Blackfriars Exterior Varnish enhances and protects all wood and external joinery. Blackfriar Exterior Varnish provides protection to all types of wood by resisting UV light to give wood superior durability when applied over Blackfriar UV Wood Primer. Available in Satin or Gloss. Application Method Brush or Roller. Coverage 12-14m per litre. Touch Dry 4-6 hours. Hard Dry 3 days. Recoatable 16 hours. The Blackfriars BKFEVS250 Exterior Varnish UV77 comes in the following Colour Clear Satin Size 250ml