Zinc Based primer usage

[250_money_pit]

I need to touch up the skeg on my Bravo3, as it has the typical minor scrapes and scratches just like anyone elses. In the past I've heard some advice given to apply a coat of zinc-based primer prior to sparaying on the paint. With just minor scrapes and scratches, would it be OK to just wet sand, clean, and then paint ? Or, at what degree of bare metal should it be necessary to apply a zinc based primer first ?

 

[Dave S]

Zinc Chromate Primer provides an extra measure of protection from elctrolysis corrosion. That's very important if you are wet slipped but not as important if you trailer your boat or use a lift.

Just the same, if you have bare metal......even if they are just scratches.........., then you should use a primer first if you expect your finish paint to hold up. Whether you use Zinc Chromate or just regular metal primer is up to you.

 

[RiverRat]

One thing to remember when painting... Paint will stick to paint or primer, it won't stick to bare metal. It's not designed to.

 

[250_money_pit]

Thanks all, Much appreciated.