Promac Plaster Primer (Solvent-Based) is a deep-penetrating alkali-resistant primer designed to prepare plaster and masonry surfaces for painting. It works by soaking into porous substrates, binding loose particles and creating a stable base that ensures optimum adhesion of topcoats.
 
Formulated for both interior and exterior use, this primer provides protection against alkali and efflorescence, helping to prevent common paint failures such as peeling, flaking, and surface staining.
 
Its solvent-based formulation allows for superior penetration and binding strength, making it ideal for new plaster, cement, gypsum, and previously painted surfaces where durability and performance are critical.