Company lists · Data refreshed September 2026

Top 25 Natural weatherproofing companies based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 150 companies tracked

RevenueBase identified 150 natural weatherproofing companies headquartered in Canada as of September 2026 and tracks 1,582 professional contacts across them, including 715 with verified work emails. Toronto is the largest hub.

This list covers natural weatherproofing 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 29, 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 29, 2026 86% judged on-target in blind review

150Companies

1,582Contacts tracked

715Verified emails

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The 25 largest natural weatherproofing companies based in Canada

Ranked by team size

Top 25 of 150 natural weatherproofing companies based in Canada, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to natural weatherproofing 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	Soprema Canada	Indirect evidence	Drummondville, QC, CanadaHQ checked Sep 29, 2026	1,001-5,000	591 contacts →
	Indirect evidence “Depuis 1908, SOPREMA protège les espaces de vie et améliore le bien-être des individus grâce à des solutions durables et innovantes d’étanchéité, d’isolation, de végétalisation et…” Source: RevenueBase Database · checked Sep 29, 2026
2	Bothwell Accurate Co. INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 29, 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 29, 2026
3	Elastochem	Indirect evidence	Brantford, ON, CanadaHQ checked Sep 29, 2026	51-200	48 contacts →
	Indirect evidence “Elastochem is a Canadian leader of building enclosure solutions, ranging from waterproofing and restoration systems to polyurethane foam insulation.” Source: RevenueBase Database · checked Sep 29, 2026
4	Toitures Trois Étoiles INC	Indirect evidence	Lasalle, QC, CanadaHQ checked Sep 29, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
5	Owens Corning Canada	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 29, 2026	n/a	42 contacts →
	Indirect evidence “If you’re looking for smart, energy-saving insulation solutions, you've come to the right place.” Source: RevenueBase Database · checked Sep 29, 2026
6	Durabond Products LTD	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 29, 2026	11-50	33 contacts →
	Indirect evidence “Durabond Products Limited, established in 1967 and headquartered in Toronto, Ontario, Canada, is a leader in the manufacturing and development of specialized Architectural Wall…” Source: RevenueBase Database · checked Sep 29, 2026
7	Isolation Algon 2000	Indirect evidence	Laval, QC, CanadaHQ checked Sep 29, 2026	51-200	21 contacts →
	Indirect evidence “Isolation Algon Inc est une entreprise familiale possédant plus de 40 années d'expérience dans le domaine de la Construction.” Source: RevenueBase Database · checked Sep 29, 2026
8	O'reilly Brothers LTD	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 29, 2026	11-50	20 contacts →
	Indirect evidence “O'Reilly Brothers is the industry-leading insulation contractor in Eastern Ontario, specializing in sprayed polyurethane foam insulation, blown cellulose insulation, vermiculite…” Source: RevenueBase Database · checked Sep 29, 2026
9	Beyond Group	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 29, 2026	51-200	18 contacts →
	Indirect evidence “We are an established Calgary Insulation contractor.” Source: RevenueBase Database · checked Sep 29, 2026
10	Isolation Confort C.O	Indirect evidence	Terrebonne, QC, CanadaHQ checked Sep 29, 2026	51-200	18 contacts →
	Indirect evidence “L'isolation et l’étanchéité résidentielle et commerciale depuis 1979 Commercial & Résidentiel Nous sommes spécialisés en isolation de bâtiment, du sous-sol au grenier, mais aussi…” Source: RevenueBase Database · checked Sep 29, 2026
11	Isolation Hizo INC	Indirect evidence	Laval, QC, CanadaHQ checked Sep 29, 2026	51-200	17 contacts →
	Indirect evidence “HIZO se positionne comme un leader dans les secteurs de l'enveloppe du bâtiment, de l'imperméabilisation de fondations et de l'ignifugation, desservant une clientèle variée dans…” Source: RevenueBase Database · checked Sep 29, 2026
12	Solution Isolation	Indirect evidence	Beloeil, QC, CanadaHQ checked Sep 29, 2026	11-50	17 contacts →
	Indirect evidence “About us At Solution Isolation, we pride ourselves on providing exceptional insulation solutions to homeowners across Québec As a company dedicated to energy efficiency and…” Source: RevenueBase Database · checked Sep 29, 2026
13	Strong Foam Insulation INC	Indirect evidence	Cambridge, ON, CanadaHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Strong Foam Insulation’s journey began in the ICI and multi-unit residential sector in 2016, and has quickly evolved as a leading force within the spray foam, fire protection and…” Source: RevenueBase Database · checked Sep 29, 2026
14	Trugrp INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Building envelope restoration, waterproofing and residential construction company based in Mississauga Ontario.” Source: RevenueBase Database · checked Sep 29, 2026
15	Mongrain	Indirect evidence	Laval, QC, CanadaHQ checked Sep 29, 2026	51-200	15 contacts →
	Indirect evidence “Expert en Enveloppe du Bâtiment depuis Trois Générations.Mongrain (spécialiste en isolation) sert ses clients depuis près de 60 ans.” Source: RevenueBase Database · checked Sep 29, 2026
16	Isolation Majeau ET Frère INC	Indirect evidence	Saint-esprit, QC, CanadaHQ checked Sep 29, 2026	11-50	14 contacts →
	Indirect evidence “Isolation Majeau et frère est un entrepreneur spécialisé en isolation thermique de bâtiment résidentiel, commercial et agricole depuis 1992.” Source: RevenueBase Database · checked Sep 29, 2026
17	Standard Insulation Siding Drywall	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 29, 2026	201-500	12 contacts →
	Indirect evidence “Standard Insulation and Siding is one of the oldest and largest insulation & siding companies in the Lower Mainland, proudly serving the industry since 1989.” Source: RevenueBase Database · checked Sep 29, 2026
18	Great Canadian Exteriors Corporation	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 29, 2026	51-200	11 contacts →
	Indirect evidence “Great Canadian Exteriors takes great pride in our understanding of the construction industry landscape and our successful projects.” Source: RevenueBase Database · checked Sep 29, 2026
19	Isolation Multi-Services	Indirect evidence	Laval, QC, CanadaHQ checked Sep 29, 2026	11-50	11 contacts →
	Indirect evidence “Chef de file dans le domaine de l'isolation, Isolation Multi-Services s'efforce d'offrir un excellent service à prix concurrentiel.” Source: RevenueBase Database · checked Sep 29, 2026
20	Insulation Snakes	Indirect evidence	Breton, AB, CanadaHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “Insulation Snakes® is a North American manufacturer and wholesale distributer of innovative and environmentally friendly insulation products that are removable, reusable, and…” Source: RevenueBase Database · checked Sep 29, 2026
21	Libra Envelope	Indirect evidence	Port Coquitlam, BC, CanadaHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “LIBRA Envelope provides solutions for commercial and residential waterproofing, roofing, repairs and maintenance for Property Management using the world’s best brands available.” Source: RevenueBase Database · checked Sep 29, 2026
22	Protech Roofing Waterproofing LTD	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “Waterproofing Company” Source: RevenueBase Database · checked Sep 29, 2026
23	Westcor Thermal INC	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 29, 2026	51-200	8 contacts →
	Indirect evidence “Westcor Thermal: Trusted Insulation Services in WESTERN CANADA When it comes to fireproofing, no decision should be taken lightly.” Source: RevenueBase Database · checked Sep 29, 2026
24	Isolation Air-Plus INC	Indirect evidence	Québec, QC, CanadaHQ checked Sep 29, 2026	51-200	7 contacts →
	Indirect evidence “Depuis 1976, Isolation Air-Plus offre des services d'isolation, d'insonorisation, d’ignifugation et d’étanchéisation dans les secteurs résidentiel, commercial et industriel.” Source: RevenueBase Database · checked Sep 29, 2026
25	Isolation 4 Saisons INC	Indirect evidence	Repentigny, QC, CanadaHQ checked Sep 29, 2026	11-50	7 contacts →
	Indirect evidence “Isolation 4 Saisons \| Votre partenaire en isolation au Québec Depuis près de 30 ans, Isolation 4 Saisons accompagne les entrepreneurs généraux, promoteurs, professionnels de la…” Source: RevenueBase Database · checked Sep 29, 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: natural weatherproofing 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 natural weatherproofing companies.
Partial evidence: Its own public description names part of natural weatherproofing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name natural weatherproofing 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 150 natural weatherproofing companies based in Canada

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Natural weatherproofing companies based in Canada at a glance

As of Sep 29, 2026

45.2%Verified-email coverage

10.5Average contacts per company

1-10Median size (employees)

6.0%Largest-city concentration · Toronto

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 150 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 natural weatherproofing 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 “natural weatherproofing 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 natural weatherproofing 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 natural weatherproofing 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, 715 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 29, 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 natural weatherproofing 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 natural weatherproofing companies are there based in Canada?

RevenueBase identified 150 natural weatherproofing 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?

Soprema Canada, headquartered in Drummondville, tops this list with the largest team on record.

Which city has the most natural weatherproofing companies?

Toronto leads with 9 headquartered companies, followed by Calgary (6) and Edmonton (5).

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 715 verified decision-maker contacts tracked across these 150 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 29, 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.