If you're after a finish that looks like stucco, or if you want an effective cover-up for flawed surfaces, textured-surface paint will do the job. Some varieties come premixed with sandlike particles suspended in the paint. Because of their grittiness, these paints are usually used on ceilings. With other varieties, you have to add the particles and stir thoroughly. Another form of textured paint has no granules. Thick and smooth, it's applied to the surface and then textured with special tools.
Textured paints are available in either flat-finish latex or alkyd formulations. Latex versions are frequently used on bare drywall ceilings because they can be used without a primer and they help to camouflage the seams between sheets of drywall.
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One of the problems with textured paint becomes evident when the time comes to paint over it. All those peaks and valleys created by the texturing actually increase the surface area of the wall. The rough surface will require 15 to 25 percent more paint the second time around.