I know that this will upset some, but for the home body man
there is nothing wrong with using fiberglass to repair rusted out areas.
If the effected area is cleaned good and treated with
something like Por 15, Chem prime, fiberglass will last a long time, most
probably ride u on out. Consider too the vehicle is not usually driven in the
rain and subject to salt. For larger areas you can use aluminum tape or even
duck tape as a backing to apply fiberglass to. I know that some will say that
fiberglass shrinks and is a no no. I have never had that issue. You can also use a couple of layers of fiberglass in rusted floors and
trunk areas.
Todays body filler is very effective and can be put on an inch
deep or more as long as you apply it in layers.
As I said this will generate a lot of comments, but not
everyone can afford a body shop to do everything. I know that there is a body
shop in your area that will spray a car for you if you have done all the prep
work. Harbor freight air tools are cheap. Your labor of love will be more
appreciated by you too.
This is just my $.02
Have fun,
Ollie