The fibrous plaster association only recommends a pigmented oil based prepcoat which seals porous surfaces and binds unpainted powdery surfaces such as bare plaster, providing a sound foundation on which to apply a subsequent paint coats.
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The fibrous plaster association only recommends a pigmented oil based prepcoat which seals porous surfaces and binds unpainted powdery surfaces such as bare plaster, providing a sound foundation on which to apply a subsequent paint coats.