Mate, i know its not what you really want to hear, but i really would ask on here or similar for someone to come out and weld a partch in there and on your roof. otherwise you will be fixing them agian in 6 months and the rot will just be worst...
i'm going to have a quick ring round some welders in the morning but to be honest i don't think anybodys going to be able to do it at such short notice. Plus i can't really afford to pay somebody to do it either.
That hole in the roof has been there since i've had the car and its been kept really dry. There was no sign of moisture getting in at all from the outside. I think the roof i'll definatly have to leave it be and just repair it as best i can.
The lip on the window i wouldn't mind having a crack at welding it but i barely know how to weld and haven't got time to practice.
The rust on the parcel shelf and underneath inside the boot is too far gone to treat, it will need welding at some point but it'll have to be done in the future after the respray.
Right now i think my only choice is to bodge it until i'm a decent welder and feel confident enough to weld it myself.
So i'm going to use fibreglass but which will be stronger:
Pure fibreglass built up to form a lip
or
Should i cut a piece of metal to shape to fill the gap, then fibreglass that into place then add fibreglass over the top?
Also - midridge2: Wind your neck in, nobody asked for your opinion of his welds.