Suitable For Use On Soft Woods; Hard Woods; Chipboard; Fibreboards; Metal Screws; Nail Heads And Plaster. Dries To A Hard Finish; Making It Easy To Sand Or Drill. Can Be Over Coated With Varnish Or Paint. To Fill Cracks; Splits; Holes; Surface Defects And Imperfections On All Kinds Of Wood. Also Suitable As A Grain Filler. Not Suitable For Use Where Flexibility And Movement Accommodation Is Needed. Do Not Apply Onto Coated Surfaces. Must Be Over Coated With Varnish Or Paint For Exterior Applications.