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There are 26 highly-rated local basement waterproofing pros.

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TRUSTED BY VALLEY STREAM, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon48
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Valley Stream

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 K 2 Construction

K 2 Construction

12430 Rockwell Blvd
5.00(
2
)
Approved Pro

K 2 Construction

12430 Rockwell Blvd
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
9 years of experience

We're dedicated to providing our clients with the very best in concrete installation and repair for driveways, sidewalks, patios, steps, and a variety of other projects. With over 15 years of industry experience, we take and enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"RAJ arrived on time and did the job to my liking."

Bert E on June 2021

We're dedicated to providing our clients with the very best in concrete installation and repair for driveways, sidewalks, patios, steps, and a variety of other projects. With over 15 years of industry experience, we take and enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"RAJ arrived on time and did the job to my liking."

Bert E on June 2021


Marinko Radakovic

123 MASON ST
5.00(
1
)
Approved Pro

Marinko Radakovic

123 MASON ST
5.00(
1
)
Approved Pro
19 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
49 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


Avatar for Drill Construction Co

Drill Construction Co

805 Rogers Ave 1B
4.89(
14
)
Approved Pro

Drill Construction Co

805 Rogers Ave 1B
4.89(
14
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
34 local quotes requested

Drill Construction Co is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. 20+ years experience

"Drill Construction repaired my roof and backyard, concerns. They are very professional with time, and with their work. I appreciated that Zamir took time to explain in precise detail not only the potential cause of the problem(s) but also how he was prepared to repair the concerns. His explanation was then documented in the contract so that I knew what to expect, and could refer back to the contract if necessary. I was also grateful for the way they respected and protected my home. They removed all waste material and cleaned up each day before departing. "

Oliva G on August 2025

Drill Construction Co is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. 20+ years experience

"Drill Construction repaired my roof and backyard, concerns. They are very professional with time, and with their work. I appreciated that Zamir took time to explain in precise detail not only the potential cause of the problem(s) but also how he was prepared to repair the concerns. His explanation was then documented in the contract so that I knew what to expect, and could refer back to the contract if necessary. I was also grateful for the way they respected and protected my home. They removed all waste material and cleaned up each day before departing. "

Oliva G on August 2025


"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 Manhattan Contracting & Restoration

Manhattan Contracting & Restoration

91 Walker St
No reviews yet

Manhattan Contracting & Restoration

91 Walker St
No reviews yet
11 years of experience

We are the leading Professional Waterproofing company. Located locally and we have served the community for the last 12 years. Dedicated and expert in waterproofing available 24/7. Our services include but are not limited to: Membrane Waterproofing, Cementitious Waterproofing, Bentonite Waterproofing, Exterior Waterproofing, Interior Waterproofing, Basement Waterproofing, Foundation Waterproofing, Brick Wall Waterproofing, Roof Leak Repair or Replace, Emergency Water Leaking Fix and Repair, Brick Pointing, Sidewalk Replacement, Flat Roof Water Leaking Repair or Replacement, DOB violations removal , parapet walls leaking fix and replacement ,sander Block wall waterproofing , lentils Replacement , large scale bricks grinding pointing , scaffolding, side walk bridge , emergency Strom water treatment ,Drain out ,repair and fix , 1000+ happy customers are our core value , we are fully licensed and insured , Customer satisfaction is our goal and we provide full guarantee for our work .

We are the leading Professional Waterproofing company. Located locally and we have served the community for the last 12 years. Dedicated and expert in waterproofing available 24/7. Our services include but are not limited to: Membrane Waterproofing, Cementitious Waterproofing, Bentonite Waterproofing, Exterior Waterproofing, Interior Waterproofing, Basement Waterproofing, Foundation Waterproofing, Brick Wall Waterproofing, Roof Leak Repair or Replace, Emergency Water Leaking Fix and Repair, Brick Pointing, Sidewalk Replacement, Flat Roof Water Leaking Repair or Replacement, DOB violations removal , parapet walls leaking fix and replacement ,sander Block wall waterproofing , lentils Replacement , large scale bricks grinding pointing , scaffolding, side walk bridge , emergency Strom water treatment ,Drain out ,repair and fix , 1000+ happy customers are our core value , we are fully licensed and insured , Customer satisfaction is our goal and we provide full guarantee for our work .


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


Avatar for Allsolutions Masonry & Construction

Allsolutions Masonry & Construction

61-43 186st St
No reviews yet

Allsolutions Masonry & Construction

61-43 186st St
No reviews yet
Free onsite estimate

As a Professional and skilled Company, we provide outstanding home improvement services to residents of New York. Owing and operating our own trucks, tools and equipments makes it easy for us to work efficiently with competitive price.

As a Professional and skilled Company, we provide outstanding home improvement services to residents of New York. Owing and operating our own trucks, tools and equipments makes it easy for us to work efficiently with competitive price.


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

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Basement Waterproofing questions, answered by experts

Methods include interior sealants, exterior excavation and waterproofing membranes, sump pump installation, and vapor barriers for encapsulation. Techniques vary based on the structure and severity of moisture issues.

Ideal humidity conditions generally range from 30% to 50%, with 45% considered optimal humidity for most homes. If your humidity levels drop below that range, you can turn your dehumidifier off. Additionally, suppose the temperature where the dehumidifier is installed falls below 60 degrees Fahrenheit. In that case, it's best to turn it off and unplug it since cooler temperatures can cause the unit's coils to freeze.

The best ventilation for a crawl space is a fully encapsulated crawl space with its own separate ventilation system. If you go this route, ensure you have the proper crawl space code requirements done and dusted before encapsulating your crawl space with a moisture barrier and installing appliances that may not be up to the proper specs.

Plan on cleaning your crawl space at least once a year, though twice a year is ideal. During the cleaning, remove any debris or dust and check for potential issues like pest infestations or water damage. The sooner you catch these issues, the easier (and cheaper) it will be to fix them.

Yes, you can over dehumidify your house. While you may prefer a dryer climate inside, the elimination of too much moisture in the air can lead to an extremely dry environment that can affect those with respiratory and skin issues. Strike a balance between eliminating excess moisture without making your home feel like a desert. Most modern thermostats show the humidity levels for guidance.

The Valley Stream, NY homeowners’ guide to basement waterproofing services

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