Originally Posted by shane
thats being sorted as part of the restoration...i was gona have a new skin put in but i was told it wasnt worht it as the rust was easily cut out and replaced...its strange cus only this one side of the sunroof(pic above) went the otherside aint too bad...god knows!
While the sunroof is out, get a torch and peer into the Sunroof cavity. Normally the rear corners are badly rotten, this cannot be seen externally. I cannot see any easy way to rectify this. The rust bubbles on the roof tend to start on the drivers side just behind the sunroof.
It is caused by the sunroof drains blocking. The only way to stop it is to back-blow the drains and waxoyl in the sunroof cavity, but that only works on a 100% rust-free roof and I bet there aren't many of those around.
I would hate to see anyone resto a car, then find the roof bubbles, that's why its worth a look before you take it on. My shell is in VERY good condition from a corrosion point-of-view, but the roof has started to go, so that goes to show that overall condition is no guide as to what the roof will be like.