Find and Invite the Best Commercial Waterproofing Contractors in Islip, NY

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75 Verified Waterproofing companies in Islip, NY

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

Gombert Organization logo

Gombert Organization

117 Brook Ave. Deer Park, NY 11729

Since 1928, Gombert Organization has been a leader in the chemical resin injection grouting industry in New York, specializing in waterproofing and structural support for various buildings without the need for excavation or exterior demolition. The company is based on Long Island and serves the tri-state area, offering services such as hydrophilic injection and epoxy grouting, with a focus on safety and quality.

Verified


1 mile from Islip, NY

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Wolkow Braker Roofing logo

Wolkow Braker Roofing

151 Herricks Rd. Ste. 204 Garden City Park, NY 11040

Wolkow Braker Roofing Corp. is a premier roofing, sheet metal, and waterproofing organization in the tri-state area, providing high-quality services to New York's construction industry since its founding in 1944.

Verified


11 miles from Islip, NY

Specializations (3)

Financial

Office Building

Venue

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Circle Rose Contracting logo

Circle Rose Contracting

201 Northwest Dr, Farmingdale, NY 11735

Circle Rose Contracting, Inc. is a full-service roofing and waterproofing contractor based in New York, NY, offering a range of services including new construction, re-roofing, and various roofing systems installations, with a management team that boasts four generations of construction experience.

Verified


11 miles from Islip, NY

Specializations (1)

Office Building

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Primecity Contracting logo

Primecity Contracting

2056 Cropsey Ave. Brooklyn, NY 11214

Primecity Contracting is a Brooklyn-based construction company with 17 years of experience, offering a full range of building services from groundworks to roofing, including waterproofing, masonry, and various home improvements for both domestic and commercial customers.

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34 miles from Islip, NY
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Water Tight logo

Water Tight

Avenel, NJ 07001

Water Tight is a New Jersey-based company specializing in basement waterproofing, finishing, mold remediation, deodorizing, and installation of sump pumps and egress windows, offering 24/7 emergency services and free estimates.

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53 miles from Islip, NY
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CGI Northeast logo

CGI Northeast

4928 31st Pl. Long Island City, NY 11101

CGI Northeast Inc. specializes in below-grade injection waterproofing systems in the New York metropolitan area, serving both private and public sectors since 2004. The company is known for its innovative injection method that eliminates water infiltration in various infrastructures without the need for exterior excavation.

Verified


26 miles from Islip, NY
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EDA Contractors logo

EDA Contractors

633 Dunksferry Rd, Andalusia, PA 19020

EDA Contractors, Inc. specializes in the exterior envelope of commercial, institutional, and industrial buildings, offering services such as roofing, waterproofing, and masonry repair with a commitment to providing the best workmanship and customer service in the industry.

Verified


90 miles from Islip, NY

Specializations (14)

Airport

Casino

Education

Fitness

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DUOMIT logo

DUOMIT

2600 E 24th St, Brooklyn, NY 11235

DUOMIT is a trusted flooring contractor based in New York, specializing in a variety of services including concrete polishing, epoxy flooring, decorative concrete, and innovative façade systems for retail, commercial, industrial, and institutional applications.

Verified


34 miles from Islip, NY

Specializations (15)

Airport

Correctional

Education

Federal Government

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Pioneer Contracting logo

Pioneer Contracting

412 Davisville Rd, Willow Grove, PA 19090

Pioneer Contracting, Inc. is a company specializing in caulking, waterproofing, expansion joints, and air & vapor barrier systems, focusing on preserving the structural integrity of buildings with precise and reliable installations for demanding commercial construction projects in Southeastern Pennsylvania, New Jersey, and Delaware.

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97 miles from Islip, NY
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Galicia Contracting & Restoration logo

Galicia Contracting & Restoration

194 Avenue L Newark, NJ 07105

Galicia Contracting & Restoration Corp. is a construction services company with over 20 years of experience, specializing in masonry, brickwork, waterproofing, and roofing for commercial and residential properties in New York, New Jersey, and Connecticut.

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48 miles from Islip, NY
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Salvo Waterproofing and Masonry logo

Salvo Waterproofing and Masonry

1741 Valley Forge Rd. P.O. Box 39 Worcester, PA 19490-9000

At Salvo Waterproofing and Masonry, we believe in the value of being a trusted partner in your home repair projects. We understand that a wet basement can be scary to fix on your own, but we aim to cut through the scare tactics to work towards reasonably priced and long lasting results. Our goal is to get you the results you want at the price you can afford. There is no high pressure sales or scare tactics, as our experience has taught us that being honest is the only way to go. We carry this integrity through the entire process so much that word of mouth is consistently our biggest drive of new business. We are here for you when you need us and firmly believe in the power of great work and outstanding results. We look forward to working with you to protect your home from some of life's toughest storms.

Verified


97 miles from Islip, NY
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TG Basile logo

TG Basile

Roselle, NJ 07203

TG Basile has been specializing in construction, restoration, and waterproofing services since 1972, offering expertise in structural concrete, masonry, and building envelope restoration across New Jersey, New York, Pennsylvania, and Connecticut. The company is known for its cost-effective solutions in building restoration, parking garage restoration, and concrete and masonry repair, serving commercial, residential, industrial, and various other sectors.

Verified


50 miles from Islip, NY

Specializations (17)

Airport

Casino

Education

Financial

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ABC Roofing & Waterproofing logo

ABC Roofing & Waterproofing

58-04 58th Pl. Maspeth, NY 11378

ABC Roofing & Waterproofing is a professional contractor based in New York City, specializing in roofing and waterproofing services such as roof inspection, installation, replacement, and various waterproofing solutions for balconies, basements, decks, and more, ensuring long-term durability and protection against water damage.

Verified


26 miles from Islip, NY
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Crown Waterproofing logo

Crown Waterproofing

1 W. Sandford Blvd. Mt. Vernon, NY 10550

Crown Waterproofing Inc. specializes in foundation waterproofing and injection grouting to protect structures from water damage, offering services such as caulking and sealing for windows, doors, and expansion joints.

Verified


30 miles from Islip, NY
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CS Stucco & Plaster logo

CS Stucco & Plaster

105 Industrial E, Clifton, NJ 07012

CS Stucco & Plaster is a construction company specializing in residential and commercial stucco and plastering services, including EIFS installation, masonry, and water-proofing. The company, founded in 1987, is based in Clifton, New Jersey.

Verified


48 miles from Islip, NY

Specializations (1)

Office Building

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Related Trades

Dampproofing

Built-Up Bituminous Waterproofing

Sheet Waterproofing

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Sheet Metal Waterproofing

Cementitious and Reactive Waterproofing

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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 Islip, NY?

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


Requesting bids from Islip, NY-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 Islip, NY 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 Islip, NY 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 Islip, NY

Total contractors

118 contractors

Total union contractors

9 union contractors

Total non union contractors

81 non union contractors

Total minority owned businesses

11 minority owned businesses

Total women owned businesses

6 women owned businesses

Average response time

4 days

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