The leak you see inside may be only the beginning. Water sitting above the building can quietly damage insulation, membranes, interiors, and valuable equipment while repair costs continue to climb. We find the source, evaluate the condition beneath the surface, repair what needs attention, and apply a seamless protective system.
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Call (917) 268-3699 for a Free EstimatePlaceholder — seamless silicone membrane on a NYC flat roof
Silicone is a moisture-cured elastomeric material that forms a seamless membrane after application. Its strongest advantage is resistance to prolonged ponding water. That makes it particularly useful when drainage is imperfect and water remains on the surface after rainfall.
Performance still depends on the selected product, substrate, preparation, application rate, and manufacturer's requirements. Positive drainage remains preferable; this treatment should never be used to hide structural damage, saturated insulation, or a failing assembly.
Ponding water is one of the main reasons property owners consider this material. Certain systems are specifically designed to withstand prolonged water exposure, while acrylic systems generally require better drainage.
A properly selected membrane can remain flexible through seasonal temperature changes and resist degradation from prolonged sunlight. In New York, summer heat, cold, precipitation, and freeze-thaw cycles place continuous stress on exterior surfaces.
Service life varies by product, thickness, exposure, maintenance, and installation quality. Rather than promising a fixed number of years, we evaluate the assembly and specify a system according to its intended performance and warranty requirements.
Light-colored products can reduce solar heat absorption and may contribute to lower cooling demand. Product ratings should be checked before installation when reflectance or thermal-emittance requirements apply.
| Factor | Is It a Good Fit? |
|---|---|
| Standing water | Yes, it handles ponding water well. |
| Heavy rain | Yes, as it provides strong resistance to prolonged moisture. |
| Older NYC buildings | Yes, it works well when the existing assembly is sound and properly prepared. |
| Poor drainage | Yes, this is a strong option when water tends to remain on the surface. |
| High reflectivity | Yes, because white formulations can provide strong solar reflectivity. |
| Dirt buildup | Needs attention. Dirt can reduce reflectivity over time, so maintenance is important. |
| Regular foot traffic | Use caution. The surface can become slippery when wet. Slip-resistant walk paths may be recommended. |
| Long-term moisture exposure | Yes. Well suited to areas exposed to frequent moisture and ponding. |
If your surface drains well and does not regularly hold standing water, acrylic can provide strong reflectivity at a lower initial cost. During the inspection, we evaluate drainage, substrate condition, moisture exposure, and existing materials before recommending the system that best fits the property.
Explore Acrylic Roof CoatingThe most common reason NYC property owners choose silicone is its strong resistance to ponding water. Unlike acrylic and other coatings, silicone can handle prolonged water exposure without breaking down as quickly.
Common on newer commercial and multi-family buildings across the city. These membrane roofs bond well with this material and gain years of added protection.
Widespread on older NYC apartment buildings and brownstones. It seals and waterproofs these surfaces even where drainage has always been a challenge.
Placeholder — flat, single-ply, and built-up roofs suited for silicone
We inspect the entire roof surface, identify ponding areas, review drainage paths, and look for defects that could compromise the finished system.
A restoration coating works best over a sound assembly. We identify wet insulation, trapped moisture, damaged membrane sections, and other conditions that require correction.
Visit Our HomepageDirt, loose material, biological growth, incompatible residue, and other contaminants can interfere with adhesion. Preparation is completed according to the selected product's technical requirements.
Seams, penetrations, flashings, transitions, cracks, and vulnerable areas receive the appropriate treatment before the field application.
The selected coating membrane is applied at the manufacturer's specified coverage rate and dry-film thickness. Some systems can be completed in one pass; others may require multiple passes or additional detailing.
We review coverage, detailing, drainage, and finishing conditions. Documentation and warranty requirements are completed according to the selected system.
New York City has specific rules for how reflective and low-slope surfaces should perform. For applicable assemblies, surfaces with a slope of 2:12 or less may need to meet one of two standards:
These requirements can vary based on the applicable code provisions and exceptions. A reflective surface can help reduce heat buildup and support a building's overall energy-efficiency strategy. However, it should not be treated as a standalone solution for Local Law 97 compliance.
Local Law 97 focuses on reducing greenhouse-gas emissions from covered buildings, which usually requires a broader plan that may include HVAC upgrades, insulation, controls, energy improvements, and other measures. For every project, we check the manufacturer's published performance data for the specific product being considered.
View Local Law 97 ResourcesA properly installed silicone coating can last 10–20 years, depending on application thickness, weather exposure, maintenance, and the condition of the underlying surface. With routine inspections and maintenance, it can provide long-term protection.
Yes. One of its biggest advantages is its ability to withstand prolonged ponding water. Unlike acrylic alternatives, it is less likely to deteriorate when water remains on the surface for extended periods.
Yes. Silicone surfaces can become slippery when exposed to rain or moisture. For buildings with regular foot traffic, we can incorporate designated walk paths with a slip-resistant finish to improve safety.
Pricing depends on surface condition, square footage, preparation requirements, access, repairs, and the selected application thickness. While this solution may have a higher upfront cost than acrylic alternatives, its durability and resistance to moisture can make it more economical over its service life. We provide a free, no-obligation estimate following an inspection.
Yes. It can bond to many existing substrates, including metal, modified bitumen, EPDM, TPO, and built-up assemblies. Proper cleaning, preparation, adhesion testing, and repairs are essential before application, and a full tear-off may not be necessary when the existing assembly is suitable.
Silicone generally offers stronger resistance to ponding water and prolonged moisture exposure, while acrylic is typically more affordable and provides excellent reflectivity. Acrylic performs best where drainage is reliable. The right choice depends on the existing substrate, drainage conditions, climate exposure, and long-term performance goals.
Get a Free Silicone Coating Estimate
Tell us about the property, its current condition, and the problems you are seeing. We will inspect the existing assembly, evaluate drainage and compatibility, and explain which solution would be more appropriate.
Get a Free Silicone Coating EstimateCall (917) 268-3699
This page is provided for general informational purposes only and does not constitute legal, engineering, architectural, or compliance advice. Silicone roof coating performance, lifespan, and cost can vary based on product formulation, substrate condition, surface preparation, application rate, weather exposure, and maintenance. Building owners should confirm project-specific requirements with the system manufacturer, a licensed professional, and the NYC Department of Buildings as applicable.
A roof coating is a system applied to an existing roof that has to be properly evaluated, prepared, repaired, and matched with the right coating technology.
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