Best way to treat the rust on my roof?

timk225 said

For an epoxy primer, do you have to specify an acid etching primer or are all epoxy primers like that?

To neutralize any rust removers, just use water, or water / baking soda or anything else?

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Acid etch primer and epoxy primer are not the same animals.
SPI tech says to NOT sprat their epoxy primer OVER self etch primer>
Best to always read the products tech sheet!

I neurtalize Ospho with water. Apply the neutralizing coat, let sit maybe 4-5 minutes BUT NOT dry, wash good with water, some soap probably does not hurt. There are lots of treads on this subject here, search. Blow dry with air, wipe, so as to not flash rust.