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  • Verified reviews icon36
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Mastic

Basement Man

4.95(
52
)
Approved Pro

Basement Man

4.95(
52
)
Approved Pro
Super Service Award
Customers say: Terrific value
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
42 years of experience

Basement Man is your locally owned and operated basement waterproofing specialist. We stand behind and guarantee all of our work, so give us a call anytime for a free estimate.

"Jack Brady and his crew at Basement Man are wonderful. Jack is honest, considerate, and very much an old-school professional. You tell him and his crew what you want done and they'll tell you what's possible, what it will cost (which is always reasonable and never with an up-charge), and how long it will take. Jack's crew were on-time, worked efficiently, and were never in the way. My crawlspace was encapsulated on time and on budget. I highly recommend Basement Man (Jack) and his team for any basement or crawlspace needs."

Brian H on December 2025

Basement Man is your locally owned and operated basement waterproofing specialist. We stand behind and guarantee all of our work, so give us a call anytime for a free estimate.

"Jack Brady and his crew at Basement Man are wonderful. Jack is honest, considerate, and very much an old-school professional. You tell him and his crew what you want done and they'll tell you what's possible, what it will cost (which is always reasonable and never with an up-charge), and how long it will take. Jack's crew were on-time, worked efficiently, and were never in the way. My crawlspace was encapsulated on time and on budget. I highly recommend Basement Man (Jack) and his team for any basement or crawlspace needs."

Brian H on December 2025


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
5 years of experience

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
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
42 years of experience

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


Avatar for Lorenzo Napolitano Construction Inc.

Lorenzo Napolitano Construction Inc.

4.94(
16
)
Approved Pro

Lorenzo Napolitano Construction Inc.

4.94(
16
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
32 years of experience

We're dedicated to providing our clients with the very best in concrete installation for driveways, sidewalks, patios, steps, and a variety of other projects. We also specialize in all Stone Work including fireplace installations, pavers, & stucco siding. With over 25 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.

"Great knowledgable guys. Very happy with their work"

Vincent R on September 2025

We're dedicated to providing our clients with the very best in concrete installation for driveways, sidewalks, patios, steps, and a variety of other projects. We also specialize in all Stone Work including fireplace installations, pavers, & stucco siding. With over 25 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.

"Great knowledgable guys. Very happy with their work"

Vincent R on September 2025


Napolitano Brothers Contracting, Inc.

4.93(
23
)
Approved Pro

Napolitano Brothers Contracting, Inc.

4.93(
23
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
36 years of experience

Family Owned and Operated Since 1984 Napolitano Brothers Contracting, Inc. has been providing exceptional Masonry, Landscape Design, and Waterproofing solutions to customers all over Long Island.

"James and Mike also did the foundation and patio work as well as walls and steps. They are simply the most professional yet friendly people to to do business with. Their attention to detail and quality of execution is simply amazing. Highly recommended!!!"

Andy S on October 2024

Family Owned and Operated Since 1984 Napolitano Brothers Contracting, Inc. has been providing exceptional Masonry, Landscape Design, and Waterproofing solutions to customers all over Long Island.

"James and Mike also did the foundation and patio work as well as walls and steps. They are simply the most professional yet friendly people to to do business with. Their attention to detail and quality of execution is simply amazing. Highly recommended!!!"

Andy S on October 2024


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
26 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


Avatar for Home Healthy Homes, Inc.

Home Healthy Homes, Inc.

4.60(
95
)
Approved Pro

Home Healthy Homes, Inc.

4.60(
95
)
Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
20 years of experience

Home Healthy Homes is your source for quality basement waterproofing, mold removal, and indoor air quality services. With more than forty years of combined experience helping families heal homes and feel better, Home Healthy Homes knows about the dangers of what you cannot see. Give us a call and a Home Healthy Homes licensed waterproofing, mold, and indoor air quality consultant, will come to your home to provide you with a Free Inspection and on-the-spot Estimate. In an effort to heal your home as quickly as possible, in most cases we are able to complete the job the very same day! We are licensed, mold certified, and members in good standing with the National Association of Waterproofing and Structural Repairs Contractors and the Environmental Solutions Association. Our commitment to healing homes and protecting children and families from the health risks of poor indoor air quality is demonstrated by the care we take and in the quality of the work we do.

"Tey did a good job from what I can see. Of course the proof will be in the next big rainfall"

ellen c on August 2024

Home Healthy Homes is your source for quality basement waterproofing, mold removal, and indoor air quality services. With more than forty years of combined experience helping families heal homes and feel better, Home Healthy Homes knows about the dangers of what you cannot see. Give us a call and a Home Healthy Homes licensed waterproofing, mold, and indoor air quality consultant, will come to your home to provide you with a Free Inspection and on-the-spot Estimate. In an effort to heal your home as quickly as possible, in most cases we are able to complete the job the very same day! We are licensed, mold certified, and members in good standing with the National Association of Waterproofing and Structural Repairs Contractors and the Environmental Solutions Association. Our commitment to healing homes and protecting children and families from the health risks of poor indoor air quality is demonstrated by the care we take and in the quality of the work we do.

"Tey did a good job from what I can see. Of course the proof will be in the next big rainfall"

ellen c on August 2024


Avatar for ProSeal Waterproofing

ProSeal Waterproofing

5.00(
8
)
Approved Pro

ProSeal Waterproofing

5.00(
8
)
Approved Pro
2 years of experience
Free onsite estimate

I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"Alex was amazing!! We had a crack in our foundation that another company attempted to repair numerous times. We were fortunate enough to hear about ProSeal and I am happy to report not only did Alex repair the crack to near perfection but the work was done timely, neatly and his customer service skills are top notch. I would HIGHLY recommend ProSeal for all of your foundation needs."

Angela M on October 2025

I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"Alex was amazing!! We had a crack in our foundation that another company attempted to repair numerous times. We were fortunate enough to hear about ProSeal and I am happy to report not only did Alex repair the crack to near perfection but the work was done timely, neatly and his customer service skills are top notch. I would HIGHLY recommend ProSeal for all of your foundation needs."

Angela M on October 2025


Avatar for New Horizon Homes, Inc.

New Horizon Homes, Inc.

4.83(
12
)
Approved Pro

New Horizon Homes, Inc.

4.83(
12
)
Approved Pro
Customers say: Quality work
24 years of experience
Free onsite estimate

New Horizon Homes, Inc. is locally owned and operated. We pride ourselves on providing quality work and great customer service. Our customer's complete satisfaction is our top priority! Please call today for your free estimates.

"I dealt with the owner Paul from start to finish. We had purchased all of the materials for the renovation of our bathroom as well as our master bedroom, halls and entire first floor ceiling. Paul and his crew made our entire plan come alive and completed the project in the time span they had promised. We are thrilled with how well every thing went. We had them do an additional project on the exterior of our house after completion of the interior work and this was handled as well. the few minor problems that occurred were rectified with no delay, and to our complete satisfaction."

tom s on December 2017

New Horizon Homes, Inc. is locally owned and operated. We pride ourselves on providing quality work and great customer service. Our customer's complete satisfaction is our top priority! Please call today for your free estimates.

"I dealt with the owner Paul from start to finish. We had purchased all of the materials for the renovation of our bathroom as well as our master bedroom, halls and entire first floor ceiling. Paul and his crew made our entire plan come alive and completed the project in the time span they had promised. We are thrilled with how well every thing went. We had them do an additional project on the exterior of our house after completion of the interior work and this was handled as well. the few minor problems that occurred were rectified with no delay, and to our complete satisfaction."

tom s on December 2017


Avatar for Foundation Crack Repair, LLC

Foundation Crack Repair, LLC

4.15(
10
)
Approved Pro

Foundation Crack Repair, LLC

4.15(
10
)
Approved Pro
Customers say: Quick response
7 years of experience
Free onsite estimate

The team at Foundation Crack Repair can diagnose any problems with the concrete, or brick surfaces in and around your Long Island home. We are also here to make sure that you are practicing regular maintenance procedures to ensure that you are keeping things from further repair or replacement. Our team is skilled in ascertaining problems related to concrete foundations and can discuss all of your repair options with you as well as reliable home remodeling services to take the next step with finishing touches. We also make every customer experience flexible and customized so that we can work with you on whatever you need from schedule to budget. Our services go above and beyond any other Long Island because we work with you on every step and every crack that you need to be addressed.

"I had a crack in my foundation that needed to get repaired quickly. They did a fantastic job and were a pleasure to deal with. I recommend them for anyone that’s in the same position that I was! "

Kevin G on December 2025

The team at Foundation Crack Repair can diagnose any problems with the concrete, or brick surfaces in and around your Long Island home. We are also here to make sure that you are practicing regular maintenance procedures to ensure that you are keeping things from further repair or replacement. Our team is skilled in ascertaining problems related to concrete foundations and can discuss all of your repair options with you as well as reliable home remodeling services to take the next step with finishing touches. We also make every customer experience flexible and customized so that we can work with you on whatever you need from schedule to budget. Our services go above and beyond any other Long Island because we work with you on every step and every crack that you need to be addressed.

"I had a crack in my foundation that needed to get repaired quickly. They did a fantastic job and were a pleasure to deal with. I recommend them for anyone that’s in the same position that I was! "

Kevin G on December 2025

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Basement Waterproofing questions, answered by experts

If there is standing liquid on your concrete, remove it before attempting any of the above cleaning methods. For small amounts of water, use rags, a bucket, and a mop. For larger areas of liquid, lay down cat litter or baking soda to soak up the water first. If you have extremely large pools of water sitting on your concrete, break out the wet vac and get to work.

It’s not the number of weep holes that should be of concern to builders but rather their spacing. Weep holes are usually spaced anywhere between 16 inches on center when using round tubes or wicking materials and 24 inches on center when using open-head joints. This is a more conservative spacing than the 33-inch maximum spacing on center that’s mentioned in the International Residential Code. All in all, the total number of weep holes a brick exterior should have will depend on the size of the structure.

Finding water under your sink can throw a wrench in your day, but acting quickly can prevent water damage. Soak up water with a towel, then put a fan or dehumidifier near the open cabinet to dry it as fast as possible. If any mold or mildew has formed, you may need to replace the bottom of the cabinet.

Standing water under your house can threaten its structural integrity. If water pools in your crawl space, it can damage the foundation and the structure above ground, causing wood rot, mold, and other problems. If you have a concrete foundation, standing water under your house can also make your foundation slabs crack.

You should take care of any sign of water in your basement, whether it’s dampness after heavy rain or puddles of water on the floor. Besides potentially causing a health hazard, the moisture can damage your home’s structure and foundation. Furthermore, mold can grow quickly and spread throughout the rest of your home. With mold remediation costs ranging between $1,200 and $3,400, it’s best to avoid mold issues by fixing the leak.

The Mastic, NY homeowners’ guide to basement waterproofing services

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

What do you need done? We’ll find top pros.
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