Mora. C Filler is composed of a fine filler, high-quality white cement, bonding chemicals, and special additives. It is supplied as a dry powder in pre-weighed bags ready to use on-site; it only requires the addition of clean water to produce a cohesive mix. Mora crack Filler is a high-quality product for repairing static cracks, in addition to providing a very smooth surface finish for subsequent application of paints, decorative coatings & wallpapers. Mora crack Filler can be applied in crack thickness from scrape coat to 4mm.