Hey Guys,

I'm having an some trouble with a fibreglass bathtub,
it has been corked [mastic] many times, but after a few weeks the water starts coming through where the mastic joins the bathtub and wall and leaking downstairs.

The leak mainly starts from where the two walls meet [but around the frame of the bathtub]

I have also put up some images

I think it might be cause the bathtub moves [the fibreglass bathtub is quite thin]
Does anyone know of some way of creatively / cost effectively fix the problem?

Any advice would be appreciated.