The balcony was inspected by engineers, who carried out major remedial to our building, and they deemed that the repairs requested were of a cosmetic nature and there was no problem with the waterproofing unlike other balconies that were refurbished.
There’s your answer, you’ve had them inspected by the appropriate professional and their opinion forms part of the OC record. Of course you’ve taken before and after photographs properly dated to put into the OC records? These, along with the engineers report(s) will demonstrate that you’ve acted correctly.
It might also be time to start taking annual photographs of all balconies so that if damage and/or excessive wear and tear occurs you can determine when and maybe even how it occurred.
Done with the normal inspection and report of the status of all common property. It will also demonstrate to owners that the committee is monitoring common property and will ensure maintenance is carried out in a timely manner.