Parex's 121 Optimum Premium Basecoat and Adhesive features an advanced formulation that offers exceptional bonding strength, and enhances resistance to cracking and impact, providing added protection for the building envelope. This versatile product is compatible with a wide range of insulation boards and finish coats, allowing for flexibility and customization in exterior finishing systems. Additionally, Parex's 121 Optimum Premium Basecoat and Adhesive is formulated to minimize shrinkage and expansion, contributing to long-term structural integrity, reducing the risk of damage over time. Coverage as an adhesive is up to 140 sq. ft. and up to 95 sq. ft. as a basecoat.