MasterCast 141 is a (SBR) styrene-butadiene co-polymer latex specifically designed for use with cement compositions.it is used in mortar and concretes as an Admixture to increase resistance to water penetration, improve abrasion resistance and durability. It is used with cement as a reliable water-resistant bonding agent. (Typical Applications) Concrete repair: spalled concrete, repairing floor, beams and precast slabs. Floor screeds and toppings: abrasion resistant and non-dusting floor, underlay for special finishes, mild chemical, and effluent-resistant floor. External rendering: waterproof, weatherproof and frost resistant render. Waterproofing & tanking: basements, lift pits, inspection pits, wate towers, liquid tanks, effluent tanks and swimming pools. other Applied: bedding tiles, re-fixing slip bricks, bonding new concrete to old