On Fri, 15 Jul 2011 10:41:17 -0500, Steve Barker
wrote:

On 7/15/2011 7:39 AM, Ray wrote:
The base of the downspouts on our building are some kind of vinyl or
hard plastic -- I think it has a name of initials, like PCP or some such.

They are white, and I'd like to paint them brown to match the aluminum
downspouts.

Does this material paint all right? Would I need to use a primer, and if
so, what kind?

And what kind of paint?

ANY solvent based paint will stick better than latex. Clean it good
first by wiping it down with brake cleaner or acetone, then spray with
krylon or rustoleum rattle can.

Acetone can damage vinyl and any UV coating, even melt it. Something
milder is suggested. Sudsy ammonia diluted would work.