Top-rated basement waterproofing pros.

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There are 11 highly-rated local basement waterproofing pros.

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    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Commack

Avatar for Zavza Seal, LLC

Zavza Seal, LLC

4.92(
43
)
Approved Pro

Zavza Seal, LLC

4.92(
43
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
55 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 New York Waterproofing

New York Waterproofing

4.97(
17
)
Approved Pro

New York Waterproofing

4.97(
17
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

Struggling with basement water infiltration? New York Waterproofing offers unparalleled expertise in stopping water and hydrostatic pressure, endorsed by merchant engineers globally. Our basement waterproofing service guarantees the best solution nationwide. If competitors offer a better price, it's free! Our innovative process ensures water-tight basements without pumps or drains, even in severe conditions. Within hours, we eliminate water, mold, and odors permanently. Utilizing proprietary technology, our method seals water and moisture effectively and permanently. Plus, our guarantees are permanent and transferable, ensuring lasting peace of mind for homeowners. Projects start at $1299, a fraction of conventional costs, completed in a day! Call (631) 806-9690 for a free estimate. Opt for our efficient, and most affordable solution!

"Wonderful respectable people who work very hard to get the job done."

Joan W on September 2024

Struggling with basement water infiltration? New York Waterproofing offers unparalleled expertise in stopping water and hydrostatic pressure, endorsed by merchant engineers globally. Our basement waterproofing service guarantees the best solution nationwide. If competitors offer a better price, it's free! Our innovative process ensures water-tight basements without pumps or drains, even in severe conditions. Within hours, we eliminate water, mold, and odors permanently. Utilizing proprietary technology, our method seals water and moisture effectively and permanently. Plus, our guarantees are permanent and transferable, ensuring lasting peace of mind for homeowners. Projects start at $1299, a fraction of conventional costs, completed in a day! Call (631) 806-9690 for a free estimate. Opt for our efficient, and most affordable solution!

"Wonderful respectable people who work very hard to get the job done."

Joan W on September 2024


Basement Man

5.00(
15
)
Approved Pro

Basement Man

5.00(
15
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 local quotes requested

WHY--THIS IS A JOB FOR BASEMENT MAN!!! Your locally owned and operated Basement Waterproofing Specialist. Why am I YOUR Basement Waterproofing Specialist? Because over a 38 year period, I've built over 110 customer homes all over Long Island and I know Basements! We stand behind and guarantee all of our work, so give us a call anytime for a free estimate.

"Things went great I'd hire him again"

John R on May 2025

WHY--THIS IS A JOB FOR BASEMENT MAN!!! Your locally owned and operated Basement Waterproofing Specialist. Why am I YOUR Basement Waterproofing Specialist? Because over a 38 year period, I've built over 110 customer homes all over Long Island and I know Basements! We stand behind and guarantee all of our work, so give us a call anytime for a free estimate.

"Things went great I'd hire him again"

John R on May 2025


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


Avatar for K&J Home improvement

K&J Home improvement

No reviews yet

K&J Home improvement

No reviews yet
7 years of experience

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.

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.


Dar Cleaning

No reviews yet

Dar Cleaning

No reviews yet
6 years of experience

Business Overview Welcome to Dar Cleaning, where spotless service meets unparalleled expertise. Specialties and Overview of Services: At Dar Cleaning, we specialize in delivering top tier cleaning services tailored to meet the unique needs of our clients. Our comprehensive range of services includes residential cleaning, commercial cleaning, deep cleaning, carpet cleaning, window washing, and more. Whether you need a one-time deep clean or regular maintenance, we are dedicated to providing a pristine environment that enhances the comfort and productivity of your space. Thank you for considering Dar Cleaning. We look forward to the opportunity to provide you with exceptional cleaning services that exceed your expectations. Contact us today to learn more about how we can help you maintain a clean, healthy, and welcoming space.

Business Overview Welcome to Dar Cleaning, where spotless service meets unparalleled expertise. Specialties and Overview of Services: At Dar Cleaning, we specialize in delivering top tier cleaning services tailored to meet the unique needs of our clients. Our comprehensive range of services includes residential cleaning, commercial cleaning, deep cleaning, carpet cleaning, window washing, and more. Whether you need a one-time deep clean or regular maintenance, we are dedicated to providing a pristine environment that enhances the comfort and productivity of your space. Thank you for considering Dar Cleaning. We look forward to the opportunity to provide you with exceptional cleaning services that exceed your expectations. Contact us today to learn more about how we can help you maintain a clean, healthy, and welcoming space.


"Eddie and his crew solved my flooding issues with the installation of new pumps and delivered innovation solutions for a complicated problem, in the best efficient ways. His work was clean efficient, immaculate honest and on time. his company was accountable and delivered exactly what I requested and needed. Fortunately for me he will be returning soon to continue to address a few other projects on my list. I'm confident anyone that hires this company will be extremely pleased. A number of my personal friends have hired his team and were pleased with no regrets. Terry"

Theresa L on June 2024

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"Eddie and his crew solved my flooding issues with the installation of new pumps and delivered innovation solutions for a complicated problem, in the best efficient ways. His work was clean efficient, immaculate honest and on time. his company was accountable and delivered exactly what I requested and needed. Fortunately for me he will be returning soon to continue to address a few other projects on my list. I'm confident anyone that hires this company will be extremely pleased. A number of my personal friends have hired his team and were pleased with no regrets. Terry"

Theresa L on June 2024



All Boro Inc

No reviews yet

All Boro Inc

No reviews yet
26 years of experience

We are a restoration, remediation, construction and maintenance company that works with commercial, residential customers and non-profit organizations by providing services that fix, build and maintain their quality of life. Servicing the Five Boroughs of New York and Long Island.

We are a restoration, remediation, construction and maintenance company that works with commercial, residential customers and non-profit organizations by providing services that fix, build and maintain their quality of life. Servicing the Five Boroughs of New York and Long Island.

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Basement Waterproofing questions, answered by experts

Sandbags are the most common and efficient way to create a flood barrier at home. Some local authorities pass them around to homes before the risk of a flood. Otherwise, you can use flood-proof house materials, like burlap or woven plastic bags, to make sandbags and fill them with sand or cat litter. Make sure that when you stack them, they’re tightly laid on top of each other, creating the effect of a firm wall against accumulating water.

Encapsulation can take the place of crawl space vents since it protects the area from moisture and air all year round. Determining whether you should open or close crawl space vents can be complicated since it often depends on the weather and humidity. Skip this step by investing in crawl space encapsulation whenever possible.

The first step to preventing foundation cracks is to repair any current ones. When one crack forms, it becomes more likely that a second crack will follow. A few other tips include performing regular foundation checks, cleaning spouts and gutters, and installing exterior drains if needed. For those living in a hot and arid area, you should water your foundation every other day.

The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in. 

If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.

You can seal a concrete slab by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.

The Commack, NY homeowners’ guide to basement waterproofing services

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