Water intrusion can weaken your property’s foundation, damage interior spaces, and lead to costly repairs. At NDCC, we provide professional waterproofing services that help safeguard residential and commercial properties against moisture, leaks, and structural deterioration.
Our experienced team provides customized waterproofing solutions for foundations, basements, roofs, exterior walls, balconies, and other vulnerable areas. We carefully assess your property’s condition to identify the source of water intrusion and recommend the most effective waterproofing system for long-term performance.
Licensed & Insured Waterproofing Contractors
Premium Quality Materials
Clear, Upfront Estimates
Free On-Site Estimates
Residential & Commercial Projects
Skilled & Experienced Craftsmen
On-Time Project Completion
Customer-First Approach
NYC Licensed
DCWP #2127843-DCWP
We provide clear written estimates with no hidden costs, so you understand every aspect of your waterproofing project.
Move the slider to compare real waterproofing projects completed by our team for homeowners throughout New York City.
Our licensed estimator visits your property, documents scope, and identifies structural considerations.
A comprehensive written estimate with material specifications, timeline, and a clear line-item scope.
Our in-house crew, never subcontractors, executes with daily site reporting and quality checkpoints.
Joint walkthrough against original scope. Work is only signed off when it meets our standard and yours.
Move the slider to compare real waterproofing projects completed by our team for homeowners throughout New York City.
Every project starts with a no-obligation site inspection. Share your property details and our waterproofing estimator will contact you within 24 hours to arrange a visit.
347-335-5005
info@ndccny.com
Within 24 Hours, Mon to Sat
Full liability coverage
DCWP #2127843-DCWP
Serving NYC since 2014
On every project
It depends on whether the fix is interior or exterior, how much wall and floor is affected, the source of the water, and whether a sump pump, French drain, or crack injection is needed. We find the actual source first, then put the scope in a written estimate so the number fits your problem, not a generic quote. Ask for a free inspection.
Usually water pressure against the foundation from poor drainage, cracks in the walls or floor, failed old waterproofing, clogged or missing footing drains, or grading that slopes toward the house. We diagnose which one it is instead of just sealing the surface.
Interior systems (drainage channel, sump pump, vapor barrier) manage water that gets in and are less disruptive. Exterior waterproofing (excavating and sealing the foundation from outside) stops water before it enters and is the more thorough fix. We recommend the right one after seeing the source and your setup.
Interior systems and crack repairs are often one to three days. Exterior excavation and foundation sealing take longer and depend on access and depth. You get a firm timeline in the written estimate before we start.
Yes. We handle crack injection, footing and French drains, sump pump systems, exterior foundation membranes, and stucco or parging repair, so the whole water problem is solved by one crew.
Stopping the water at the source removes what mold needs to grow. Once the basement stays dry, the damp smell and recurring mold clear up. If there is existing mold, it should be remediated as part of the job.
We fix the actual source rather than covering it, use proper drainage and materials rated for below grade, and stand behind our work. If water finds another way in, we come back and make it right.
Yes. National Design and Contracting is a licensed NYC home improvement contractor, DCWP #2127843-DCWP, and fully insured. We have waterproofed homes across the five boroughs since 2014. Free estimate: (347) 335-5005.
