Rustins Knotting - Knot Blocker Apply to bare wood For sealing knots Prevents bleeding through t film Cleaned With: Use Methylated Spirits to clean brushes and equipment Coverage (Sq Mt): 10-12 sq.m per litre Container Size: 300ml Rustins 300ml Knotting Knot Blocking | R330002Knotting for sealing knots, resinous and creosoted timber to prevent bleeding through t 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.