spray paint on epoxy

[TiggerToo]

Is it possible to spray paint (e.g. bog standard "automotive") directly on epoxy, or should I use a primer first? If so, which one?

 

[geem]

I guess it depends what you mean by bog standard. Automotive paints have changed over the years, but I think most paint will go on to epoxy.

 

[Deleted member 36384]

In my experience yes, it is. I have epoxy coated steel (screw jack bodies, unknown epoxy type) spray painted black and the paint has adhered well. I have also spray painted 'epoxy' FRP side panels on motocross bikes with spray paint from Halfords, the paint is still there and the side panels have not self destructed!

 

[oldsaltoz]

If this raw new epoxy, the common practice is to abrade it with a grit not more than 200 then apply an epoxy primer, as a primer that primes the epoxy ready for painting.

Some others report adding the primer when the epoxy is still tacky with mixed results.

Good luck and fair winds.

 

[fishermantwo]

If the epoxy is new I would be inclined to scrub it with soapy water before painting.

 

[rob2]

Although the OP is looking to paint over epoxy, I was wondering about older techniques. My boat has a colour stripe painted over the GRP (presumably polyester resin). I suppose that this would have been painted on with celulose paint, as it would have been readily available and quick to use. I have hand painted the cove line with white acrylic paint, but wonder whether it would be successful; should I wish to refurbish the blue stripe. Any comments?

Rob.