Adhesion to UPVC Shower Cubicle Lining

lonewheeler

Cracks have appeared in the UPVC lining of the shower cubicle in my caravan. This is where the lining bends at a 150mm radius at the two rear corners. All flat side sections are sound. I am considering just replacing the bended sections by plating over the
original with new UPVC sheet floor to ceiling. I have seen plastic trims made for joining plastic sheet wall panel in commercial kitchens. These will have to be bonded to the existing shower UPVC walls. Does any one know off a suitable glue or bonding agent
that could be used. It would need to be strong to overcome the forces of holding bent UPVC sheet. I am not sure what plastic the trims are made from.