Bartoline Ready Mixed Wood Filler has been formulated for all types of repairs to both interior and exterior wood. The acrylic formulation gives great adhesion with a small amount of flexibility when set, and can be stained, varnished or painted as required. Available in tubs and handy squeezy tubes, in both white and brown shades, allowing direct application to the repair site. When used externally must be sealed with an oil-based paint or varnish.