![Advice needed, keep sanding through the rust that's under the primer or epoxy primer over it? Worth the time? Factory paint on 2007 GMC Sierra roof. Thanks! : r/Autobody Advice needed, keep sanding through the rust that's under the primer or epoxy primer over it? Worth the time? Factory paint on 2007 GMC Sierra roof. Thanks! : r/Autobody](https://i.redd.it/x01wlij4ou991.jpg)
Advice needed, keep sanding through the rust that's under the primer or epoxy primer over it? Worth the time? Factory paint on 2007 GMC Sierra roof. Thanks! : r/Autobody
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Amazon.com: Custom Shop - Gray Epoxy Primer/Sealer 2.1 VOC (Gallon Kit) Anti-Corrosive DTM High-Performance Primer for Automotive and Industrial use Kit = 2 Qt. Epoxy Primer + 2 Qt. Epoxy Hardener (1-1 Mix) : Automotive
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