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TRUSTED BY MASTIC, NY HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon22
    Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Mastic, NY

*The Angi rating for Basement Waterproofing companies in Mastic, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Mastic, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on May 14, 2026

Find Basement waterproofing pros in Mastic

Avatar for Zavza Seal, LLC
Zavza Seal, LLC
4.8(
52
)

Serving Mastic, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"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!"
Flooring
Flooring
Flooring
Flooring
Response time7 hrs
Response rate98%
Recommended by95%of homeowners
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Avatar for Home Healthy Homes, Inc.
Home Healthy Homes, Inc.
4.3(
119
)

Serving Mastic, NY and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"These guys were great. I had mold in my basement walls. This company was very knowledgeable and their price was very good. In one day not only was all the mold gone but they also waterproofed my basement. They were professional and fast. I highly recommend them."
Newsday Article
Response time4 hrs
10 neighbors recently requested a quote
Recommended by92%of homeowners
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Napolitano Brothers Contracting, Inc.
4.8(
25
)

Serving Mastic, NY and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"James, his brother Mike and their crew were all you would be looking for in a company. Very polite and respectful. They did all the work as per contract in the time specified. Their workmanship and attention to detail was exceptional. We had other estimates for the same scope of work which came in much higher. We would definitely recommend them for anyone considering basement waterproofing."
Paver Pool Patio and Retaining Wall
Walkway to Pool Patio.
Paver Driveway with Custom Border and Apron
Custom Stone BBQ and Wall
Custom Stone Work

+22

Response time9 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for ProSeal Waterproofing
ProSeal Waterproofing
5.0(
8
)

Serving Mastic, NY and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"I called the owner and he responded quickly and was able to provide a fair quote. The crew showed up on time and did great work."
Response time7 hrs
5 neighbors recently requested a quote
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Avatar for Lorenzo Napolitano Construction Inc.
Lorenzo Napolitano Construction Inc.
4.9(
17
)

Serving Mastic, NY and surrounding areas

Approved

In business since 1994

Free estimates

Customers say: True professional

"Top notch workmanship. Honest and reliable. They stay with the project through the finish. Very helpful in making suggestions when needed. I strongly recommend Lorenzo Napolitano for your next project."
Patio
Concrete pool coping
Patio
Patio finished
Patio finished

+72

Response time7 hrs
Response rate86%
3 neighbors recently requested a quote
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Avatar for Rezy Save NY LLC
Rezy Save NY LLC
5.0(
11
)

Serving Mastic, NY and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

"Zach was fantastic. Professional, reliable, and extremely knowledgeable. The sump pump installation was done perfectly, and zach took the time to explain everything. Clean work, fair pricing, and great communication. I’d absolutely recommend Zach and would hire him again without hesitation."
Aire Serv of Long Island
Aire Serv of Long Island
Aire Serv of Long Island
Aire Serv of Long Island
Aire Serv of Long Island

+4

1 neighbors recently requested a quote
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Avatar for Foundation Crack Repair, LLC
Foundation Crack Repair, LLC
4.4(
15
)

Serving Mastic, NY and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Im am so happy with the work that was done on my house. Tyler came and gave a very fair estimate on lifting my concrete side entrance stairs to my basement. He explained every step of the process and did exactly what we wanted with no issues. Everything was done to perfection. No damage was done and you cant even tell the stairs ever needed a repair in the first place. I would highly recommend this company and would hire again for any future jobs."
Foundation Repair Ex.
Basement Repair Project
Response time2 days
77 neighbors recently requested a quote
Recommended by16%of homeowners
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Basement Waterproofing questions, answered by experts

Physically, the most challenging part of finishing a basement is installing egress windows or doors when the space is below ground level. Mentally, the hardest part may be envisioning the project and planning around load-bearing and mechanical obstacles.

Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.

Basements with persistent moisture problems or flooding shouldn’t be finished until the moisture issues have been fixed. In addition, if your foundation is cracked, you have unmitigated radon levels, or you have asbestos or lead pipes, remediate the underlying problem before finishing your basement. Turning a basement into living space before fixing these issues can lead to serious health risks or structural damage. 

In some circumstances, foundation refacing or repair may be a better option for your home than sealing a foundation. It’s always a good idea to take steps to prevent moisture problems in your foundation, but if there are any structural concerns, those will usually need to be fixed first. When dealing with foundation issues, it’s a good idea to get a professional opinion so you can avoid bigger problems down the road. 

Yes, it is generally unhealthy and can be dangerous to live in a damp basement. The damp air can negatively affect your breathing and lungs, and the moisture promotes mold growth and pest infestations. Inhaling mold spores or waste particles from insects and rodents attracted to the moisture can be hazardous. This damp, moldy air can also circulate into your main living area. It is crucial to resolve any moisture problems and implement preventative measures before using your basement as a living space.

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.

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