Company lists · Data refreshed September 2026

Top 25 Foundation waterproofing contractors based in Canada

Name: Foundation waterproofing contractors based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 218 companies tracked

RevenueBase identified 218 foundation waterproofing contractors headquartered in Canada as of September 2026 and tracks 1,561 professional contacts across them, including 554 with verified work emails. Toronto is the largest hub.

This list covers foundation waterproofing contractors 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 28, 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 28, 2026 86% judged on-target in blind review

218Companies

1,561Contacts tracked

554Verified emails

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The 25 largest foundation waterproofing contractors based in Canada

Ranked by team size

Top 25 of 218 foundation waterproofing contractors based in Canada, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to foundation waterproofing contractors: 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	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 28, 2026	201-500	301 contacts →
	Partial 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 28, 2026
2	Xypex Chemical Corporation	Partial evidence	Richmond, BC, CanadaHQ checked Sep 28, 2026	201-500	126 contacts →
	Partial evidence “For more than 50 years, proprietary Xypex Crystalline Technology has set an international standard of excellence in concrete waterproofing.” Source: RevenueBase Database · checked Sep 28, 2026
3	Duron Ontario LTD	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 28, 2026	51-200	91 contacts →
	Partial evidence “Duron Ontario was founded in 1959 and provides a range of construction specialties including structural rehabilitation, waterproofing, mastic, concrete finishing and specialized…” Source: RevenueBase Database · checked Sep 28, 2026
4	Toiture Couture	Indirect evidence	St-hubert, QC, CanadaHQ checked Sep 28, 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 28, 2026
5	Toitures Trois Étoiles INC	Indirect evidence	Lasalle, QC, CanadaHQ checked Sep 28, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
6	Couverture Montréal Nord	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 28, 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 28, 2026
7	Multiseal	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	51-200	32 contacts →
	Indirect evidence “Contracting in the construction industries, including; Complete Thermal and Moisture Protection for high rise structures, Asphalt Services including paving, granulars bases…” Source: RevenueBase Database · checked Sep 28, 2026
8	Villa Roofing & Sheet Metal	Partial evidence	Vancouver (se Oakridge / East Marpole / South Sunset), BC, CanadaHQ checked Sep 28, 2026	51-200	31 contacts →
	Partial 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 28, 2026
9	DWS Roofing And Waterproofing Services INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 28, 2026	51-200	25 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
10	Nusite Contractors LTD	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “Established in 1991, Nusite has been serving commercial and residential clients for over 30 years.” Source: RevenueBase Database · checked Sep 28, 2026
11	Advanced Basement Systems	Indirect evidence	Chatham, ON, CanadaHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Advanced Basement Systems is your local, and family owned basement and crawl space specialists.” Source: RevenueBase Database · checked Sep 28, 2026
12	Isolation Confort C.O	Indirect evidence	Terrebonne, QC, CanadaHQ checked Sep 28, 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 28, 2026
13	Isolation Hizo INC	Indirect evidence	Laval, QC, CanadaHQ checked Sep 28, 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 28, 2026
14	Trugrp INC	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Building envelope restoration, waterproofing and residential construction company based in Mississauga Ontario.” Source: RevenueBase Database · checked Sep 28, 2026
15	Wise Cracks	Indirect evidence	Halifax, NS, CanadaHQ checked Sep 28, 2026	51-200	16 contacts →
	Indirect evidence “Since 1991 Wise Cracks has been providing residential and commercial property owners with advice and repairs for fixing leaking basements, namely crack repairs.” Source: RevenueBase Database · checked Sep 28, 2026
16	Abalon Construction Edmonton	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Abalon Construction has provided residential and commercial foundation repair services (Foundation Crack & Seepage repairs, a wide-range of Commercial and Residential…” Source: RevenueBase Database · checked Sep 28, 2026
17	Penguin Basements, LTD	Indirect evidence	North York, ON, CanadaHQ checked Sep 28, 2026	51-200	16 contacts →
	Indirect evidence “Penguin Basements is a full-service Basement Renovation Company.” Source: RevenueBase Database · checked Sep 28, 2026
18	Mongrain	Indirect evidence	Laval, QC, CanadaHQ checked Sep 28, 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 28, 2026
19	Polycrete Restorations	Partial evidence	Coquitlam, BC, CanadaHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Providing Structural Restoration & Waterproofing Services Since the 70's.” Source: RevenueBase Database · checked Sep 28, 2026
20	Transcanada Roofing And Waterproofing LTD	Indirect evidence	St-léonard, QC, CanadaHQ checked Sep 28, 2026	51-200	14 contacts →
	Indirect evidence “Our company, founded in 1973, operates primarily in the metropolitan area of Montreal and its surrounding cities.” Source: RevenueBase Database · checked Sep 28, 2026
21	Restruction Group	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “Restruction provides full scope building envelope restoration services as both General Contractor and/or Construction Managers allowing us to be a single and reliable source for…” Source: RevenueBase Database · checked Sep 28, 2026
22	Imperco CSM INC	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Imperco CSM est LE spécialiste de l'imperméabilisation et protection du béton au Québec.” Source: RevenueBase Database · checked Sep 28, 2026
23	Perma-Dry	Indirect evidence	Porters Lake, NS, CanadaHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “The “Aha Moment” That Changed Everything It was the early 80’s and Bill Cole was enduring the telephone rant of another unsatisfied customer.” Source: RevenueBase Database · checked Sep 28, 2026
24	Afcg Construction INC	Strong evidence	Rocky View County, AB, CanadaHQ checked Sep 28, 2026	51-200	11 contacts →
	Strong evidence “AFCG Construction Inc operates across the country and specializes in all kinds of home renovation, commercial renovations, New built, remodeling, waterproofing, foundation and…” Source: RevenueBase Database · checked Sep 28, 2026
25	Registon Building Restoration LTD	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Reviving structures with expertise & dedication.” Source: RevenueBase Database · checked Sep 28, 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: foundation waterproofing contractors. 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 foundation waterproofing contractors.
Partial evidence: Its own public description names part of foundation waterproofing contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name foundation waterproofing contractors. 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 218 foundation waterproofing contractors based in Canada

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Foundation waterproofing contractors based in Canada at a glance

As of Sep 28, 2026

35.5%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

10.6%Largest-city concentration · Toronto

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

105

11-50

51-200

201-500

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 218 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 foundation waterproofing contractors, 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 “foundation waterproofing contractors”. 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 foundation waterproofing contractors), 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 foundation waterproofing contractors, 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, 554 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 28, 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 foundation waterproofing contractors, 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 foundation waterproofing contractors are there based in Canada?

RevenueBase identified 218 foundation waterproofing contractors 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 foundation waterproofing contractors?

Toronto leads with 23 headquartered companies, followed by Mississauga (13) and Calgary (9).

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 554 verified decision-maker contacts tracked across these 218 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 28, 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.