Find and Invite the Best Commercial Waterproofing Contractors in Ontario, CA

Tired of outdated contact lists and the hassle of calling to check bidding intent? Simplify your bidding process with Downtobid's modern commercial contractor database. Access up-to-date, vetted profiles and ensure you connect with the right trades.

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70 Verified Waterproofing companies in Ontario, CA

Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.

JB3 Epoxy Injection & Synthetic Coatings Specialist logo

JB3 Epoxy Injection & Synthetic Coatings Specialist

Oakdale, CA 95361

JB3 Epoxy Injection & Synthetic Coatings Specialist, Inc. is a company specializing in concrete restoration and waterproofing services, including epoxy and urethane injections, caulking, and various coatings for balconies, decks, and below-grade structures, serving the Central Valley and surrounding areas of California with a commitment to quality craftsmanship and professional standards.

Verified


295 miles from Ontario, CA

Specializations (1)

Infrastructure

Website

Call

WebsiteCall
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W S Caulking & Waterproofing logo

W S Caulking & Waterproofing

3280 W Hacienda Ave, Las Vegas, NV 89118

W S Caulking & Waterproofing LLC is a company specializing in commercial caulking and waterproofing services across Nevada, Utah, and Northern Arizona, with a focus on caulking joints, joint sealants, grade waterproofing, dampproofing, and fire-rated joint systems.

Verified


166 miles from Ontario, CA
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King Roofing logo

King Roofing

Patterson, CA 95363

King’s Roofing, established in 1989 by David King, is a premier industrial and commercial roofing contractor serving Central and Northern California. With a commitment to the highest quality and safety standards, they specialize in new and retrofit roofing systems, emergency repair services, waterproofing, and general maintenance.

Verified


295 miles from Ontario, CA

Specializations (5)

Education

Healthcare

Higher education

Hospitality

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Tarlton and Son logo

Tarlton and Son

Fresno, CA 93740

Tarlton and Son Inc. is a construction company that provides a unique Frame-2-Finish wall solution, reducing build time and offering the best value. Founded in 1977 by Tom Tarlton, the company is known for its award-winning mentality, unmatched work ethic, and commitment to safety and quality workmanship.

Verified


198 miles from Ontario, CA

Specializations (13)

Airport

Casino

Education

Government

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Raider Painting logo

Raider Painting

Merced, CA 95348

Raider Painting is a premier painting company that provides a range of services including deck and floor coatings, structural steel and machinery coatings, tank lining and coatings, and interior and exterior waterproofing. Established in 1983, the company serves a variety of industries across the U.S., with a focus on California and the Western U.S.

Verified


263 miles from Ontario, CA

Specializations (13)

Airport

Education

Fitness

Healthcare

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Alcal Specialty Contracting logo

Alcal Specialty Contracting

Phoenix, AZ 85040

Alcal Specialty Contracting, Inc. is a company with over 50 years of contracting excellence, providing roofing, waterproofing, insulation, fire protection, residential and commercial garage doors, weather barriers, and expansion joints, with a commitment to quality products and services.

Verified


255 miles from Ontario, CA

Specializations (13)

Airport

Education

Financial

Healthcare

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1604 Specialties logo

1604 Specialties

Chandler, AZ 85248

1604 Specialties LLC is a family-owned business in Arizona providing a full range of interior and exterior insulation, fireproofing, and waterproofing services tailored to commercial general contractors' needs, with a focus on quality application processes and competitive pricing.

Verified


255 miles from Ontario, CA

Specializations (2)

Office Building

Warehouse

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Brazos Thermal Systems logo

Brazos Thermal Systems

Madera, CA 93638

Brazos Thermal Systems, Inc. is a roofing and insulation contractor that provides services such as roofing, insulation, and waterproofing for commercial, industrial, public works, and residential projects. The company specializes in open and closed cell spray foam insulation and operates in seven Western U.S. states.

Verified


234 miles from Ontario, CA

Specializations (7)

Education

Federal Government

Government

Higher education

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Johnson Statewide Caulking logo

Johnson Statewide Caulking

3747 E Grove St, Phoenix, AZ 85040

Johnson Statewide Caulking is a family-owned and operated business established in 2010, specializing in caulking, insulation, and waterproofing services in Arizona. The company has grown from a one-man operation to a dynamic organization with skilled crews, and is recognized for its high-quality craftsmanship in commercial projects.

Verified


255 miles from Ontario, CA

Specializations (2)

Office Building

Religious

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Innovative Contractor Solutions logo

Innovative Contractor Solutions

5720 S 40th St, Phoenix, AZ 85040

Innovative Contractor Solutions (ICS) is a full-service specialty contracting company based in Arizona, specializing in commercial and residential insulation, firestopping, air barriers, and expansion joints since its formation in the Pacific Northwest in 1989.

Verified


255 miles from Ontario, CA

Specializations (4)

Healthcare

Office Building

Retail - General

Tenant Improvements

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Related Trades

Dampproofing

Built-Up Bituminous Waterproofing

Sheet Waterproofing

Fluid-Applied Waterproofing

Sheet Metal Waterproofing

Cementitious and Reactive Waterproofing

Bentonite Waterproofing

Traffic Coatings

Water Repellents

What the Early Adopters are Saying About Downtobid

"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"

Robyn LynnMRI Builders

"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."

Zalmy KavkaFounder, ZK Builders

""I love, the personalization of it. You get it more directed towards the contractors that we need. You, make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more, more specific, more detailed quotes, more the correct quotes that we're looking for from you guys as opposed to maybe other places.""

Ryan PastorEstimator at George H. Pastor and Sons General Contracting

What the Early Adopters are Saying About Downtobid

"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"

Robyn LynnMRI Builders

"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."

Zalmy KavkaFounder, ZK Builders

""I love, the personalization of it. You get it more directed towards the contractors that we need. You, make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more, more specific, more detailed quotes, more the correct quotes that we're looking for from you guys as opposed to maybe other places.""

Ryan PastorEstimator at George H. Pastor and Sons General Contracting

FAQs

What is Downtobid and how can it help find Waterproofing professionals in Ontario, CA?

Downtobid is a platform that helps you find Waterproofing contractors in Ontario, CA and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.


Requesting bids from Ontario, CA-based Waterproofing contractors

You can invite a contractor directly through our platform. Visit the contractor’s profile and click ‘Invite to Bid.’ Fill out the project details, including scope, timeline, and specific needs. Contractors in Ontario, CA will then respond with their bids. It’s often helpful to call contractors after submitting a request, especially if your project is urgent.


Contractor verification process on Downtobid

Downtobid sets itself apart by verifying each contractor through a multi-step process. We use AI to ensure that contractor information, including trades, is accurate. We cross-check details using databases, public records, and Google Maps to confirm that businesses are active and their contact information is up-to-date before listing them.


Essential information for Waterproofing project bid requests

When submitting a bid request, include clear details about your project, such as materials needed, deadlines, and any specific requirements. The more specific you are, the better the contractor can assess and quote the job accurately.


Tips for contacting local Waterproofing professionals

If your project is urgent, it’s a good idea to call the contractor directly after submitting a bid request. This helps ensure they understand the timeline and scope of work, especially if immediate service is needed.


Managing bids for large-scale Waterproofing projects

If you have a larger project and don’t want to contact each contractor individually, you can reach out to us directly. We offer an ITB (Invitation to Bid) platform where you can manage bids from multiple contractors at once.


Expected response times from Ontario, CA contractors

Most Waterproofing contractors will respond within 24-48 hours, depending on the complexity of your request. However, response times may vary – so be sure to follow up!

Quick stats about Waterproofing companies database in Ontario, CA

Total contractors

70 contractors

Total non union contractors

51 non union contractors

Total minority owned businesses

6 minority owned businesses

Total women owned businesses

1 women owned businesses

Average response time

2 days

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