At 05:32 PM 10/14/2009, Florian Speier wrote...
>Obviously I have to redo a few things, but I was wondering whether my
>assumption that primer sealer is weathertight was wrong, or if I did
>the

Most primer is porous. I hesitate to say "all," as there are some, like
epoxy, which aren't. A friend of mine once prepped his whole car,
primered it, and left it - planning to get it painted in a couple of
weeks. It was all rusted well before then. As I recall, he got so
discouraged, he ended up just using rattle cans. It didn't last a whole
lot longer.