Waterproofing is one of the most important elements of a kitchen remodel in New York, especially in multi-unit apartment buildings where even a small leak can cause damage to neighbors below. Proper waterproofing prevents water from seeping into subfloors, walls, and cabinets, protecting structural integrity and reducing the risk of mold growth. Contractors use moisture-resistant backer boards behind tile, apply waterproof membranes under flooring, and seal around sinks, dishwashers, and plumbing penetrations to create a protective barrier.
In Manhattan and Brooklyn apartments, co-op and condo boards often require waterproofing as part of alteration agreements. This includes applying liquid-applied membranes or sheet systems beneath tile and ensuring proper sloping to drains where applicable. Kitchens with laundry areas or adjacent bathrooms also require extra care with sealing transitions.
A general contractor NYC manages the process by coordinating with licensed plumbers and tile installers to confirm that all penetrations, joints, and corners are sealed. They also document the waterproofing process for compliance, which is valuable when submitting renovation close-out paperwork.
For more details on protecting your home, see our full overview of kitchen waterproofing in NYC. With professional installation, waterproofing safeguards your investment, prevents costly repairs, and ensures your remodel lasts for decades.