Promac Pro Damp Seal Plaster Primer is a multi-purpose solvent-based primer and sealer designed to prepare and protect masonry surfaces exposed to moisture. It penetrates into plaster, concrete, and brick surfaces to create a stable base while helping to control the effects of damp conditions.
 
Formulated with an alkali-resistant modified acrylic system, it provides strong adhesion and protects paint systems from common issues such as efflorescence and surface degradation.
 
This primer is specifically designed for use on sound but moisture-prone surfaces, making it ideal for areas where standard primers may struggle. It acts as both a sealer and primer, ensuring better topcoat performance and longer-lasting results.