Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Uniondale, NY

There are 28 highly-rated local basement waterproofing pros.

Need a pro for your basement waterproofing project in Uniondale, NY?

Select your specific project to find the pro for you.

TRUSTED BY UNIONDALE, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon31
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Uniondale

Avatar for Long Hill Masonry Corp

Long Hill Masonry Corp

80 Horseblock Road
4.92(
26
)
Approved Pro

Long Hill Masonry Corp

80 Horseblock Road
4.92(
26
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
24 local quotes requested

**We have now expanded our Foundation Services**Long Hill Masonry has been providing a tradition of expert craftsmanship, quality and service for over 30 years. The company is owned and operated by Joseph Tavella, who himself comes from generations of masons. It is our goal to achieve the highest standard of quality in every project. We guarantee our workmanship for one full year, and most projects are payable upon completion of job take a look at our website at www.longhillmasonry.com

"Joe Cam down to do an estimate and he was very knowledgeable. The Quote was Fair and I had hired them to do the job. They came on time and the job came out great. I would recommend Long Hill to everyone I know"

Christian G on August 2023

**We have now expanded our Foundation Services**Long Hill Masonry has been providing a tradition of expert craftsmanship, quality and service for over 30 years. The company is owned and operated by Joseph Tavella, who himself comes from generations of masons. It is our goal to achieve the highest standard of quality in every project. We guarantee our workmanship for one full year, and most projects are payable upon completion of job take a look at our website at www.longhillmasonry.com

"Joe Cam down to do an estimate and he was very knowledgeable. The Quote was Fair and I had hired them to do the job. They came on time and the job came out great. I would recommend Long Hill to everyone I know"

Christian G on August 2023


Avatar for Quality 1st Basement Systems

Quality 1st Basement Systems

359 RT-35
4.51(
289
)
Approved Pro

Quality 1st Basement Systems

359 RT-35
4.51(
289
)
Approved Pro
Customers say: Super punctual
295 local quotes requested
39 years of experience

Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.

"Everything went smoothly"

Hector R on December 2023

Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.

"Everything went smoothly"

Hector R on December 2023


John Whigham, Inc.

538 Westbury Avenue
4.64(
101
)
Approved Pro

John Whigham, Inc.

538 Westbury Avenue
4.64(
101
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
11 local quotes requested

John Whigham, Inc., is a proud native of Nassau County and the surrounding area. I have well over twenty years experience and am fully licensed and insured. I have a motto where the customer always comes first. I stand behind my belief that quality work and prompt service will only benefit my rapport with new and existing clients. I specialize in brick and stone patios, walkways and steps. I also can rip out and redo your cracked driveway for that smooth finish and that enhanced curb appeal you so desire. I can custom build your next patio or how about your deck? We all know old man winter is not far behind. I will offer snow removal service as well. Please ask to see my portfolio and also my extended reference list. Take advantage of my local ties and many years of experience. I look forward to hearing from you today.

"Beautiful job. Terrific communication. Highly recommend."

Donna G on May 2023

John Whigham, Inc., is a proud native of Nassau County and the surrounding area. I have well over twenty years experience and am fully licensed and insured. I have a motto where the customer always comes first. I stand behind my belief that quality work and prompt service will only benefit my rapport with new and existing clients. I specialize in brick and stone patios, walkways and steps. I also can rip out and redo your cracked driveway for that smooth finish and that enhanced curb appeal you so desire. I can custom build your next patio or how about your deck? We all know old man winter is not far behind. I will offer snow removal service as well. Please ask to see my portfolio and also my extended reference list. Take advantage of my local ties and many years of experience. I look forward to hearing from you today.

"Beautiful job. Terrific communication. Highly recommend."

Donna G on May 2023


Marinko Radakovic

123 MASON ST
5.00(
1
)
Approved Pro

Marinko Radakovic

123 MASON ST
5.00(
1
)
Approved Pro
13 local quotes requested
25 years of experience

With over 25 years of experience, Marinko Radakovic is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you!

"Chimney tuck pointing and minor repairs carried out, I am so impressed with how it turned out it looks like a new chimney now. 5 star. "

Mary W on October 2025

With over 25 years of experience, Marinko Radakovic is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you!

"Chimney tuck pointing and minor repairs carried out, I am so impressed with how it turned out it looks like a new chimney now. 5 star. "

Mary W on October 2025


Avatar for Zavza Seal, LLC

Zavza Seal, LLC

377 Main St. Suite 6
4.92(
43
)
Approved Pro

Zavza Seal, LLC

377 Main St. Suite 6
4.92(
43
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
44 local quotes requested

Zavza Seal is an experienced high end general contracting firm with a passion for delivering excellence. Serving Long Island communities including Suffolk, and Nassau counties. We are a one-stop shop construction company that specializes in the following: waterproofing basements, paving and sealing driveways and garages, waterproofing parking structure and concrete commercial roofs. Concrete Swimming pool buildout, Stone paving and tuck-pointing work. If you are considering any type of waterproofing project and concrete work we are here to help and can provide valuable, time-saving advice. We also specialize in waterproof concrete for professional and residential use called Basecrete. Call today for a free estimate!

"I hired Zavza Seal to waterproof my basement and they did an exceptional job! The team was professional, thorough and went the extra mile to ensure everything was done perfectly. I'm happy with their work and highly recommend them to anyone!"

Levan C on September 2024

Zavza Seal is an experienced high end general contracting firm with a passion for delivering excellence. Serving Long Island communities including Suffolk, and Nassau counties. We are a one-stop shop construction company that specializes in the following: waterproofing basements, paving and sealing driveways and garages, waterproofing parking structure and concrete commercial roofs. Concrete Swimming pool buildout, Stone paving and tuck-pointing work. If you are considering any type of waterproofing project and concrete work we are here to help and can provide valuable, time-saving advice. We also specialize in waterproof concrete for professional and residential use called Basecrete. Call today for a free estimate!

"I hired Zavza Seal to waterproof my basement and they did an exceptional job! The team was professional, thorough and went the extra mile to ensure everything was done perfectly. I'm happy with their work and highly recommend them to anyone!"

Levan C on September 2024


"Jose Giovanni is an amazing, honest, and trustworthy person. He explains every detail of the job and he answers all of your questions. He and his team are extremely reliable, and are very hardworking. They are super clean and leave the work area immaculate! After the job is completed, Jose Giovanni inspects every aspect of the job. He makes sure that the customer is 100% satisfied. He and his team do exceptional work! I am so happy that I hired him and his team!!"

GEORGE H on August 2025

Patzan Home Improvement is your go to team for all of your home needs. We work tirelessly to meet and exceed your expectations and constantly strive for perfection. Give us a call today and lets get started!

"Jose Giovanni is an amazing, honest, and trustworthy person. He explains every detail of the job and he answers all of your questions. He and his team are extremely reliable, and are very hardworking. They are super clean and leave the work area immaculate! After the job is completed, Jose Giovanni inspects every aspect of the job. He makes sure that the customer is 100% satisfied. He and his team do exceptional work! I am so happy that I hired him and his team!!"

GEORGE H on August 2025


Avatar for Diamond Masonry & Waterproofing

Diamond Masonry & Waterproofing

1378 Whittier Avenue
5.00(
5
)

Diamond Masonry & Waterproofing

1378 Whittier Avenue
5.00(
5
)
82 local quotes requested

Diamond Masonry & Waterproofing was founded on a passion for the trade. We have been in the masonry and basement waterproofing trade since 1988 and formed diamond masonry & waterproofing in 2000.our knowledge and expertise of the industry has led us to small jobs and large scale commercial projects. No job is the same so we enjoy the challenges of all projects.

Diamond Masonry & Waterproofing was founded on a passion for the trade. We have been in the masonry and basement waterproofing trade since 1988 and formed diamond masonry & waterproofing in 2000.our knowledge and expertise of the industry has led us to small jobs and large scale commercial projects. No job is the same so we enjoy the challenges of all projects.


Specializing in masonry including: concrete, cement, driveways, patios, stairs, egress windows, entrance to basements, chimneys, stucco, etc.


We specialize in general home improvements from paint to other ends like accent walls and built-in’s. for almost a decade K&J Home Improvement has been the go to for home owners.


Avatar for Kingdom Masonry & Home Improvement's

Kingdom Masonry & Home Improvement's

16 Parker Avenue
No reviews yet

Kingdom Masonry & Home Improvement's

16 Parker Avenue
No reviews yet
Free onsite estimate

Hi Everyone Kingdom Masonry & Home Improvements We Offer All Types Of Home Improvements Always Happy To Help With Any Project No Matter How Small/Big Offer High Quality Service Same Day Call Out Service Free Quotes On All Projects Have A Good One Everyone Give Us A Call Anytime

Hi Everyone Kingdom Masonry & Home Improvements We Offer All Types Of Home Improvements Always Happy To Help With Any Project No Matter How Small/Big Offer High Quality Service Same Day Call Out Service Free Quotes On All Projects Have A Good One Everyone Give Us A Call Anytime

...
Showing 1-10 of 206
Basement Waterproofing questions, answered by experts

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. 

No, everything doesn’t get wet if the bathroom is well-designed and the fixtures are properly installed. It’s important that the floor of a wet room drains correctly, and proper waterproofing and slip-resistant flooring are used to avoid creating slipping hazards. Since the shower isn’t housed in an enclosed space, you’ll need to make sure the towel rack and toilet paper holder are placed in areas where they won’t get wet.

Most houses will have vents in the crawl space. This allows for air passage and energy retention, which in many ways can help control the temperature inside the home. If you are able to consider the cost of a crawl space encapsulation, you may not need your crawl space vents at all. 

Some disadvantages of crawl spaces are mostly regarding the air itself—moisture build-up and poor ventilation, which can cause problems both in the house and underneath it, even damaging the foundation itself. Crawl spaces are difficult to access and often invite unwanted pests during the hot summer months and the cold winter ones. These hard-to-seal spaces are also susceptible to water damage during periods of heavy rain or melting snow.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

The Uniondale, NY homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.