The Valspar Prep Step Multi-Purpose Primer is a versatile primer designed for various porous surfaces, including drywall, wood, plaster, and masonry. It enhances the appearance of your topcoat by improving sheen differences and ensuring color uniformity. This primer is a heavy-duty stain blocker, effectively sealing out difficult, oily stains. It also adheres well to glossy surfaces, making it suitable for a wide range of applications. Ideal for both residential and commercial projects, it provides a solid foundation for your paint job. With its multi-purpose capabilities, this primer ensures a smooth and professional finish.