Post by lbbsI have some white latex primer, and was just wondering if I can add a bit of
latex brown primer (finish coat color) to give it a darker tint for the
primer. That way I will only need one finish coat.
btw: Can I use latex primer on top of either oil or latex surface? finish
coat is latex.
You can add in your primer. But if the two primers are from different
manufacturers then you are playing alchemy and you could ruin the performance
and holdout of your primer.
Latex, unlike oil base paints, is formulated diffferently from one
manufacturer to the next. It is a complicated finish system, and each line of
latex has its own finish recipe to make that paint work.
The way to color/tint latex prime is with the appropriate tints, usually made
by Huls, Creanova or DeGussa. These are the paste colorants which the paint
store measures and dispenses into the cans of paint (prior to them shaking or
mixin the cans). The colorants are added into the paint in meausements of
1/48 ounce increments.
Call the manufacturer and ask them what "type" of colorant you can add into
your primer, and how many ounces per gallon will be the maximum amount of
color you can add. If you add too much clorant than yu can ruin the strength
of the primer (which is as PhilCrow correctly stated in this thread meant to
be mostly binder, the coloring coming from your topcoat).
Primers which are tinted (have color added to them) are typically tinted to
only a percenatge of the final color.
Always follow the manufacturer's recommendations with latex paints. They are
printed out on technical sheets. If you have doubts or questions, call the
manufacturer's tech support and ask them. Never rely soley on the word of the
person behind a counter, especially if that paint outlet does not carry the
brand paint you are talking about.
There are guidelines with latex, and these can be generic. But each paint may
have brand-specific limitations because, as I said, the complex finish
chemistry which goes into formulating latexes vary from one recipe to the
next. And that same needed respect is needed with any waterbase or waterborne
material.
--
Daniel
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