Hi Jimmy,
I am in a block with a similar water penetration problem. The unit above me has water leaking through bathroom ceiling into my unit. After several investigations by plumbers, it has been determined that the waterproofing has failed in the bathroom and needs to be replaced. In this situation, it is not the orignial flooring. The previous owners completely gutted the bathroom, repositioned the shower, vanity and toilet, which meant additional piping to connect shower, toilet etc up to the orignal common property piping. The current owner wants to know who is responsible for paying to repair the waterproofing membrane and associated costs with removing her flooring etc? I had looked at recent documents from fair trading saying it is the o/c, however, as this unit has been renovated and changed is it still their responsibility and not instead the owners. I hope this makes sense. Hoping you can help me out with answer or point me in the direction of finding the answer.
Cheers