Floor patches / fasteners with dissimilar metals
I've been reading a bunch about this but wasn't sure if there's been a consensus – just how bad is it if I'm using aluminum materials to patch my steel floor? Specifically:
1. The screws that kept the plywood on also attached the floor to the frame. To replace them, can I use aluminum rivets (possibly with a bead of silicone caulking)?
2. If I wanted to make some small patches, could I repurpose the aluminum side panels I yanked off during demo? Thinking about 2" x 2" glued with silicone.
3. I've read the penny/epoxy method is disputed because of this / galvanic corrosion in general. What do you think?
For context, I'm thinking of what condition the bus might be in 5 years from now. How quickly will these things become a problem?