Yes, but the finish will be somewhere around satin. You can only do this if the paints are of the same type, i.e. either both latex, or both enamel (alkyd). Make sure you mix them together very well, and continue to agitate while you're painting.
Post edit: They may mix and go on alright, but interior and exterior paints are, however, formulated to have different properties. Exterior paint actually may not hold up as well indoors (Bob Vila). Most importantly, though, chemicals used in exterior paints outgas and are harmful for indoor use. Try some of the new low-VOC interior paints. They are much better for your health.
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.
Base paint is also known as flat paint, or flat wall paint, or matt paint and is a latex paint. Flat paint is just that, flat or dull with no sheen at all. Semi-gloss is an enamel that dries very hard and can be found in a low sheen (satin) a medium sheen (semi-gloss) and a high sheen (high gloss) Flat paint is usually used on walls and ceilings where as semi-gloss is used in kitchens, bathrooms, doors an jambs because it helps hold back the inherent moisture in those areas.
Many hotels that use paint use satin or semi-gloss latex paint in their interior applications.
No, you can dull satin or semi-gloss but not the reverse.
Yes, you can generally paint high gloss latex over flat latex paint. But you must do all the preparation work in the best tradition of any professional painter. All "flaking" must be removed and the raw wood primed. This will present a "smooth" surface for the new coating. Additionally, everything that is to be painted my be scrupulously clean and free of anything that will restrict the new latex from sticking to the old.
Yes, it will.
You can make it flatter, but not totally flat by adding a bit of talcum powder. Very common technique in modelmaking.
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.
Base paint is also known as flat paint, or flat wall paint, or matt paint and is a latex paint. Flat paint is just that, flat or dull with no sheen at all. Semi-gloss is an enamel that dries very hard and can be found in a low sheen (satin) a medium sheen (semi-gloss) and a high sheen (high gloss) Flat paint is usually used on walls and ceilings where as semi-gloss is used in kitchens, bathrooms, doors an jambs because it helps hold back the inherent moisture in those areas.
I've done it without any ill effects. It just dulls the semi-gloss a little.
semi gloss
Many hotels that use paint use satin or semi-gloss latex paint in their interior applications.
Sears Ultra Latex Interior Semi-Gloss Paint is a high quality paint for all interior surfaces, but is particularly useful on wood trim, or kitchen and bath areas where stain and milder resistance is important and you need a surface that is easy to wash without damaging the surface. It is guaranteed to cover in one coat and comes with a limited lifetime warranty.
Can I paint semi gloss over flat paint? Thanks!Barbara Phillips
I use semi-gloss latex.
No, you can dull satin or semi-gloss but not the reverse.
The different paint finishes available for interior walls are flat, eggshell, satin, semi-gloss, and high-gloss. Each finish has its own level of sheen and durability, with flat being the least shiny and high-gloss being the most reflective.