Montgomery County Coroner Walter Hofman says Kevin Sensenig had climbed on to the roof to show three workers what needed to be done when a roof collapsed Monday morning at The Hill School in Pottstown.
Sensenig was the vice president of R.L. Sensenig Co. of Ephrata. Hofman told the Reading Eagle newspaper Sensenig was the only worker not wearing a safety harness.
A second worker was trapped for more than an hour before emergency workers freed him. Hofman says his injuries don't appear to be life-threatening.
Officials from the Occupational Safety and Health Administration are investigating.
Information from: Reading Eagle, http://www.readingeagle.com/