Knotting for sealing knots, resinous and creosoted timber to prevent bleeding through paint film. Sandpaper surface smooth before applying liberally over knots and surrounding area. Do not sandpaper knotting once applied. Resinous and creosoted timber should be sealed completely with 2 coats. Allow 1 hour to dry before priming. Clean brushes with methylated spirits. Available in natural or white. Available in sizes: 125ml, 300ml, 500ml (Natural only) & 1ltr. Rustins Brown Knotting is based on pure shellac and alcohol; it is naturally brown in colour. For application to bare wood. Clean knots prior to priming/painting. To prevent discolouration of paint film. Generally used with oil-based paints. Made in the UK. Size: 300ml. Coverage: 10-12m² per litre, 1 coat, depending on the absorbency of the surface. Usage Instructions: Shake bottle before use. Fast drying. Prevents discolouration of Paints. Interior or Exterior use. The surface must be clean, bare and sanded smooth. Clean off any excess resin using white spirit and allow to dry. Knotting should not be used under polyurethane clear varnishes, water based varnishes or water based paints.