Water-soluble ready-mixed roller filler. Easy to apply and easy to sand after curing (granule size <0.20 mm). Dry interior spaces: Use on walls and ceilings for levelling rough spots, joints, and surfaces; also use on the seam tape fastenings of gypsum panels. For substrates such as concrete, lightweight concrete, plaster, and wood fiber and gypsum board panels. Excellent for making rough spots smooth, e.g. fiberglass wallpapers. Substrates must be dry, dust-free, and clean. M1 certified.