Yes.
Clean if well. Use a wire wheel to rub off any rusty loose paint.
Go to a paint store (not a big box). MAB makes a primer called SuperBond. It will bond to the finish. Paint the are with the primer. You now have a surface that will take any kind of paint.
As long as they are the same base, yes.
If you want to call an equal amount of semi-gloss and additive then yes. Paint starts out as a gloss and is made flat by adding cheaper pigments and flatteners to the mix so that the paint doesn't have as high as a sheen. There's nothing that will remove or offset those flatteners other than adding higher gloss paint to the existing paint.
Add Flat Paint to the Semi Gloss (SG). As a general rule, using commercial "production" grade paint. If you want "Satin" and have SG. you could add 1/3 of a Gal flat, tinted to the same color. If you want SG and have full Gloss Paint, Add 1/3 of a Gal Flat, tinted the same color. The reverse is N O T true. If you want full gloss and have Flat, it won't work in my experience. Experiment on your own. Just remember its easier to tone down gloss than to add it. This is assuming the paint is still liquid. If it is already on the walls, and you want to avoid repainting. A "Matte" finish Clear Coat could be sprayed over the whole wall, But to do it "right" you would want to repaint
I don't think they can sell it on it's own, but if you take your paint can into Home Depot they can do it for you . -I've had it done in my local HD.
Many other companies make a a comparable paint. Ask for there top or second line of high gloss acrylic and you should be satisfied.
The only way to make a paint colour lighter is to add white paint to it. The amount will depend on how dark the starting paint colour is, how pale you want to make it. But usually it make a lot of white paint to noticeably lighten up a paint colour.
If you want to call an equal amount of semi-gloss and additive then yes. Paint starts out as a gloss and is made flat by adding cheaper pigments and flatteners to the mix so that the paint doesn't have as high as a sheen. There's nothing that will remove or offset those flatteners other than adding higher gloss paint to the existing paint.
sorry to be the barrier of bad news, but the only way is to but a semi gloss paint. or try playing around with different glazes.
Your best bet is to phone your local Home Depot or Lowes, and ask someone who works in the Paint Department!
Doesn't the amount of varnish in the paint make the difference?
yes you can by using chrome polish but if you use on a car it wont come out good i only used it on my bike it was matte and now it is high gloss
You can make it flatter, but not totally flat by adding a bit of talcum powder. Very common technique in modelmaking.
Add Flat Paint to the Semi Gloss (SG). As a general rule, using commercial "production" grade paint. If you want "Satin" and have SG. you could add 1/3 of a Gal flat, tinted to the same color. If you want SG and have full Gloss Paint, Add 1/3 of a Gal Flat, tinted the same color. The reverse is N O T true. If you want full gloss and have Flat, it won't work in my experience. Experiment on your own. Just remember its easier to tone down gloss than to add it. This is assuming the paint is still liquid. If it is already on the walls, and you want to avoid repainting. A "Matte" finish Clear Coat could be sprayed over the whole wall, But to do it "right" you would want to repaint
Because lip gloss contains fats, and fats make beer go flat.
If you have the required satin or semi-gloss base product and pigment, you can.
I don't think they can sell it on it's own, but if you take your paint can into Home Depot they can do it for you . -I've had it done in my local HD.
Many other companies make a a comparable paint. Ask for there top or second line of high gloss acrylic and you should be satisfied.
Well I learned from experience NOT to use house paint, I would say Acrylic paint or spray paint. Make sure to use gloss!