I m not sure but i do know you need to make sure what ever you use must be food grade safe.
Can you polyurethane granite countertops.
Oil based polyurethane for countertops.
I m assuming counter tops in the your kitchen but of course thats not much of a issue on counter tops in the bathroom.
Polyurethane seals refurbished or new countertops protecting the surface from water and stain penetration.
Choose a satin or glossy polyurethane to give the kitchen laminate countertops a high end look and feel.
Polyurethane varnish is one of the best finishes for a countertop it s durable and when applied properly can be just as subtle as lacquer.
Check out this post.
Is using polyurethane safe to use to seal counter tops.
Some manufacturers create specialty finishes that mimic marble or granite countertops such as stone coat and leggari.
You can also add epoxy to almost any surface helping to add shine to worn laminate or formica countertops.
Polyurethane forms a layer of clear protection guarding the fragile painted surface against surface scratches while restoring the shine.
Since it is very durable polyurethane varnish stands as one of the best finishes for a countertop mainly because it can be as subtle as lacquer.
Thanks so much for stopping by.
Actually i think you could paint over any unattractive countertops and make them fit your taste.
You can choose between coatings designed for furniture or for use as durable floor finishes.
Paint three coats of polyurethane on the kitchen countertops to seal the surfaces.
Clean with tsp wipe up with windex sand with 60 grit.
There are also industrial urethanes and two component industrial polyurea.
So yes you can paint over granite countertops and make them a thing of beauty.
Of course we also like the look of a clear epoxy coating over a nice hardwood countertop.
Countertops refinished with paint do not wear well and will scratch easily.