Top-rated basement waterproofing pros.

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There are 11 highly-rated local basement waterproofing pros.

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  • Verified reviews icon47
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in West Islip

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
52 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


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
19 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.


"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.


PROBROS

5.00(
1
)

PROBROS

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

PROBROS Custom Aesthetics, for all your home remodeling needs. We do it all from building complete custom homes, interior remodeling that includes but is not limited to; Kitchen remodels, Bathroom remodels, Flooring, Roofing, Deck installation, and much more. Here at PROBROS we value each of our jobs as a unique and creative way for our homeowners to express themselves, all for an affordable price while maintaining a high quality finished product. With a dedicated team with over 20 years of experience, we have been around a long time and like to stay ahead of the competition, giving the best prices available and giving a reliable trusted service. There is no home renovation service that is too big or too small for us.

"The team did a great job on our deck in our backyard"

Fred C on March 2023

PROBROS Custom Aesthetics, for all your home remodeling needs. We do it all from building complete custom homes, interior remodeling that includes but is not limited to; Kitchen remodels, Bathroom remodels, Flooring, Roofing, Deck installation, and much more. Here at PROBROS we value each of our jobs as a unique and creative way for our homeowners to express themselves, all for an affordable price while maintaining a high quality finished product. With a dedicated team with over 20 years of experience, we have been around a long time and like to stay ahead of the competition, giving the best prices available and giving a reliable trusted service. There is no home renovation service that is too big or too small for us.

"The team did a great job on our deck in our backyard"

Fred C on March 2023


Kalnik Construction

No reviews yet

Kalnik Construction

No reviews yet
18 years of experience

We are fully insured, licensed and bonded. We prepare and coordinate to meet our clients on their everyday needs using a foundation of proper instruction, coordination, and planning. Attention to detail is an imperative aspect of our commitment to you. Kalnik Corp. sees projects through. We walk our customers through the initial design phase all the way to completion of the project. Armed with project managers and a full array of tradesmen, we are capable of handling nearly any project. From liability insurance that covers 15 story building construction, restaurant build-outs, retail renovations, M1 hotels to medical offices, we have extensive experience in all sorts of building and construction projects. No job is too big or too small and we can assure you that you will not be disappointed with our work. History Company Incorporated in 2007, Personnel Experience since in 1989. Having started over 30 years ago doing quality construction work, we are now an all-inclusive General Contractor capable of handling almost any project from its initial design phase all through its completion. Armed with an array of experienced Project Managers and full battery of Tradesmen, no job is too small or too large.

We are fully insured, licensed and bonded. We prepare and coordinate to meet our clients on their everyday needs using a foundation of proper instruction, coordination, and planning. Attention to detail is an imperative aspect of our commitment to you. Kalnik Corp. sees projects through. We walk our customers through the initial design phase all the way to completion of the project. Armed with project managers and a full array of tradesmen, we are capable of handling nearly any project. From liability insurance that covers 15 story building construction, restaurant build-outs, retail renovations, M1 hotels to medical offices, we have extensive experience in all sorts of building and construction projects. No job is too big or too small and we can assure you that you will not be disappointed with our work. History Company Incorporated in 2007, Personnel Experience since in 1989. Having started over 30 years ago doing quality construction work, we are now an all-inclusive General Contractor capable of handling almost any project from its initial design phase all through its completion. Armed with an array of experienced Project Managers and full battery of Tradesmen, no job is too small or too large.

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Basement Waterproofing questions, answered by experts

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.

Periodic inspections and addressing drainage issues prevent further damage.

Crawl spaces are the more desirable option overall because they provide additional space for storage and utilities, but they are more expensive to install and maintain. Slab foundations are considered a better option in warmer climates where the depth of the frost line isn’t an issue because they’re more affordable, but crawl spaces are better in areas where the frost line is deep or where flooding can be an issue.

Brick is designed to absorb moisture, but it is also designed to let it evaporate as well. So in general, the goal shouldn’t necessarily be keeping moisture out but making sure it has the room to breathe. If you have excess moisture getting through your brick wall, it’s more likely that you have a crack or other issue at play that a typical sealant won’t fix. So, instead of investing in sealant, try repairing your brick wall instead.

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 West Islip, NY homeowners’ guide to basement waterproofing services

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