Waterproofing Services
Trusted Waterproofing Services in NYC
Waterproofing is essential for protecting New York City properties from long-term water damage. Heavy rainfall, aging buildings, high groundwater levels, and dense construction make NYC homes and commercial structures more vulnerable to leaks, moisture intrusion, and foundation issues. Many brownstones, townhouses, and older buildings were constructed before modern waterproofing standards, increasing the risk of ongoing water problems.
Uncontrolled moisture can affect basements, foundations, crawl spaces, exterior walls, and concrete surfaces. Even small cracks or damp areas can lead to mold growth, weakened structural components, and poor indoor air quality over time. These issues often become more severe during storms, snowmelt, and seasonal groundwater changes if left untreated.
At SK Group NYC Corp, we provide professional waterproofing services in NYC backed by hands-on experience, proven methods, and local expertise. Our team follows NYC building codes and uses industry-approved materials to deliver reliable, long-term waterproofing solutions. We focus on stopping water at the source, protecting your structure, and helping you maintain a dry, safe, and durable property year-round.
Waterproofing Services We Provide
Roof Waterproofing
Keeping your home safe starts with quality roof waterproofing. At SK Group NYC Corp, we provide reliable roof waterproofing services to stop leaks, dampness, and weather damage before they harm your property. Our team uses advanced methods and waterproof roof coating that seals the surface and blocks water completely. This coating not only protects your roof from rain and snow but also extends its life and reduces repair costs. Whether you own a house or a commercial building, our roof waterproofing service keeps your roof strong, dry, and long-lasting. With expert application and durable results, we make sure your roof can handle New York’s toughest weather while keeping your property safe year after year.
Basement waterproofing
A dry basement means a safe and healthy home, and that’s why our basement waterproofing service is the right choice for you. At SK Group NYC Corp, we protect basements from leaks, cracks, and moisture using modern techniques and durable materials. Our basement waterproofing service keeps water out and prevents mold, dampness, and structural damage. We also provide waterproofing inside basement walls and floors, sealing every corner to block water completely. Whether your basement is used for storage, living space, or utilities, our expert team makes sure it stays dry and secure all year round. With affordable pricing and long-lasting results, SK Group NYC Corp delivers trusted basement waterproofing solutions for homes and businesses across New York City.
Exterior Waterproofing Services
Our exterior waterproofing services in NYC are designed to protect your property from water damage and long-term moisture problems. At SK Group NYC Corp, we provide professional solutions for residential and commercial buildings, ensuring your foundation and exterior walls stay dry. Our team works on balconies, windows, crawl spaces, and other critical areas where water intrusion can occur. We also combine our waterproofing expertise with french drain installations and best exterior paint solutions to provide complete protection against leaks and structural damage. All work is performed according to NYC building codes using proven, durable materials. With our exterior waterproofing services, you can safeguard your property, prevent mold growth, and enjoy long-lasting results.
Foundation Waterproofing
Your foundation is the core of your property, and keeping it dry is the secret to long-term strength. With our trusted foundation waterproofing solutions, you can prevent leaks, cracks, and costly water issues before they spread. We use sealants, drainage systems, and moisture barriers to build a strong waterproof foundation that keeps your home protected year-round. From exterior foundation waterproofing that blocks outside water to interior foundation waterproofing that controls basement moisture, we tailor every solution to your needs. Serving homeowners across Brooklyn, Queens, Manhattan, the Bronx, and Staten Island, our team delivers fast, professional results you can rely on. Secure your property with expert foundation waterproofing services designed for NYC living.
Concrete Waterproofing
Concrete may look strong, but without protection, it easily absorbs water, leading to cracks, mold, and long-term damage. Our professional concrete waterproofing services keep your surfaces durable and safe by sealing them with high-quality systems. Whether it’s your basement floor, walls, patio, or driveway, we use advanced waterproof concrete sealer to stop water intrusion and extend the life of your structure. From preventing leaks to strengthening existing concrete, our team ensures you get reliable concrete waterproofing results. We proudly serve homeowners across Brooklyn, Manhattan, Queens, Staten Island, and the Bronx delivering fast, affordable, and lasting protection. Keep your property strong with our expert waterproof concrete solutions.
Stucco Waterproofing
Stucco waterproofing is the key to keeping your walls strong, durable, and protected from NYC’s harsh weather. Over time, rain and moisture can seep into stucco, causing cracks, peeling, and structural damage. At SK Group NYC Corp, we provide professional stucco waterproofing services that seal and protect your exterior from water intrusion. Our experienced stucco contractors use high-quality stucco materials, coatings, and sealants designed to block moisture while allowing your walls to breathe. Whether it’s a residential or commercial property, our waterproofing process restores beauty, prevents mold growth, and extends your stucco’s lifespan. Choose SK Group NYC Corp for reliable stucco waterproofing in NYC your first defense against water damage.
Thoroseal waterproofing
At SK Group NYC Corp, we provide expert thoroseal waterproofing to protect your home or building from leaks, cracks, and moisture. Thoroseal is a strong cement-based solution that works as a thoroseal waterproof coating for walls, basements, and concrete surfaces. We also use thoroseal foundation coating to seal foundations and stop water from damaging your property. This system bonds deeply with concrete, creating a long-lasting shield against water. Whether you have a damp basement, wet walls, or foundation problems, our thoroseal waterproofing service is the smart, affordable, and safe choice. With SK Group NYC Corp, you can trust that your home will stay dry, strong, and fully protected for years to come.
Thorocoat waterproofing
Protect your walls, roofs, and terraces with expert thorocoat waterproofing from SK Group NYC Corp. Thorocoat is a strong and flexible coating that blocks water, stops dampness, and prevents cracks from forming. It builds a shield on concrete surfaces, making them last longer even in New York’s tough weather. Our team applies thorocoat waterproofing carefully so every part of your home or business stays fully protected. This system not only keeps moisture away but also improves the strength and look of your property. For ana affordable and long-lasting solution, thorocoat waterproofing is one of the best choices to keep your building dry and damage-free.
Our Recent Work
Waterproofing Services FAQs
1. How much does professional waterproofing cost in NYC?
On average, NYC homeowners spend between $3,500 and $8,500 on basement or exterior waterproofing. Costs in boroughs like Brooklyn or Manhattan are often higher due to dense building structures, manual excavation requirements, and strict local Department of Buildings (DOB) regulations. We provide free on-site inspections to give you an accurate, fixed-price quote based on your specific property needs.
2. Do I need a permit for waterproofing services in New York City?
Most minor interior repairs, such as foundation crack injections, do not require a permit. However, major projects involving exterior excavation, structural foundation work, or new drainage connections to city sewers often require a permit from the NYC Department of Buildings (DOB). As a licensed NYC Home Improvement Contractor, we handle all necessary filings and safety compliance to ensure your project meets local building codes.
3. What is the best waterproofing method for NYC brownstones and basements?
For the tight footprints common in NYC brownstones, Interior French Drain Systems combined with a heavy-duty sump pump are often the most effective and cost-efficient solution. This method manages hydrostatic pressure without requiring exterior excavation in narrow alleyways. For flat-roofed buildings, we recommend liquid-applied silicone membranes which provide a seamless, UV-resistant barrier against the city’s heavy rain and snow cycles.
4. Why does my NYC basement leak only during heavy rain?
Basement leaks during heavy storms are usually caused by hydrostatic pressure. In New York City, high water tables and poor soil drainage around older foundations force water through porous concrete or foundation cracks. If you notice “white chalky powder” (efflorescence) or damp spots on your walls, it’s a sign that groundwater is pushing through your foundation and requires a professional moisture barrier or drainage system.
5. Do your waterproofing services come with a warranty?
Yes, our waterproofing systems are backed by a Lifetime Transferable Warranty. In the competitive NYC real estate market, a transferable warranty is a significant asset that increases your property value by providing future buyers with proof of a dry, structurally sound foundation. Our guarantee covers both high-quality materials and professional labor to give you long-term peace of mind.