Re: Updating Interior Paint from DARK Red to LIGHT Grey
You must use a stain blocking primer first, or all that red/dark color is going to bleed through whatever top coat you use. There are three choices, Zinsser Bull's Eye 123 (blue label ), Kilz (original, not Kilz 2 ), or Zinsser BIN (red label ). Bull's Eye is good for covering lighter colors and adequate for darker when multiple coats are applied, cleans up with water. Kilz has a higher pigmentation content, so it covers a tad bit better for more stubborn stains and color blocking, cleans up with paint thinner. BIN is a shellac, which is excellent for high hide requirements and odor blocking, cleans up with alcohol. Be sure to read the labels of these products for proper clean-up procedures, they are not all the same in this respect.
Once you're happy with your prime coat coverage and the primer has fully cured, follow up with your paint/color of choice. It will not be necessary at this point to use a paint-N-primer combo product, paint alone will suffice.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!