FEB FIBREMIX HANDY BAG 90G - FBFIBREHANDY FEB FIBREMIX is a fine monofilament polypropylene fibre material combined with a powdered admixture, which can be added to cementitious mixes to help prevent shrinking and cracking during the curing process. FEB FIBREMIX also enhances the surface properties and durability of hardened cement based materials. Ideal for use in concrete floor screeds, paths, driveways and garage/shed bases.