31:st-Jan-2017, 12:15:32
Can't find it now but there is something in the vauxhall workshop manuals about re-sealing the underside of the boot in astra J's where there is water ingress. I believe they raise the car off the floor and look underneath the rear of the car for faulty seals and redo when appropriate. I assume that if it's a known issue they would have to deal with it free of charge. Like I said though it is in the vauxhall workshop manuals somewhere.