Polymer modified grout is a type of grout that contains polymers in addition to the usual cement, sand, and water. These polymers enhance the properties of the grout by improving its adhesion, flexibility, and durability. The addition of polymers helps the grout to resist cracking and shrinkage, making it suitable for use in areas that experience movement or vibration. Polymer modified grout also has better water resistance and chemical resistance compared to traditional grout. It is commonly used in construction for filling gaps between tiles, repairing cracks in concrete, and sealing joints in structures where enhanced performance is needed. This type of grout can be either cement based with polymer additives or epoxy based with polymer modifiers. The polymers may be in the form of latex, acrylic, or styrene butadiene rubber, among others. Overall, polymer modified grout provides a stronger and more flexible solution for various grouting applications.