XIM 400W NT100 is a urethane enhanced primer designed for excellent adhesion on difficult to paint surfaces. It is an ultra-premium solvent based primer / sealer / bonder developed to solve many painting problems. It provides excellent adhesion, sealing and bonding on a wide range of surfaces. 400W NT 100 White can be used for both indoor or outdoor applications and can be used with all topcoats. Helps prevent flaking, blistering, peeling. Ready to apply. No thinning required. Low VOC. Interior/Exterior use. For best results be sure the surface is clean and dry, free from dust, grease, wax, oil, loose paint, dirt and other surface contaminants.