When your paint priming needs call for a superior adhesion, and a stain blocking formula to seal surfaces, choose McCormick’s uniX Multi-Purpose & Stain Blocking Primer. It is specially formulated for interior and exterior residential, commercial, and industrial applications with its unique cross-linking, 100% acrylic formula. uniX can be used on bare or previously painted drywall, cured plaster, masonry, hardboard, vinyl, PVC, ceramic tile, wood, ferrous and non-ferrous metals, windows, cabinetry, and trim.