Promac Universal Undercoat is a solvent-based, high-quality intermediate coating designed to improve adhesion and bonding between layers in a paint system. It is applied between the primer and topcoat, ensuring compatibility between coatings—especially when combining water-based and solvent-based products.
 
This undercoat enhances the overall performance of the system by improving hiding power and coverage, while also providing a smooth, sandable surface for a superior final finish.
 
Suitable for both interior and exterior use, it can be applied over a wide range of primed or previously painted surfaces. It also helps fill minor imperfections and builds film thickness, contributing to a more professional and durable end result.