Cabot Problem-Solver Primer provides maximum performance through a faster-drying and higher-hiding formulation. An ideal exterior base coat for all types of solid stains and paints, it provides superior resistance to extractive bleeding and moisture problems. The 100 percent alkyd, oil-based formula dries in a fraction of the time compared to traditional linseed oil-based primers and both formulas facilitate the application of a quality finish coat within just a few hours.