Company lists · Data refreshed October 2026

Top 25 Building envelope sealing companies based in Canada

Name: Building envelope sealing companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 318 companies tracked

RevenueBase identified 318 company matches for building envelope sealing companies associated with Canada as of October 2026 and tracks 6,471 professional contacts across them, including 2,611 with verified work emails. Toronto is the largest hub.

This list covers company matches for building envelope sealing companies associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 9, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 9, 2026 How this list was built

318Companies

6,471Contacts tracked

2,611Verified emails

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The 25 largest building envelope sealing companies based in Canada

Ranked by team size

Top 25 of 318 company matches for building envelope sealing companies based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Flynn Group Of Companies	Exact match	Mississauga, ON, CanadaHQ recorded Oct 9, 2026	5,001-10,000	1,991 contacts →
	Exact match “The Flynn Group of Companies is North America's leading building envelope trade contractor.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Soprema Canada	Exact match	Drummondville, QC, CanadaHQ recorded Oct 9, 2026	1,001-5,000	597 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Bothwell Accurate Co. INC	Exact match	Mississauga, ON, CanadaHQ recorded Oct 9, 2026	201-500	299 contacts →
	Exact match “Bothwell-Accurate is one of the oldest and most experienced companies providing Roofing and Waterproofing services to Industrial, Commercial and Institutional buildings in the…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Thermal Systems	Exact match	Rocky View County, AB, CanadaHQ recorded Oct 9, 2026	201-500	176 contacts →
	Exact match “Thermal Systems is a building envelope, mechanical insulation, roofing and daylighting subcontractor.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Groupe Lessard	Exact match	Laval, QC, CanadaHQ recorded Oct 9, 2026	201-500	153 contacts →
	Exact match “Groupe Lessard is the leader in design, manufacturing and installation of intelligent building envelope systems, with a complete range of doors and windows, curtain walls and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Great Northern Insulation	Exact match	Woodstock, ON, CanadaHQ recorded Oct 9, 2026	201-500	132 contacts →
	Exact match “Founded in 1980, Great Northern Insulation is Ontario's leading building envelope service provider, for the new construction and retrofit markets across commercial, institutional…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Thermo Design Insulation LTD	Exact match	Edmonton, AB, CanadaHQ recorded Oct 9, 2026	201-500	92 contacts →
	Exact match “Over Forty Years of Tradition & Excellence Since 1981, Thermo Design Insulation (TDI) has been providing insulated metal panel solutions to various construction markets across…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Garland Canada INC	Exact match	Etobicoke, ON, CanadaHQ recorded Oct 9, 2026	51-200	89 contacts →
	Exact match “For over a century, Garland offers high performance roofing and building envelope solutions that exceed today’s requirements.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Desa Glass	Exact match	Rocky View County, AB, CanadaHQ recorded Oct 9, 2026	51-200	69 contacts →
	Exact match “DESA Glass is a premier facade contractor shaping the built environment across Western Canada.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Dörken Systems INC	Exact match	Beamsville, ON, CanadaHQ recorded Oct 9, 2026	51-200	62 contacts →
	Exact match “After 125 years in over 60 countries, our DELTA® brand is known for delivering innovative, high-performance air- and moisture-barriers for commercial and residential construction.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Cascade Aqua-Tech LTD	Exact match	Burnaby, BC, CanadaHQ recorded Oct 9, 2026	51-200	52 contacts →
	Exact match “Cascade Aqua-Tech was founded in 1987 as a family-based business serving the window industry in the Vancouver area, specializing in foam tape for glazing, Cascade has grown and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	BC Building Science LTD	Exact match	Vancouver, CanadaHQ recorded Oct 9, 2026	11-50	50 contacts →
	Exact match “BC Building Science is a professional engineering firm, specializing in building envelope durability and energy efficiency.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Elastochem	Exact match	Brantford, ON, CanadaHQ recorded Oct 9, 2026	51-200	49 contacts →
	Exact match “Elastochem is a Canadian leader of building enclosure solutions, ranging from waterproofing and restoration systems to polyurethane foam insulation.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Remdal	Exact match	Surrey, BC, CanadaHQ recorded Oct 9, 2026	51-200	48 contacts →
	Exact match “Remdal specializes in building envelope, repainting and related construction projects.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Taylor Construction	Exact match	Calgary, AB, CanadaHQ recorded Oct 9, 2026	51-200	48 contacts →
	Exact match “When it comes to "building envelope", simply getting the job done isn't enough.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Keith Panel Systems Co. LTD	Exact match	Burnaby, BC, CanadaHQ recorded Oct 9, 2026	51-200	46 contacts →
	Exact match “Keith Panel Systems is a leading innovator, fabricator, and installer of architectural exterior wall systems.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Toitures Trois Étoiles INC	Exact match	Lasalle, QC, CanadaHQ recorded Oct 9, 2026	201-500	44 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Nedlaw Group	Exact match	Breslau, ON, CanadaHQ recorded Oct 9, 2026	51-200	43 contacts →
	Exact match “Since the company was established in 1988, Nedlaw has developed a long history of innovation, leadership and industry influence.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	Ferguson Corporation	Exact match	Calgary, CanadaHQ recorded Oct 9, 2026	51-200	42 contacts →
	Exact match “We Build Beauty into Buildings!” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Unitiwall Corporation	Exact match	Mississauga, ON, CanadaHQ recorded Oct 9, 2026	51-200	41 contacts →
	Exact match “UnitiWall is a Mississauga‑based manufacturer of high‑performance, prefabricated building envelope systems for new construction and retrofit projects.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Frost Building Systems	Exact match	Brantford, ON, CanadaHQ recorded Oct 9, 2026	51-200	40 contacts →
	Exact match “Since 1994, Frost has grown to be one of Canada’s leading building envelope trade Specialty Contractor, with accomplished expertise in cold storage construction and cladding.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	LAING	Exact match	Kelowna, BC, CanadaHQ recorded Oct 9, 2026	51-200	39 contacts →
	Exact match “Founded in 1987, LAING provides roofing, sheetmetal, waterproofing and panel system installations for commercial, industrial and large scale residential projects.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	CCS Contracting LTD	Exact match	Edmonton, AB, CanadaHQ recorded Oct 9, 2026	201-500	37 contacts →
	Exact match “Since 1985, we have established ourselves as one of the premier contractors in the region.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Prostar Contracting	Exact match	Burnaby, BC, CanadaHQ recorded Oct 9, 2026	51-200	36 contacts →
	Exact match “Prostar has earned a reputation as one of Vancouver's most recognized premier commercial renovators and exterior envelope contractors in BC.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Durabond Products LTD	Exact match	Toronto, ON, CanadaHQ recorded Oct 9, 2026	11-50	34 contacts →
	Exact match “Durabond Products Limited, established in 1967 and headquartered in Toronto, Ontario, Canada, is a leader in the manufacturing and development of specialized Architectural Wall…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “building envelope sealing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 318 building envelope sealing companies based in Canada

See the full list, filter by size, metro and specialty, and access 2,611 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building envelope sealing companies based in Canada at a glance

As of Oct 9, 2026

40.3%Verified-email coverage

20.3Average contacts per company

11-50Median size (employees)

8.2%Largest-city concentration · Toronto

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

112

11-50

127

51-200

201-500

1,001-5,000

5,001-10,000

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 318 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Canada whose business descriptions match “building envelope sealing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,611 professional contacts with verified work emails across the full matched dataset. 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 October 9, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Building envelope sealing companies by metro

Building envelope sealing companies in Toronto26

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “building envelope sealing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building envelope sealing companies are there based in Canada?

RevenueBase identified 318 company matches for building envelope sealing companies associated with Canada as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Flynn Group Of Companies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most building envelope sealing companies?

Toronto leads with 26 company records, followed by Calgary (24) and Mississauga (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,611 professional contacts with verified work emails tracked across these 318 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 9, 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 SmartSearch, 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.