mixing paint

Old 07-26-02, 10:28 PM
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mixing paint

Will mixing two paints having similar colors always produce the expected result?

This may sound like a dumb question, but my unsuccessful history of matching colors at Sears makes me nervous. Some of the results probably would require a chemist to explain.

Last year I tried to match at Sears the exterior, Miller paint color used on the house I bought. The computer came up with a dull color that didn't seem right. The kid working there took several iterations and came up with a color that had a slight greenish tint to it that came close and seemed prettier to me, and I bought four gallons to cover the whole house. We didn't notice until later that the newly painted parts were a lot greener than the original color. The original was a bluish gray, and what I painted last year was turquoise and less desirable. I painted half the house.

When I opened the cans this year, I couldn't believe the paint inside matched the house's original paint color exactly. Considering this a second chance, I painted over most of what I painted last year. The last time I opened the can, though, the paint was slightly darker than it had been a week earlier. A new Sears, latex, Weatherbeater sale at the right time sent me back to the store to match colors for two more gallons. I was helped by the smartest employee I met there yet, and he could tell the color he made was too light. It looked good to me, and I am wary of tinting efforts, so I bought it, and it was too light. It's not bad, though. Last year's paint and this year's paint were made from different color bases (last year's formula had a lot of white, and this year's was made with black). The colors currently aren't much different. Would mixing one gallon of old with one gallon of new guarantee the result will be in between? Could my painting so far this year turn greener over time?
Old 07-26-02, 11:54 PM
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it sounds to late to say this but if your gonna paint your house..paint the whole thing.the paint will all match and a fresh coat of paint cant hurt.as far as the paint getting greener.paint will always lighten when exsposed to the sun.
Old 07-28-02, 08:17 PM
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Thanks. I decided not to mix anything and try to use up what I have. If the year old paint gets greener again, I can paint over it again next year with some different paint.

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