What Lies Beneath Uncovering Hidden Structural Damage in NYC’s Historic Buildings 

When Mayta + Sebastian Architecture was hired for a routine FISP (Façade Inspection Safety Program) review, we expected to find localized masonry deterioration—common in aging NYC facades. Our initial assessment identified areas of concern at the building’s corners and water table, where prolonged exposure to the elements had taken its toll.

However, once demolition of the outer face brick began, a far more serious structural issue emerged. Years of water infiltration through damaged masonry had led to extensive corrosion and delamination of the underlying steel structure—a dangerous condition that had remained hidden behind the façade.

🚨 Why Does This Happen?
🔹 Water Infiltration: Cracked masonry allows moisture to seep in, corroding embedded steel.
🔹 Hidden Structural Decay: Damage progresses unseen until it compromises load-bearing capacity.
🔹 Delayed Repairs = Bigger Problems: What begins as localized deterioration can escalate into major structural hazards.
💡 Our Response:
Our team quickly mobilized, designing reinforcement solutions to stabilize the damaged steel while keeping repairs on schedule. We remain on-site, closely monitoring structural members as the restoration continues, ensuring timely interventions that prevent further escalation.

✅ Key Takeaway for Building Owners & Property Managers:
A routine FISP inspection can reveal early warning signs, but unseen structural damage can lurk behind aging facades. Proactive investigation and expert-led repair strategies are essential to preserving safety and preventing costly emergencies.

📩 Have a building due for a FISP review? Let’s ensure it stands strong for decades to come.

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