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TRUSTED BY DEER PARK, NY HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon53
    Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Deer Park, NY

*The Angi rating for Basement Waterproofing companies in Deer Park, 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 Deer Park, 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 October 22, 2025

Find Basement waterproofing pros in Deer Park

Basement Man

5.00(
16
)
•Approved Pro

Basement Man

5.00(
16
)
•Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
15 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

Avatar for SAP CONCRETE & MASONRY, INC

SAP CONCRETE & MASONRY, INC

43 Hemlock Street
5.00(
5
)
•Approved Pro

SAP CONCRETE & MASONRY, INC

43 Hemlock Street
5.00(
5
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

SAP Concrete & Masonry Inc. Is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have hands on experience, to provide innovative Ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are Involved with. Please feel free to contact us today! 631-793-2902

"They did a very good job and always keep the site clean I will use them on my next project for sure."

Karen M on July 2024

SAP Concrete & Masonry Inc. Is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have hands on experience, to provide innovative Ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are Involved with. Please feel free to contact us today! 631-793-2902

"They did a very good job and always keep the site clean I will use them on my next project for sure."

Karen M on July 2024

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
42 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 Diamond Masonry & Waterproofing

Diamond Masonry & Waterproofing

1378 Whittier Avenue
5.00(
5
)

Diamond Masonry & Waterproofing

1378 Whittier Avenue
5.00(
5
)
76 local quotes requested

Diamond Masonry & Waterproofing was founded on a passion for the trade. We have been in the masonry and basement waterproofing trade since 1988 and formed diamond masonry & waterproofing in 2000.our knowledge and expertise of the industry has led us to small jobs and large scale commercial projects. No job is the same so we enjoy the challenges of all projects.

Diamond Masonry & Waterproofing was founded on a passion for the trade. We have been in the masonry and basement waterproofing trade since 1988 and formed diamond masonry & waterproofing in 2000.our knowledge and expertise of the industry has led us to small jobs and large scale commercial projects. No job is the same so we enjoy the challenges of all projects.

Avatar for Ruben's Masonry

Ruben's Masonry

Yalta Drive
No reviews yet

Ruben's Masonry

Yalta Drive
No reviews yet
5 years of experience

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

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

124 Morris Avenue
No reviews yet

K&J Home improvement

124 Morris Avenue
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.

Avatar for E. Bludaj Construction Inc

E. Bludaj Construction Inc

2047 Holland Avenue
5.00(
3
)

E. Bludaj Construction Inc

2047 Holland Avenue
5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

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

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

Avatar for Baaz Contractors Inc

Baaz Contractors Inc

Lefferts Blvd
No reviews yet

Baaz Contractors Inc

Lefferts Blvd
No reviews yet
32 years of experience

Designing your dream home begins with understanding your vision, preferences, and lifestyle. Our experienced team collaborates with you to create a personalized plan, considering architectural style, layout, and amenities. We prioritize quality construction, ensuring your dream home is built to last. Transparent communication and attention to detail guide the process, resulting in a home that not only meets but exceeds your expectations.

Designing your dream home begins with understanding your vision, preferences, and lifestyle. Our experienced team collaborates with you to create a personalized plan, considering architectural style, layout, and amenities. We prioritize quality construction, ensuring your dream home is built to last. Transparent communication and attention to detail guide the process, resulting in a home that not only meets but exceeds your expectations.

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Basement Waterproofing questions, answered by experts

Regular inspections, proper drainage management, and ensuring soil stability help prevent future settlement issues.

Basements are commonly converted into game rooms. The potential challenges you may run into include controlling moisture, working with low ceilings, limited natural light, and the need for additional electrical or HVAC work. Addressing these issues can add to the total cost, but it ensures a comfortable and functional space.

You don’t always need to install a dehumidifier in your encapsulated crawl space, but it might be a good idea in certain instances. If you notice obvious signs of condensation, mold, or musty smells permeating from your crawl space, a dehumidifier can help. It’s ideal for homes in humid areas.

In a worst case scenario, structural damage like rust on metal beams, rotting wood, and swelling on doors and windows can signal moisture problems that would benefit from a dehumidifier.

Underfloor insulation alone will not cause moisture and mold, but improper installation can. Although the purpose is to seal any drafts, your subfloor still needs ventilation. If you seal the area too tightly and prevent all airflow, this can cause moisture to get trapped. This moisture eventually leads to mold and—if your floors are wood—rotting.

Water can seep into porous materials like wood beams, floor joists, and roof rafters within minutes, but they’ll need to see prolonged exposure before you have structural damage. Mold can start growing within 24 hours, and mold can eat away at the structural components over time. Wood rot is more of a concern, though. Wet and dry rot are fungal infections that set in in moist conditions and rapidly deteriorate wood, causing major structural damage within just a few months in some cases.

The Deer Park, 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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