handyandy

Once you take on the job of water proofing then you will have to cover the material used to achieve the waterproofing.

The majority of waterproofing materials for a  membrane that need to be covered to ensure longevity of the product. They are generally tiled over thus it tend to be a mute subject as the tiling should naturally follow.

There are waterproofing materials that get adsorb into the concrete but these will potentially not seal cracks or crazing and would also need to be reapplied frequently as they will not wear well.

As all balconies should be treated in the same manner as they would have been built with the same fault a whole of OC attitude could be adopted with all balconies to be upgraded. As such it will be each owner who ends up paying for their own balcony.