Paints & Coatings Resource Center

Ask the Expert Question-and-Answer Archive

by Ron Joseph

June, 2010

Q. How can I paint emulsion over a whitewashed ceiling surface?

A. You would first need to apply an alkaline-resistant blocking paint before applying an acrylic emulsion. Do not apply a paint that contains an alkyd resin, as alkyds are not alkaline resistant.

Your local paint stores should be avble to offer you an alkaline resistant blocker.


Ron Joseph

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