Using epoxy primer as sealer

[fperez]

Hi everyone, I have a couple questions on using epoxy primer as sealer, will the reduced epoxy adhere well to 500 dry grit finish on 2k primer, I also plan to spray the reduced epoxy and then come back the next day and if all is well spray my bc/cc, will “reduced” epoxy primer need sanding if spraying 24hrs later, if ok to spray without sanding can you use a final wipe cleaner before tach cloth and painting.
Thank you all.

 

[dhutton01]

Hi everyone, I have a couple questions on using epoxy primer as sealer, will the reduced epoxy adhere well to 500 dry grit finish on 2k primer, I also plan to spray the reduced epoxy and then come back the next day and if all is well spray my bc/cc, will “reduced” epoxy primer need sanding if spraying 24hrs later, if ok to spray without sanding can you use a final wipe cleaner before tach cloth and painting.
Thank you all.

24 hours is stretching it. I reduce 25% if the sealer will sit overnight. I spray sealer late afternoon and base first thing the next morning. If you let it sit too long you will lose the chemical adhesion.

Don

 

[Jim C]

i agree, no need to wait that long. spray it like its your first coat of base. most times, if reduced well i just let it flash dull, 15-20 min then start spraying base.

 

[fperez]

Thank you both, I guess reducing it changes everything, reduced 25% do you guys normally spray just one medium coat?

 

[Jim C]

1 coat only. More than that and you need to let it sit longer before you base it. Only one piss thin coat is needed

 

[dhutton01]

I use a 50% reduction if I am spraying base same day within a couple of hours. 25% if spraying next morning.

Don