A 5L tin is normally sufficient for: Brush: Smooth planed wood: 40m² Brush: Rough sawn wood: 10-14m² Spray: Smooth planed wood: 30-40m² Spray: Rough sawn wood: 20m² Coverage quoted with 2 coats however a third coat may be necessary to achieve a uniform colour and to give added protection to horizontal surfaces. Coverage may be less on weathered or absorbent wood.