What approach works best with façade issues: Band-Aid repairs or full-blown replacement? Depends on each building, and 245 West 99th St, a 34-story condominium, faced this issue when inspection of 17,000 rainscreen tiles revealed cracks that could cause tiles to fall, water leaks or other failures. Eric Vonderhyde, a principal at Bertolini Architectural Works, shares what the condo board considered when faced with repair or replacement options. Habitat’s Paula Chin conducts the interview.