Osmo Wood Floor Filler, White Oak is a water based wood floor filler used to effectively fill knot holes and cracks in wood floorings or to cover nail heads and screws. It sets firmly to all types of woods and does not sink, shrink, crack or fall out.  

All Osmo Wood Floor Fillers are harmless and non flammable. They are designed to take any finishing operations like painting, staining, sanding, oiling or varnishing.