Everbuild 101 Linseed Oil Putty is specially formulated using only the best grade linseed oil, for glazing single glass into metal, softwood and hardwood window frames and features a added plasticiser to improve adhesion and to help prevent cracking. Everbuild 101 Linseed Oil Putty has an extended shelf life and is easier to apply then most competitive putties. It is worth noting that this product is unsuitable for plastic frames, heat absorbing glass, double glazing or frames treated with decorative microporous stains. It is important to always mix contents of pack thoroughly to blend in any surface oil and to refrain from overpainting until a surface skin has formed which can take between 7 and 30 days.