EnerSeal is a full-service mechanical insulation and firestopping contractor serving New York City. We specialize in fiberglass pipe insulation, water line insulation, duct wrap systems, high-temperature applications, Fyrewrap assemblies, and ArmaFlex installations — delivering energy efficiency and long-term system protection across commercial and residential properties.

Beyond insulation, our team provides comprehensive firestopping services designed to meet and exceed industry standards. We install fire-resistant sealing systems, fire barrier assemblies, and complete passive fire protection solutions that preserve the integrity of fire-rated walls, floors, and ceilings. All work is performed in compliance with NFPA codes, UL system requirements, and NYC building regulations.

Firestopping is not optional — it’s essential for maintaining proper compartmentation and limiting the spread of flames, smoke, and toxic gases. With EnerSeal, your building’s mechanical systems and life-safety infrastructure are protected by a single, experienced trade partner.