SikaFiber® PP-12 is a polypropylene monofilament fibre which reduces the occurrence of plastic shrinkage cracking and plastic settlement whilst enhancing the surface properties and the durability of the hardened cementitious product. The fibres are coated with surfactant to improve dispersion. SikaFiber® PPM-12 is extremely fine and although slightly visible at the plastic stage, they are not readily seen on the hardened surface of the cementitious product.