The Application Engineer contributes to Radiantâs sales team efforts (both pre and post-sale) by providing technical support in developing measurement solutions... 24 days ago - save job - more... -
It depends on the type of paint used in the existing painting. If it is an oil painting, you will need to use oil based paint. If it is a water based medium, like acrylic, use a water based paint. Gesso will work well for this. It is inexpensive, opaque and will help level the texture of the existing painting. You may want to lightly sand the painting before painting over.
Only a proper acrylic gesso should be used to prime canvas in preparation for painting with acrylic paints. However, acrylic paint can be applied to a raw canvas if so desired without any negative effect or chemical reaction (the case with oil paint).