Iolite Bond Block jointing mortar is a specialized type of mortar used in masonry construction to bind and fill the gaps between blocks or bricks. It plays a crucial role in ensuring the structural integrity, strength, and durability of walls and structures. It is a pre-mixed blend of cement, graded sand, polymers, and other additives. The combination of these materials imparts excellent bonding properties, workability, and water resistance to the mortar.