Can I paint over Minwax polycrylic
 

Can I paint over minwax polycrylic with spray paint? Do I need a primer or can I just go over it with spray enamel?

I would almost recommend not doing it. It might be just fine seing as how spray oil enamel will stick to just about anything, but you are making a transition from a latex/water based fiish to an oil base.

Clean, dry and dull.

i would sand a little, prime with S-W PrepRite Bonding Primer and stick with acrylic. after all, they are phasing out alkyd paints. in many states you can only get alkyds for corrosion resistance.

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Do they make acrylic or latex spray paint? All the ones I see at Lowes or Home Depot are oil based spray paints.

they do make acrylic spray paints. spray paint is exempt from most VOC regulations.

Polycrilic is a waterbourne product, you never want to use an oil product over a waterbourne, it causes a lot of problems, but it is ok to use a waterbourne pruct over oil. You should sand the surface first(lightly), clean the surface, prime the surface with a waterbourne product(100% acrylic), then apply your top coat using a waterbourne product, some waterbourne products are not 100% acrylic. Visit us on the web to read about the benefits of 100% acrylics