Laval, QC, CanadaHQ checked Sep 17, 2026	51-200	67 contacts →
	Indirect evidence “Les origines d’EPM Mecanic remontent à 1978, alors sous le nom d’E.P.M.” Source: RevenueBase Database · checked Sep 17, 2026
8	AIM Industrial INC	Strong evidence	Cambridge, ON, CanadaHQ checked Sep 17, 2026	201-500	67 contacts →
	Strong evidence “Industrial Multi-Trade Contracting, Construction and Maintenance Offering Millwrighting, CWB Welding, Rigging, Ironwork, Electrical, Safety and Programming, Sheet Metal…” Source: RevenueBase Database · checked Sep 17, 2026
9	Process Group INC	Partial evidence	Cambridge, ON, CanadaHQ checked Sep 17, 2026	201-500	66 contacts →
	Partial evidence “Process Group Welcome to Industry's single source end-to-end supplier of engineering, procurement, construction and maintenance services to manufacturing plants, process equipment…” Source: RevenueBase Database · checked Sep 17, 2026
10	Whiterose Janitorial Services	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 17, 2026	501-1,000	64 contacts →
	Indirect evidence “Whiterose Janitorial Services Ltd.” Source: RevenueBase Database · checked Sep 17, 2026
11	Duke Electric	Indirect evidence	Hamilton, CanadaHQ checked Sep 17, 2026	11-50	54 contacts →
	Indirect evidence “If your electrical equipment is more of a pain in the ass than an asset, it’s time to call Duke.” Source: RevenueBase Database · checked Sep 17, 2026
12	PSL Patrick Sprack LTD	Indirect evidence	Sudbury, ON, CanadaHQ checked Sep 17, 2026	51-200	51 contacts →
	Indirect evidence “PSL is one of the fastest growing mechanical service providers in Northern Ontario.” Source: RevenueBase Database · checked Sep 17, 2026
13	COGEP	Strong evidence	Quebec Canada, CanadaHQ checked Sep 17, 2026	11-50	51 contacts →
	Strong evidence “About COGEP, Intelligent Maintenance, Simplified COGEP partners with maintenance and operations leaders in complex industrial environments.” Source: RevenueBase Database · checked Sep 17, 2026
14	Uptime	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “INSTALL.” Source: RevenueBase Database · checked Sep 17, 2026
15	Fluordriver	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 17, 2026	501-1,000	47 contacts →
	Partial evidence “Fluor Driver is a recognized leader in plant maintenance, turnarounds, small capital – and particularly safety – across Canada.” Source: RevenueBase Database · checked Sep 17, 2026
16	Oslo Construction	Partial evidence	Terrebonne, QC, CanadaHQ checked Sep 17, 2026	51-200	44 contacts →
	Partial evidence “Depuis sa création dans les années 90, Oslo Construction est devenue progressivement l’une des plus importantes compagnies dans le domaine de la mécanique industrielle au Québec.” Source: RevenueBase Database · checked Sep 17, 2026
17	Soucy Industriel	Partial evidence	Rivière-du-loup, QC, CanadaHQ checked Sep 17, 2026	201-500	39 contacts →
	Partial evidence “SOUCY INDUSTRIEL se démarque dans les secteurs miniers, industriels et navales par son savoir-faire hautement spécialisé dans l’exécution de travaux majeurs sur les équipements de…” Source: RevenueBase Database · checked Sep 17, 2026
18	Matcom	Partial evidence	Vaughan, ON, CanadaHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “Matcom is a diverse company providing turnkey solutions for industrial machinery in the Greater Toronto Area and worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
19	Bullet Trade Services	Partial evidence	Puslinch, ON, CanadaHQ checked Sep 17, 2026	51-200	37 contacts →
	Partial evidence “With pride, we stand as one of the most prominent industrial services and millwrighting contractors in the province.” Source: RevenueBase Database · checked Sep 17, 2026
20	SDA Building Services INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 17, 2026	201-500	36 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
21	Mader Group Canada	Partial evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	51-200	36 contacts →
	Partial evidence “Mader are heavy equipment maintenance experts delivering quality repairs, preventative maintenance and expert diagnostics.” Source: RevenueBase Database · checked Sep 17, 2026
22	Neutron Factory Works INC	Indirect evidence	Delta, BC, CanadaHQ checked Sep 17, 2026	11-50	35 contacts →
	Indirect evidence “At Neutron we specialize in ensuring your production lines run uninterrupted.” Source: RevenueBase Database · checked Sep 17, 2026
23	Terrafirma Resources	Partial evidence	Clearwater County, AB, CanadaHQ checked Sep 17, 2026	51-200	33 contacts →
	Partial evidence “Terrafirma is an Alberta pipeline, facility, mechanical and oilfield maintenance company servicing the oil industry throughout Western Canada.” Source: RevenueBase Database · checked Sep 17, 2026
24	Ambassador Building Maintenance Limited	Partial evidence	Windsor, ON, CanadaHQ checked Sep 17, 2026	51-200	26 contacts →
	Partial evidence “ABM has been Windsor and Essex County's Building Maintenance leader Since 1960.” Source: RevenueBase Database · checked Sep 17, 2026
25	Mécanique Industrielle Fortier ET Fils Miff	Partial evidence	La Prairie, QC, CanadaHQ checked Sep 17, 2026	51-200	24 contacts →
	Partial evidence “Mécanique Industrielle Fortier et Fils inc.” Source: RevenueBase Database · checked Sep 17, 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: industrial maintenance 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 industrial maintenance companies.
Partial evidence: Its own public description names part of industrial maintenance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial maintenance 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 313 industrial maintenance companies based in Canada

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Industrial maintenance companies based in Canada at a glance

As of Sep 17, 2026

29.7%Verified-email coverage

10.4Average contacts per company

11-50Median size (employees)

5.4%Largest-city concentration · Quebec

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

134

11-50

108

51-200

201-500

501-1,000

1,001-5,000

10001+

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 313 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 industrial maintenance 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 “industrial maintenance 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 industrial maintenance 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 industrial maintenance 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, 965 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 17, 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.

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 industrial maintenance 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 industrial maintenance companies are there based in Canada?

RevenueBase identified 313 industrial maintenance 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?

Melloy Industrial Services INC, headquartered in Nisku, tops this list with the largest team on record.

Which city has the most industrial maintenance companies?

Quebec leads with 17 headquartered companies, followed by Toronto (16) and Calgary (15).

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 965 verified decision-maker contacts tracked across these 313 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 17, 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.