Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Shelter Island, NY

There are 15 highly-rated local basement waterproofing pros.

Need a pro for your basement waterproofing project in Shelter Island, NY?

Select your specific project to find the pro for you.

TRUSTED BY SHELTER ISLAND, NY HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon40
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Shelter Island

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
16 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 Ixhua Masonry & Landscaping, LLC

Ixhua Masonry & Landscaping, LLC

47 Ponquogue Ave.
New on AngiNew on Angi
Approved Pro

Ixhua Masonry & Landscaping, LLC

47 Ponquogue Ave.
New on AngiNew on Angi
Approved Pro
5 years of experience
Free onsite estimate

Ixhua Masonry & Landscaping, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests and make their concerns the basis of our business.**Over 10 Years Experience**

Ixhua Masonry & Landscaping, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests and make their concerns the basis of our business.**Over 10 Years Experience**


Avatar for Twin Fork Waterproofing, LLC

Twin Fork Waterproofing, LLC

PO Box 1073
4.32(
27
)
Approved Pro

Twin Fork Waterproofing, LLC

PO Box 1073
4.32(
27
)
Approved Pro
Customers say: Quick response
10 local quotes requested
48 years of experience

For over 30 years Twin Fork Waterproofing, Inc. has been a family owned and operated business located on the East End of Long Island. We have been the #1 choice of thousands of homeowners and businesses on the North and South Forks and Shelter Island for basement waterproofing and mold disinfection, safe insulation, foundation repair, drainage systems, dehumidifiers, remediation of rodent feces, etc. Twin Fork Waterproofing, Inc. Uses all environmentally safe mildicides and disinfections for your safety and guarantees our work. Call or text us today for a free evaluation.

"Just excellent start to finish - I’ve been battling water in my basement for years and finally have no more anxiety during a heavy rainstorm. The new humidifier and waterproofed basement was money well spent - and the work and care from this top notch team was outstanding. Highly recommend them. Quality work at a fair price."

Marian Z on May 2025

For over 30 years Twin Fork Waterproofing, Inc. has been a family owned and operated business located on the East End of Long Island. We have been the #1 choice of thousands of homeowners and businesses on the North and South Forks and Shelter Island for basement waterproofing and mold disinfection, safe insulation, foundation repair, drainage systems, dehumidifiers, remediation of rodent feces, etc. Twin Fork Waterproofing, Inc. Uses all environmentally safe mildicides and disinfections for your safety and guarantees our work. Call or text us today for a free evaluation.

"Just excellent start to finish - I’ve been battling water in my basement for years and finally have no more anxiety during a heavy rainstorm. The new humidifier and waterproofed basement was money well spent - and the work and care from this top notch team was outstanding. Highly recommend them. Quality work at a fair price."

Marian Z on May 2025


Avatar for New York Waterproofing

New York Waterproofing

5 Bell Circle
4.97(
17
)
Approved Pro

New York Waterproofing

5 Bell Circle
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


Avatar for Lorenzo Napolitano Construction Inc.

Lorenzo Napolitano Construction Inc.

4 Quogue Plaza Trail
4.94(
16
)
Approved Pro

Lorenzo Napolitano Construction Inc.

4 Quogue Plaza Trail
4.94(
16
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
31 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


Avatar for M.O.E. Masonry, Inc.

M.O.E. Masonry, Inc.

P.O. Box 2102
New on AngiNew on Angi
Approved Pro

M.O.E. Masonry, Inc.

P.O. Box 2102
New on AngiNew on Angi
Approved Pro
29 years of experience
Free onsite estimate

Our mission at M.O.E. Masonry, Inc., is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! M.O.E. Masonry, Inc., stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

Our mission at M.O.E. Masonry, Inc., is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! M.O.E. Masonry, Inc., stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!


Avatar for Razaline Builders Inc

Razaline Builders Inc

8684 25th Avenue, 2nd Floor
4.50(
6
)
Approved Pro

Razaline Builders Inc

8684 25th Avenue, 2nd Floor
4.50(
6
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

Razaline Builders Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Great, called quickly, came over immediately, did the job the next day and did it well."

Adam K on March 2023

Razaline Builders Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Great, called quickly, came over immediately, did the job the next day and did it well."

Adam K on March 2023


Avatar for Best Cut Woodworks

Best Cut Woodworks

1 The Mastics
5.00(
1
)

Best Cut Woodworks

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

Colors have the incredible ability to transform spaces, evoke emotions, and create a unique atmosphere. At Best Cut Woodworks, we specialize in providing expert interior painting services that breathe new life into your home, reflecting your personal style and aspirations.  Our Approach to Interior Painting Painting is an art, and we approach it with creativity, precision, and a dedication to perfection. Our skilled painters understand the nuances of color, texture, and technique, ensuring that every brushstroke contributes to the overall aesthetic of your space. Why Choose Our Interior Painting Services? Expertise: Our team of experienced painters brings years of expertise to the table, ensuring a flawless finish and attention to detail. Customization: We believe that your home should be a reflection of you. That's why we work closely with you to choose the perfect colors that align with your style and preferences. Quality Materials: We use high-quality paints and materials to guarantee long-lasting and beautiful results. Efficiency: We understand the importance of time, and we work efficiently to complete projects within agreed-upon timelines. Attention to Detail: From preparing the surfaces to the final coat, we meticulously execute each step to achieve a smooth and even finish. we are currently looking to take on more painting, interior and exterior! we also offer all phases of home construction and remodeling , and outdoor services to! such as; lawn maintenance and fence installs and creation. find us on Facebook for builds and projects for sale on ebay! (amazon coming soon)

"Alex Understood the project I wanted with my deck and it came out better than expected! Since then I also had him back for my fencing, flooring, Painting and other jobs like he made me a custom made door. He always out does himself and gets the job done effectively. I highly recommend Alex to complete any project you have in mind. He will get it done to your expectations!"

Brenda S on September 2024

Colors have the incredible ability to transform spaces, evoke emotions, and create a unique atmosphere. At Best Cut Woodworks, we specialize in providing expert interior painting services that breathe new life into your home, reflecting your personal style and aspirations.  Our Approach to Interior Painting Painting is an art, and we approach it with creativity, precision, and a dedication to perfection. Our skilled painters understand the nuances of color, texture, and technique, ensuring that every brushstroke contributes to the overall aesthetic of your space. Why Choose Our Interior Painting Services? Expertise: Our team of experienced painters brings years of expertise to the table, ensuring a flawless finish and attention to detail. Customization: We believe that your home should be a reflection of you. That's why we work closely with you to choose the perfect colors that align with your style and preferences. Quality Materials: We use high-quality paints and materials to guarantee long-lasting and beautiful results. Efficiency: We understand the importance of time, and we work efficiently to complete projects within agreed-upon timelines. Attention to Detail: From preparing the surfaces to the final coat, we meticulously execute each step to achieve a smooth and even finish. we are currently looking to take on more painting, interior and exterior! we also offer all phases of home construction and remodeling , and outdoor services to! such as; lawn maintenance and fence installs and creation. find us on Facebook for builds and projects for sale on ebay! (amazon coming soon)

"Alex Understood the project I wanted with my deck and it came out better than expected! Since then I also had him back for my fencing, flooring, Painting and other jobs like he made me a custom made door. He always out does himself and gets the job done effectively. I highly recommend Alex to complete any project you have in mind. He will get it done to your expectations!"

Brenda S on September 2024


Avatar for Oscar’s complete landscaping

Oscar’s complete landscaping

Located In:
5.00(
8
)

Oscar’s complete landscaping

Located In:
5.00(
8
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We specialize in all phases of landscaping, hardscaping, lawn maintenance, fertilization, masonry, pool services, housecleaning and more. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service. As an added bonus, your first week of lawn maintenance is free! Call -or- click to schedule a free estimate today!

"Eric, Oscar and crew were an absolute pleasure to work with. They are true craftsman and did a fantastic Job on my driveway. They completed the job very quickly, cleaning up at the end of each day. I give Dream Pro Care my highest recommendation!"

Ron L on October 2024

We specialize in all phases of landscaping, hardscaping, lawn maintenance, fertilization, masonry, pool services, housecleaning and more. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service. As an added bonus, your first week of lawn maintenance is free! Call -or- click to schedule a free estimate today!

"Eric, Oscar and crew were an absolute pleasure to work with. They are true craftsman and did a fantastic Job on my driveway. They completed the job very quickly, cleaning up at the end of each day. I give Dream Pro Care my highest recommendation!"

Ron L on October 2024


All Boro Inc

42 Maple Pl
No reviews yet

All Boro Inc

42 Maple Pl
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

A moisture or vapor barrier helps separate the warm air inside your home from the cold air outside of it. Without it, your walls could collect condensation, mold, or other damage. Check your local building codes to see if including an interior vapor barrier is necessary for your building project or renovation, especially for rooms that are likely to be humid, like bathrooms.

If you don’t wish to dig it out and convert it into a finished basement, you can still encapsulate your crawl space to protect it from damage for an average cost of $5,500. Finishing a crawl space beyond this isn’t really worthwhile, as the low ceilings mean you won’t be able to use the area as living space.

Signs include persistent dampness, mold or mildew presence, musty odors, and visible water stains. If any of these occur, it is advisable to contact a professional for an inspection.

A plastic vapor barrier should completely cover your basement to prevent water from penetrating through the walls. This typically goes before installing insulation to prevent moisture from building up and becoming trapped on the inside of your insulation, where it can collect and lead to mold damage. Installing insulation after the vapor barrier allows for any moisture to exit the walls for better ventilation.

Mold and mildew are the things in basements that actually cause the musty odors, but moisture is the underlying issue that causes mold and mildew growth. Addressing moisture and water problems and then removing materials that are moldy are some of the best ways to get rid of the musty odors. Preventive measures after that—like installing air fresheners and a dehumidifier—can help keep musty odors from returning.

The Shelter Island, 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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