Step-By-Step – Back to BasicsWhy Use Epoxy? Epoxy is used first as it has excellent adhesion and corrosion resistance. The epoxy blankets the metal, which does not allow any oxygen to reach the metal. Epoxy also adheres (sticks) good to the metal or other substrate and top coats adhere good to the epoxy. Therefore, epoxy is a good choice to use on repair areas where there is exposed metal or body filler.
What Epoxy Is Not: Epoxy does not have high build or fill imperfections well. Therefore, epoxy is not designed to be applied and block sanded. If there are still scratches or areas where body filler was applied, you really need to apply primer surfacer on top of the epoxy primer.
1. Wipe the repair area clean with wax and grease remover.
2. Clean with tack cloth.
3. Mix Epoxy Primer – Remember that you may need to wait an induction time before using. Read your tech sheet for the product.
4. Spray 1 – 2 coats onto repair area.
5. Allow To Flash (dry) for 15 minutes between coats, longer for cooler weather.
6. Allow to flash for 30 minutes before spraying primer surfacer, again, check the tech sheet.
7. Clean Primer Gun and Mix 2K Primer Surfacer.
Now the repair area has epoxy primer applied, now you’re ready to mix and apply primer surfacer. Note: You do not sand epoxy primer before applying primer surfacer. However, usually, primer surfacer must be applied within a certain time, check your products tech sheet.