Get matched with top basement waterproofing pros in Fishers Island, NY
There are 18 highly-rated local basement waterproofing pros.
TRUSTED BY FISHERS ISLAND, NY HOMEOWNERS
4.3 
33 Verified Reviews for Basement Waterproofing pros in Fishers Island, NY
*The Angi rating for Basement Waterproofing companies in Fishers Island, 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 Fishers Island, 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 June 13, 2025
Basement waterproofing pros in Fishers Island
New York Waterproofing is the world's foremost authority on basement waterproofing. Starting at $1299 with a lifetime guarantee, we offer the most competitively priced and hassle-free solutions. Utilizing proprietary technology, we effectively stop water infiltration without the need for pumps or French drains. Our unique process does not require external excavation and most jobs average just three hours, ensuring minimal disruption. We guarantee to beat any verifiable lower offer by a minimum of 10%, underscoring our commitment to providing the best value.
"excellent company. efficient, knowledgeable, job completed in one afternoon with a complete guarantee. Highly recommend NY waterproofing"
Gale M on August 2024
New York Waterproofing is the world's foremost authority on basement waterproofing. Starting at $1299 with a lifetime guarantee, we offer the most competitively priced and hassle-free solutions. Utilizing proprietary technology, we effectively stop water infiltration without the need for pumps or French drains. Our unique process does not require external excavation and most jobs average just three hours, ensuring minimal disruption. We guarantee to beat any verifiable lower offer by a minimum of 10%, underscoring our commitment to providing the best value.
"excellent company. efficient, knowledgeable, job completed in one afternoon with a complete guarantee. Highly recommend NY waterproofing"
Gale M on August 2024
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
**We have now expanded our Foundation Services**Long Hill Masonry has been providing a tradition of expert craftsmanship, quality and service for over 30 years. The company is owned and operated by Joseph Tavella, who himself comes from generations of masons. It is our goal to achieve the highest standard of quality in every project. We guarantee our workmanship for one full year, and most projects are payable upon completion of job take a look at our website at www.longhillmasonry.com
"Joe Cam down to do an estimate and he was very knowledgeable. The Quote was Fair and I had hired them to do the job. They came on time and the job came out great. I would recommend Long Hill to everyone I know"
Christian G on August 2023
**We have now expanded our Foundation Services**Long Hill Masonry has been providing a tradition of expert craftsmanship, quality and service for over 30 years. The company is owned and operated by Joseph Tavella, who himself comes from generations of masons. It is our goal to achieve the highest standard of quality in every project. We guarantee our workmanship for one full year, and most projects are payable upon completion of job take a look at our website at www.longhillmasonry.com
"Joe Cam down to do an estimate and he was very knowledgeable. The Quote was Fair and I had hired them to do the job. They came on time and the job came out great. I would recommend Long Hill to everyone I know"
Christian G on August 2023
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
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"Thomas and Angelo (his crewman) were fantastic. (He had more crew, but Angelo was the only one whose name I knew.) They correctly diagnosed the problem (foundation cracks), sealed everything, installed a new sump pump and redid the flooring. They kept me informed every step of the way and started work within a day or two of hiring. The basement has remained dry as a bone ever since. One thing to note: They do require payment quickly (not all upfront but soon) and do not take credit cards."
Nathan S on February 2025
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"Thomas and Angelo (his crewman) were fantastic. (He had more crew, but Angelo was the only one whose name I knew.) They correctly diagnosed the problem (foundation cracks), sealed everything, installed a new sump pump and redid the flooring. They kept me informed every step of the way and started work within a day or two of hiring. The basement has remained dry as a bone ever since. One thing to note: They do require payment quickly (not all upfront but soon) and do not take credit cards."
Nathan S on February 2025
Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.
"Overall, working with the company was a good experience."
Marcy W on October 2024
Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.
"Overall, working with the company was a good experience."
Marcy W on October 2024
Because we have the experience, expertise, and equipment to meet and surpass customer expectations. Our motto is just solutions
Because we have the experience, expertise, and equipment to meet and surpass customer expectations. Our motto is just solutions
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
We are a Long Island full service restoration company we can handle your fire, water, smoke, vandalism, mold, asbestos, and lead concerns. We are experienced in working with all major insurance companies to minimize your out of pocket costs. We also offer financing options to insure that your project is done your way.
"Restoration Experts were amazing cleaning my house and handling my insurance company after a puff back. I had gotten a free consultation showing that indeed my oil burner leaked soot. The entire crew was meticulous handling the cleaning and made my house look brand new. Arnie and his staff were thorough. The entire process was so quick and easy and was handled with such care. I highly recommend Restoration Experts"
katie l on February 2024
We are a Long Island full service restoration company we can handle your fire, water, smoke, vandalism, mold, asbestos, and lead concerns. We are experienced in working with all major insurance companies to minimize your out of pocket costs. We also offer financing options to insure that your project is done your way.
"Restoration Experts were amazing cleaning my house and handling my insurance company after a puff back. I had gotten a free consultation showing that indeed my oil burner leaked soot. The entire crew was meticulous handling the cleaning and made my house look brand new. Arnie and his staff were thorough. The entire process was so quick and easy and was handled with such care. I highly recommend Restoration Experts"
katie l on February 2024
Enviroduct is Long Island’s Number #1 Indoor Air Quality Service Provider. Enviroduct is local Long Island business that, Ron Palladino started back in 1996. It has been my hope to improve the health of Long Island, by giving the community clean quality air at their home or business. As the business has grown, my staff and I pride ourselves on our reliability, efficient work force and consistent customer satisfaction. This includes using state-of-the-art cleaning equipment and eco-friendly sanitizing agents, that will leave your home free of harmful allergen particulates and microbial growth. We are completely dedicated to improve your Indoor Air Quality.
Enviroduct is Long Island’s Number #1 Indoor Air Quality Service Provider. Enviroduct is local Long Island business that, Ron Palladino started back in 1996. It has been my hope to improve the health of Long Island, by giving the community clean quality air at their home or business. As the business has grown, my staff and I pride ourselves on our reliability, efficient work force and consistent customer satisfaction. This includes using state-of-the-art cleaning equipment and eco-friendly sanitizing agents, that will leave your home free of harmful allergen particulates and microbial growth. We are completely dedicated to improve your Indoor Air Quality.
FAQs for basement waterproofing projects in Fishers Island, NY
Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:
Water in your basement, including damp walls or puddles on the floor
Mold spots in your basement
Musty smells or odors
Warped doors or walls
Cracks in walls
Insect issues, such as cockroaches and termites
You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home.
However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.
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.
Several factors dictate if you should waterproof the interior or exterior of your basement. Waterproofing the exterior of your home is a great option if you use your basement for storage, as it provides the most protection from water and water damage. If you prefer work done outside of your home versus inside, exterior waterproofing is best for you. However, interior waterproofing is often less expensive since the area is easier to reach and requires less labor.
The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.
If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.
Get our Angi-powered app
