Stop in for a cup of coffee

Question: best primer to use for the short term after floor patching? Expoxy ? Urethane based? I just want it to seal out moisture for now and be able to spray with a high build for sanding later on

@GeorgeH @halifaxhops @ anyone else?
This is what I use on all of my paint jobs. Really....
Stops Rust Rust Brushedpaint Rusty Metal Primer 7769502 | Zoro.com
I thin it and spray it on. I just cant see spending as much on primer as I do on the top coat. Several cars, no problem.:thumbsup: