T Cut Or not T Cut

I have a 2002 Ravenna! I'm suffering with bloom on one side! I have read on a Forum that T Cut should not be used on GRP! is this fact or fiction? and if it's a fact! what should I use as an alternative?.  

Don't use T Cut, try Silki available from most caravan dealers or a product from one of the specialist manufacturers made for that purpose.  Boat chandlers can also supply products (hull cleaners)

Good advice from roli there but T cut actually do a cleaner for fibre glass it comes in a white bottle rather than the red for the ordinary stuff.

Removing the bloom is not the important bit, I too would use a marine product but almost anything slightly abrasive used carefully will bring back the shine. The important difference is what you protect GRP with and that has to be something formulated to seal and adhere to GRP not 'car polish' which is designed to adhere to paint.

If you do not do that the bloom will immediately start to come back.

Meguiars is I believe about as good as it gets!

Have a look at Meguiars heavy duty oxidisation remover, should do the trick nicely!