Interior Mineral Primer is designed for new drywall and other interior masonry surfaces where a healthy mineral paint system is desired. A sol-silicate mineral primer, it is fast-drying and formulated to seal new, uncoated drywall and masonry surfaces and reduce the number of topcoats required to achieve a uniform, professional-quality finish. Over previously painted surfaces, a mineral “bridge” layer between old paints and new mineral finishes, including limewash, is created.