24+ YEARS EXPERIENCE | FULLY LICENSED | FULLY INSURED
24+ YEARS EXPERIENCE | FULLY LICENSED | FULLY INSURED
Protect your foundation, basement, and masonry surfaces with professional Thoroseal waterproofing designed for New York City weather conditions.
Water intrusion can weaken foundations, damage masonry, and lead to costly structural repairs. In New York City, buildings face constant exposure to rain, humidity, and freeze-thaw cycles that allow moisture to penetrate concrete and brick surfaces.
Our professional thoroseal waterproofing services create a durable protective barrier that helps prevent water damage, foundation deterioration, and interior moisture problems. We provide thorocoat and thoroseal in NYC for residential and commercial properties across Brooklyn, Queens, Manhattan, and the Bronx.
We provide complete thorocoat waterproofing services that NYC property owners rely on for long-term protection.
Foundation walls are constantly exposed to soil moisture and groundwater. Our Thoroseal foundation coating creates a protective barrier that reduces water penetration and strengthens surface durability. Proper foundation sealing helps prevent cracks, efflorescence, and structural weakening.
Basement walls often absorb moisture through porous concrete or masonry block. Thoroseal waterproofing helps reduce dampness, minimize mold risk, and protect interior spaces from water stains and deterioration.
Exterior brick walls in NYC are vulnerable to rain and freeze-thaw damage. Applying thorocoat or thoroseal improves water resistance while preserving masonry integrity. This helps extend the lifespan of brick facades and brownstone exteriors.
Stoops and porches endure heavy foot traffic and weather exposure. Waterproof coating prevents surface cracking and moisture absorption while maintaining a clean, uniform appearance.
Concrete decks and exterior surfaces can develop surface cracks that allow water intrusion. Waterproof coatings add protection and reduce surface deterioration over time.
Before applying Thoroseal waterproofing, we repair visible cracks and prepare surfaces thoroughly. Proper preparation ensures strong bonding and long-lasting results.
Thoroseal is a cement-based waterproof coating designed for masonry and concrete surfaces. Unlike standard exterior paint, it bonds directly to porous materials such as brick, block, and foundation walls. Once applied, it forms a water-resistant barrier while still allowing vapour transmission to reduce trapped moisture.
Thoroseal waterproofing is commonly used for:
Because it penetrates into the surface rather than sitting on top like paint, it offers stronger long-term performance against water intrusion.
Protect your foundation, basement, and masonry surfaces with professional Thoroseal waterproofing services designed for New York City conditions. Whether you need thorocoat waterproofing services NYC property owners trust or foundation coating for long-term protection, our team is ready to assist. Contact us today to schedule an inspection and receive a detailed waterproofing estimate.
Many property owners ask about the difference between Thorocoat and Thoroseal in NYC. While both products are used for waterproofing, they serve slightly different purposes.
Thorocoat is an elastomeric masonry coating. It provides flexibility and surface protection for exterior brick walls and facades. It is ideal for improving appearance while adding moisture resistance.
Thoroseal is a cement-based waterproof coating. It penetrates deeper into masonry and concrete surfaces, making it better suited for foundation coating, basement waterproofing, and areas exposed to consistent moisture.
In many NYC projects, the right product depends on the surface condition, water exposure level, and long-term maintenance goals. We evaluate each property to determine whether Thorocoat waterproofing services or Thoroseal waterproofing & foundation coating is the better solution.
New York City weather conditions make waterproofing essential. Buildings face:
These environmental factors allow water to penetrate masonry surfaces and weaken structural materials. Thoroseal waterproofing & foundation coating reduces moisture absorption and helps protect structural integrity.
For older brownstones and masonry buildings, waterproofing is especially important. Preventing water infiltration today helps avoid costly foundation repairs in the future.
Thoroseal waterproofing in NYC typically ranges between $5 to $12 per square foot, depending on surface condition, preparation needs, and building access. Foundation coating and basement waterproofing projects may vary based on wall height and crack repair requirements.
Small residential waterproofing projects may start around $2,000 to $4,000, while larger foundation or commercial projects can range from $5,000 to $15,000 or more, depending on scope. We provide detailed written estimates after on-site evaluation to ensure accurate pricing.
We follow a structured application process to ensure long-term durability, proper bonding, and consistent waterproof performance across all treated surfaces.
We conduct a detailed inspection of masonry and concrete surfaces to identify cracks, surface deterioration, and moisture concerns. This step helps determine the appropriate preparation and coating method.
All surfaces are thoroughly cleaned to remove dust, debris, efflorescence, and loose materials. Proper surface preparation is essential to maximise coating adhesion and long-term performance.
Visible cracks, small voids, and surface imperfections are sealed or patched before coating application. Addressing these areas prevents water entry beneath the waterproof barrier.
When required, a compatible primer or base layer is applied to enhance surface stability and bonding strength. This ensures uniform absorption and consistent coating performance.
The selected waterproof coating is evenly applied using professional methods to achieve complete surface coverage. Proper thickness and curing conditions are carefully maintained.
After application, we review the finished surface to confirm uniform coverage, proper curing, and effective structural protection against moisture intrusion.
We provide Thoroseal waterproofing services throughout:
Our team understands the structural demands of NYC masonry buildings, from historic brownstones to modern concrete foundations. We tailor thorocoat and thoroseal waterproofing solutions to local weather conditions, building types, and moisture exposure levels to ensure long-term protection and durability.
We provide professional Thoroseal waterproofing solutions for both residential and commercial properties throughout New York City, protecting structures from moisture damage and long-term deterioration.
We apply Thoroseal waterproofing for:
Proper waterproofing protects living spaces, strengthens foundation walls, and reduces the risk of mould, dampness, and structural weakening caused by moisture intrusion.
Commercial properties require consistent moisture protection to maintain structural stability and avoid operational disruptions. We provide thorocoat waterproofing services NYC businesses trust for:
Professional waterproofing safeguards foundations, preserves masonry surfaces, and supports long-term building performance in demanding urban conditions.
When properly applied to prepared masonry or concrete surfaces, Thoroseal waterproofing can last between 10 and 20 years. Longevity depends on weather exposure, surface condition, and routine maintenance.
Yes. Thoroseal is a cement-based coating that bonds directly to masonry surfaces and provides stronger water resistance than traditional exterior paint. It penetrates porous materials instead of sitting only on the surface.
Thoroseal helps reduce moisture penetration and surface dampness. However, active leaks caused by structural cracks or drainage issues may require additional repair before coating application.
Thorocoat is an elastomeric coating that provides flexible surface protection for masonry walls. Thoroseal is cement-based and designed for deeper penetration, making it ideal for foundations and basement walls.
Waterproofing in NYC typically ranges from $5 to $12 per square foot depending on surface preparation and accessibility. Larger foundation projects or crack repairs may increase overall costs.
Reducing moisture intrusion helps lower the risk of mould growth in basements and foundation areas. Proper waterproofing improves interior air quality and protects structural materials.
Waterproof coatings perform best when applied in moderate temperatures. Extremely cold conditions may affect curing time and surface bonding.
Most exterior waterproof coatings do not require permits. However, structural repairs or major facade work may require compliance approval depending on project scope.
