Yes, but you should clean and lightly sand the gloss paint first, to give the new paint a good 'key' surface.
Cleaning can be done with a degreasing agent such as 'sugar soap', following the instructions thoroughly before applying the new paint.
Whenever you want to paint over a shiny surface such as gloss paint, you must first lightly sand the entire surface to make the paint stick. I didn't do that once and the paint looked great anyways...until it all started peeling off a week or so later. The best bet is to lightly sand, prime and then paint.
If satin paint is latex and the gloss you are painting is latex painting over is fine..but if one is oil paint and one is latex they will not stick on wall surface...check for type by doing simple test using rubbing alcohol and scrub a spot if there is residue left on the rag it most likely is latex...if nothing on the cloth most likely oil paint or alkyd paint
Yes. As with any prep, the old paint must be given a "tooth" for the new paint to grab. This is done by sanding or painting it with a special primer that will give it a "tooth". Either way it must be a clean, sound surface.
As always, in old homes, be careful around lead based paint.
yes
Matt/Flat paint makes a very good undercoat
no
Yes.
Yes. You can paint semi-gloss latex paint over flat latex paint. It is not advised to paint over any latex with any oil-based paint. Nor is it advised to try and paint over semi-gloss paint with any other finish without first de-glossing the finish and priming.
Yes, but you should scuff the gloss coat with sandpaper first, and you might need two coats to kill all the shine.
depending on the surface finish of the primer. Noirmally its matt in its appearance and will take a water based gloss. However, a primer should have an undercoat applied first unless its a primer/undercoat.
Can I paint semi gloss over flat paint? Thanks!Barbara Phillips
High gloss Exterior Oil-Based Gloss Enamel over Quality Primer will give the best results on a cornice.
yes.
yes
Yes, you can. You can always paint over with same paint.
Yes. We use oil primer on all our out door projects. Not sure why you would want to though. If I was going to put another coat on, why would it be clear? You should just put another coat of whatever color is up there now.
depending on the surface finish of the primer. Noirmally its matt in its appearance and will take a water based gloss. However, a primer should have an undercoat applied first unless its a primer/undercoat.
the high gloss acrylic would bead up and not give you an even application over the oil based