Company lists · Data refreshed October 2026

Top 25 Building envelope sealing contractors based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 296 companies tracked

RevenueBase identified 296 company matches for building envelope sealing contractors associated with Canada as of October 2026 and tracks 5,090 professional contacts across them, including 1,997 with verified work emails. Calgary is the largest hub.

This list covers company matches for building envelope sealing contractors 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

296Companies

5,090Contacts tracked

1,997Verified emails

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The 25 largest building envelope sealing contractors based in Canada

Ranked by team size

Top 25 of 296 company matches for building envelope sealing contractors 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	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	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
13	Owens Corning Canada	Exact match	Toronto, ON, CanadaHQ recorded Oct 9, 2026	n/a	44 contacts →
	Exact match “If you’re looking for smart, energy-saving insulation solutions, you've come to the right place.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	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
15	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
16	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
17	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
18	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
19	Multiseal	Exact match	Toronto, ON, CanadaHQ recorded Oct 9, 2026	51-200	33 contacts →
	Exact match “Contracting in the construction industries, including; Complete Thermal and Moisture Protection for high rise structures, Asphalt Services including paving, granulars bases…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Building Technologies Consulting INC	Exact match	Ottawa, ON, CanadaHQ recorded Oct 9, 2026	11-50	31 contacts →
	Exact match “Building Technologies Consulting Inc.(BTC Group) is a Building Science Engineering firm, improving buildings and properties across Canada and internationally.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Villa Roofing & Sheet Metal	Exact match	Vancouver (se Oakridge / East Marpole / South Sunset), BC, CanadaHQ recorded Oct 9, 2026	51-200	30 contacts →
	Exact match “Villa Roofing is British Columbia's industry leader in Roofing and Waterproofing systems for medium to large-scale Multi-Family Residential, Commercial, Industrial and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Northern Caulking INC	Exact match	Mississauga, ON, CanadaHQ recorded Oct 9, 2026	51-200	29 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Peridot Supply INC	Exact match	Brampton, ON, CanadaHQ recorded Oct 9, 2026	11-50	27 contacts →
	Exact match “The Peridot Gem is deemed to emit positive energy and to channel abundance.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Tri-Tech Pinnacle Group	Exact match	Aurora, ON, CanadaHQ recorded Oct 9, 2026	11-50	27 contacts →
	Exact match “Tri-Tech Pinnacle Group is experienced with all types of roofing products and systems.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Guildfords	Exact match	Dartmouth, NS, CanadaHQ recorded Oct 9, 2026	51-200	27 contacts →
	Exact match “Guildfords was founded in 1906 focusing on insulation services and is North America’s oldest insulation contracting company.” 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 contractors”. 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 296 building envelope sealing contractors based in Canada

See the full list, filter by size, metro and specialty, and access 1,997 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building envelope sealing contractors based in Canada at a glance

As of Oct 9, 2026

39.2%Verified-email coverage

17.2Average contacts per company

11-50Median size (employees)

7.1%Largest-city concentration · Calgary

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

117

11-50

117

51-200

201-500

5,001-10,000

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 296 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 contractors” 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 1,997 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.

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 contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 296 company matches for building envelope sealing contractors 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 contractors?

Calgary leads with 21 company records, followed by Toronto (20) and Vancouver (14).

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 1,997 professional contacts with verified work emails tracked across these 296 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.