Paul A. Glatz was doing installation work at the Academy of the Holy Angels in Demarest when he was struck, they said.
His body was found just before noon Wednesday morning, about 24 hours after he arrived at the school, Demarest Police Chief James Powderly III said.
School officials quickly sent a robo-message to parents and assembled students and staff for a briefing, the chief said. Counselors were made available, as well.
The Bergen County Medical Examiner was conducting an autopsy to determine the cause of death.
A computer programmer for four decades, Glatz enjoyed old radios and cars, as well as community service, his sister told Nj.com.
He leaves a wife, Lauretta Petriello Glatz, and a son.
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