Finngard Silicone Primer is a water-based, silicone-based primer (sealant) designed to enhance surface coverage in aggregate surfaces. This primer serves as a crucial preparatory step by binding porous and water-absorbing substrates before painting. By improving adhesion, Finngard Silicone Primer ensures a more effective and durable finish when applied to various surfaces. Its water-based formulation adds to its versatility and ease of application.