Blackfriars Polyurethane Varnish transforms interior woodwork and gives a tough and durable finish. It gives wooden surfaces new life and enhances the natural shades of wooden floors and furniture. Resistant to knocks, heat and diluted acids. Application Method: Brush and Roller. Coverage: 14m² per litre.Touch Dry: 2-4 hours.Hard Dry: 3 days.Recoatable: 16 hours.