4.8 
22 *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
Serving Mastic, NY and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"George did the waterproofing in my basement, it was a good job"
+12
Serving Mastic, NY and surrounding areas
Approved
In business since 2021
Free estimates
Credit card accepted
"This was the second time I hired zavza seal. This time I needed help with attic insulation for my parents house. Starting with setting up the free appointment, ending with the crew and quality of the work - they deliver a great experience and I highly recommend them for anything waterproofing, insulation, concrete and foundation fixes. If you are looking for a contractor and donâ t know who is trustworthy and professional, go with Zavzaseal, you ll be in a very good hands."
Serving Mastic, NY and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
"We wanted to finish our basement but was hesitant bc of our flooding problems. Home healthy homes solved that for us. They came in waterproofed and removed all mold. We have had heavy rainstorms since and no more floods! Glen and the team are so professional and could not be more helpful. They are reasonable and worth every dime! Highly highly recommend!! They go above and beyond."
Serving Mastic, NY and surrounding areas
Approved
In business since 1990
Free estimates
Emergency services offered
"The guys were very through on explaining everything they were going to do in my basement. They were very professional. The work they did was excellent. I rate these guys 5 plus stars. There work is phenomenal! There costs were very responsible! I would highly recommend these guys."
+22
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."
Serving Mastic, NY and surrounding areas
Approved
In business since 1991
Free estimates
Emergency services offered
"Had a backup a few days before and wanted to determine if it was a simple clog or cesspool related. They sent out a tech (Jimmy) the same day. He located both cesspools and walked me through my options. He was honest and patient, answering all my questions along the way."
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."
+72
Serving Mastic, NY and surrounding areas
Approved
In business since 2017
Free estimates
Offers commercial services
"Highly recommend, professional quality work. Made the project enjoyable and easy!"
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."
Serving Mastic, NY and surrounding areas
Approved
In business since 2024
Emergency services offered
Warranties offered
"We had two toilets that needed to be installed, They showed up on time and got the job done. The town picked up up the old ones."
+4
From average costs to expert advice, get all the answers you need to get your job done.
Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
An unfinished basement has a lot of potential for a family room or guest suite. So how much does it cost to finish a basement? Read on for all cost factors.
Dealing with a damp basement? Follow these steps for DIY basement waterproofing to keep water and moisture out and boost your home’s energy efficiency.
Struggling with a damp basement? Learn about basement waterproofing and how these tips can help keep your basement safe from the elements.
Can’t seem to get rid of the moisture and mold in your basement? Learn why basements tend to hold moisture and how to get rid of moisture in the basement.
Unearth the root causes of water seepage in your basement floor. Explore effective solutions to keep your basement dry and your home protected.
