Tenmat Intumescent Fireblocking Specified for NYC ACM Cladding Project
Tenmat Intumescent Fireblocking has been selected for the New Providence building at 225 East 45th Street in New York City, a 21-story structure originally a 7-story shelter. The building now houses 131 affordable/supportive housing units, 170 shelter beds, and an upgraded primary care clinic. The project uses an ACM and brick cladding system, triggering Section 718.2.6 of the 2022 NYC Building Code for architectural trim. Tenmat's intumescent fireblocking, approved by NYC OTCR/DOB, allows a maximum 2-inch air gap in the facade assembly, maintaining air circulation and moisture management under normal conditions while expanding to seal cavities in a fire. The cladding system passed NFPA 285 testing with the fireblocking installed, ensuring full compliance. Tenmat has tested its fireblocking with various cladding materials including ACM and HPL, and offers free AIA and ICC approved courses. The company will present this topic at the CE|Strong NorthEast Workshop on September 9, 2026.
Key facts
- New Providence building at 225 East 45th Street is 21 stories tall.
- The building includes 131 affordable/supportive housing units, 170 shelter beds, and a primary care clinic.
- The facade uses ACM and brick cladding, triggering NYC Building Code Section 718.2.6.
- Tenmat Intumescent Fireblocking is NYC OTCR/DOB approved.
- The fireblocking allows a 2-inch air gap for ventilation and moisture management.
- In fire conditions, the intumescent material expands to seal the cavity.
- The cladding system passed NFPA 285 testing with Tenmat fireblocking.
- Tenmat offers free AIA/ICC courses and will present at CE|Strong NorthEast Workshop on September 9, 2026.
Entities
Institutions
- Tenmat USA
- New York City Department of Buildings (DOB)
- NYC OTCR
- CE|Strong NorthEast
Locations
- New York City
- 225 East 45th Street
- New York