Currently doing some builders cleans on some large factory unit.
There has been some gaffer tape on the metal cladding which has a plastic coating and the gaffer tape has been removed but the glue with string is left behind.
We have tried allsorts to get this stuff of.
MDR, oilflow, Traffic film remover, Toilet cleaner, solvent UPVC cleaner, WD40 but nothing will shift it.
We can't scrape it due to plastic coating on the cladding.
Anyone have any ideas,
We had it on the window frames also but we got that off with solvent upvc cleaner.