Company lists · Data refreshed September 2026

Top 25 Commercial waterproofing companies based in the United States

Name: Commercial waterproofing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 1,253 companies tracked

RevenueBase identified 1,253 commercial waterproofing companies headquartered in the United States as of September 2026 and tracks 14,447 professional contacts across them, including 4,253 with verified work emails. New York is the largest hub.

This list covers commercial waterproofing companies headquartered in the United States, 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 27, 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 27, 2026 86% judged on-target in blind review

1,253Companies

14,447Contacts tracked

4,253Verified emails

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The 25 largest commercial waterproofing companies based in the United States

Ranked by team size

Top 25 of 1,253 commercial waterproofing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to commercial waterproofing 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	Valcourt Group	Partial evidence	The Woodlands, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	409 contacts →
	Partial evidence “The Valcourt Group is one of the nation's leading providers of commercial building restoration, repair, and maintenance services.” Source: RevenueBase Database · checked Sep 27, 2026
2	Western Specialty Contractors	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 27, 2026	1,001-5,000	407 contacts →
	Indirect evidence “Western Specialty Contractors has been family-owned and operated since 1915, proudly serving clients nationwide with over 30+ branch offices.” Source: RevenueBase Database · checked Sep 27, 2026
3	Alpha Insulation & Waterproofing	Strong evidence	Marietta, GA, United StatesHQ checked Sep 27, 2026	501-1,000	335 contacts →
	Strong evidence “With over a quarter-century of experience in commercial insulation, waterproofing, spray fireproofing, spray foam insulation, and restoration, Alpha has served as the benchmark…” Source: RevenueBase Database · checked Sep 27, 2026
4	Chamberlin Roofing & Waterproofing	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	501-1,000	321 contacts →
	Partial evidence “Chamberlin Roofing & Waterproofing is an established specialty contractor that provides roofing and sheet metal, waterproofing and caulking, building and garage restoration, as…” Source: RevenueBase Database · checked Sep 27, 2026
5	Roof Services	Partial evidence	Deer Park, NY, United StatesHQ checked Sep 27, 2026	51-200	304 contacts →
	Partial evidence “Roof Services is a Commercial roofing contractor.” Source: RevenueBase Database · checked Sep 27, 2026
6	RAM Construction Services	Partial evidence	Livonia, MI, United StatesHQ checked Sep 27, 2026	501-1,000	288 contacts →
	Partial evidence “Founded in 1918, RAM Construction Services is the oldest and most experienced waterproofing and restoration contractor in the United States.” Source: RevenueBase Database · checked Sep 27, 2026
7	Siplast	Strong evidence	Arkadelphia, AR, United StatesHQ checked Sep 27, 2026	51-200	285 contacts →
	Strong evidence “Siplast is a recognized leader in high-performance commercial roofing, waterproofing, and building enclosure solutions, serving North America for over 50 years.” Source: RevenueBase Database · checked Sep 27, 2026
8	Eskola Roofing & Waterproofing	Partial evidence	Morristown, TN, United StatesHQ checked Sep 27, 2026	501-1,000	226 contacts →
	Partial evidence “With over 35 years in the roofing business, Eskola Roofing is a full-service roofing and waterproofing company.” Source: RevenueBase Database · checked Sep 27, 2026
9	EDA Contractors, INC	Partial evidence	Bensalem, PA, United StatesHQ checked Sep 27, 2026	201-500	193 contacts →
	Partial evidence “Founded in EDA Contractors holds an extensive portfolio and experience on the exterior envelope of commercial, institutional, and industrial buildings.” Source: RevenueBase Database · checked Sep 27, 2026
10	Greenwood Industries	Indirect evidence	Worcester, MA, United StatesHQ checked Sep 27, 2026	501-1,000	139 contacts →
	Indirect evidence “Greenwood Industries is the custom building envelope solutions company.” Source: RevenueBase Database · checked Sep 27, 2026
11	Snyder	Indirect evidence	Tigard, OR, United StatesHQ checked Sep 27, 2026	201-500	135 contacts →
	Indirect evidence “We are Snyder.” Source: RevenueBase Database · checked Sep 27, 2026
12	Beacon Waterproofing Products	Strong evidence	Jacksonville, FL, United StatesHQ checked Sep 27, 2026	51-200	133 contacts →
	Strong evidence “At Beacon Waterproofing, we’re the largest, nationwide distributor of commercial sealants and specialty waterproofing solutions.” Source: RevenueBase Database · checked Sep 27, 2026
13	Olshan Foundation Repair	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	201-500	113 contacts →
	Partial evidence “Olshan Foundation Solutions is the premier provider of foundation repair, waterproofing and related services in the markets it serves across the United States.” Source: RevenueBase Database · checked Sep 27, 2026
14	Cantey Foundation Specialists	Indirect evidence	Camden, SC, United StatesHQ checked Sep 27, 2026	51-200	112 contacts →
	Indirect evidence “Cantey Foundation Specialists: Where expertise meets peace of mind.” Source: RevenueBase Database · checked Sep 27, 2026
15	Helitech Waterproofing & Foundation Repair	Indirect evidence	Caseyville, IL, United StatesHQ checked Sep 27, 2026	201-500	105 contacts →
	Indirect evidence “Helitech is a locally-owned specialty contractor serving Arkansas, Illinois, Indiana, Iowa, Kansas, Kentucky, Missouri, Oklahoma, and Tennessee with a focus on faith and family.” Source: RevenueBase Database · checked Sep 27, 2026
16	LRT Restoration Technologies	Partial evidence	Monroe, OH, United StatesHQ checked Sep 27, 2026	201-500	99 contacts →
	Partial evidence “LRT Restoration Technologies is a premier specialty contractor with expertise in building envelope restoration, structural restoration, waterproofing, and industrial restoration.” Source: RevenueBase Database · checked Sep 27, 2026
17	Perma-Seal Basement Systems	Partial evidence	Burr Ridge, IL, United StatesHQ checked Sep 27, 2026	201-500	96 contacts →
	Partial evidence “For over 45 years, Perma-Seal has been the trusted name in basement waterproofing, foundation repair, concrete leveling, plumbing, and attic insulation throughout Chicagoland and…” Source: RevenueBase Database · checked Sep 27, 2026
18	GDA Contractors	Indirect evidence	Grand Prairie, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	93 contacts →
	Indirect evidence “In 1993 Daniel “George” Cain, Steven “D.” Wilson and Steven “Alan” Frank (ie.” Source: RevenueBase Database · checked Sep 27, 2026
19	Ayers Basement Systems	Partial evidence	Lansing, MI, United StatesHQ checked Sep 27, 2026	51-200	89 contacts →
	Partial evidence “Ayers Basement Systems is a family-owned, veteran-owned, and locally operated basement waterproofing and foundation repair contractor serving Michigan and Northern Indiana since…” Source: RevenueBase Database · checked Sep 27, 2026
20	'58 Foundations & Waterproofing	Partial evidence	Knoxville, NC, United StatesHQ checked Sep 27, 2026	201-500	83 contacts →
	Partial evidence “58 Foundations & Waterproofing, inventor of the interior basement waterproofing system, has been providing five-star customer experiences in basement waterproofing, crawlspace…” Source: RevenueBase Database · checked Sep 27, 2026
21	Woods Basement Systems, INC	Partial evidence	Collinsville, IL, United StatesHQ checked Sep 27, 2026	51-200	79 contacts →
	Partial evidence “In 1986, Rick and Anna Lee Woods, with a partner, started a waterproofing company called Basement DeWatering Systems Metro-East, Inc.” Source: RevenueBase Database · checked Sep 27, 2026
22	Ohio State Waterproofing	Partial evidence	Macedonia, OH, United StatesHQ checked Sep 27, 2026	51-200	78 contacts →
	Partial evidence “Ohio State Waterproofing has provided quality service with over successful waterproofing and foundation repair installations and satisfied customers since our inception in 1978.” Source: RevenueBase Database · checked Sep 27, 2026
23	Ohio Basement Authority	Indirect evidence	Twinsburg, OH, United StatesHQ checked Sep 27, 2026	5,001-10,000	76 contacts →
	Indirect evidence “Groundworks, formerly Ohio Basement Authority, was founded on a mission to protect, repair, and improve our customers’ greatest asset, their home.” Source: RevenueBase Database · checked Sep 27, 2026
24	C-Sharpe Co, LLC	Partial evidence	Orange Beach, AL, United StatesHQ checked Sep 27, 2026	51-200	75 contacts →
	Partial evidence “Serving the Gulf Coast since 1983, C-Sharpe Co, LLC specializes in complex building restoration and waterproofing of high-rise buildings and parking structures.” Source: RevenueBase Database · checked Sep 27, 2026
25	Giampolini Group	Indirect evidence	Emeryville, CA, United StatesHQ checked Sep 27, 2026	201-500	73 contacts →
	Indirect evidence “Giampolini & Co.” Source: RevenueBase Database · checked Sep 27, 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: commercial waterproofing 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 commercial waterproofing companies.
Partial evidence: Its own public description names part of commercial waterproofing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial waterproofing 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 1,253 commercial waterproofing companies based in the United States

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Commercial waterproofing companies based in the United States at a glance

As of Sep 27, 2026

29.4%Verified-email coverage

11.5Average contacts per company

11-50Median size (employees)

2.6%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

438

11-50

546

51-200

197

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,253 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 commercial waterproofing 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 the United States whose own description of what they do matches “commercial waterproofing 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 commercial waterproofing 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 commercial waterproofing companies, and records with no verified work email. Companies headquartered outside United States 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, 4,253 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 27, 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 commercial waterproofing 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 commercial waterproofing companies are there based in the United States?

RevenueBase identified 1,253 commercial waterproofing companies headquartered in the United States 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?

Valcourt Group, headquartered in The Woodlands, tops this list with the largest team on record.

Which city has the most commercial waterproofing companies?

New York leads with 33 headquartered companies, followed by Houston (20) and Dallas (17).

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 4,253 verified decision-maker contacts tracked across these 1,253 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 27, 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.