Bartoline Multi Purpose Filler Powder is an easy to mix and simple to use traditional filler ideal for preparing surfaces by filling cracks and holes in walls, ceilings, around door frames and skirting boards. It has excellent adhesive properties to keep the filler firmly in position and sets hard enough to take nails or screws. It also provides a smooth white surface for overpainting or wallpapering, which does not shrink, and may be sanded when dry. Suitable for exterior use providing it is sealed with an oil-based paint or varnish.