Hi John,
Yes the Park Royal programme initially was to re skin the coaches. But after stripping back one coach, the ' powers that be ' decided that the work would be too costly and time consuming. So they decided to fit the new steel panels over the existing old panels, much to the astonishment of the staff, especially the older generation coachbuilders. The original vestibule ends porthole windows or side lights as we called them , were done away with, and the replacement was just a steel panel with no window. All the new panels both outside, and the timber panels on the inside were pop- riveted on. Pop rivets or blind rivets as they are known , were the order of the day. The Park Royal programme was not one of the carriage shops finest moments, but these were the cash strapped days of C.I.E.
Also John ,
Apart from the Park Royals, i really don't recall seeing asbestos on the other types of coaches that i had worked on, and I worked on a lot of heavy repair / crash / casualty jobs over the years. I do remember fitting sheets of black or brown ? asbestos in the new half heating van / half passenger conversions that C.I.E were doing in mid / late 70's. The whole new framework and access doors to the new boiler section , had fibreglass insulation/ sound proof, then asbestos sheeting which was then all sheeted out with steel paneling, which was all screwed into place. Interesting times in Inchicore during the ' poverty' era...