1 part epoxy primer and more primer..

We are quite limited to what we can buy here in Canada so I am looking a Nason. In the TDS is says 2 coats are better than one sprayed at an interval within 30 to 60 minutes based on temps..

Depending on the brand of epoxy primer you put on the bottom. Some epoxy primers need to be reapplied if they are not covered by a filler primer in a couple day window.