Application: Brush only. Do not spray. MIX THOROUGHLY BY SHAKING THE CONTAINER BEFORE USE. Pour out a sufficient amount of primer for the job into a suitable container. Do not thin. Ensure surface is clean, dry and free from any surface coating, mould or algae before use. Use pre-treated timber for in ground contact situations. Apply two even coats. Allow 24 hours for second coat to dry. Lightly sand before application of Weathershield Exterior Flexible Undercoat, or Weathershield Quick Dry Exterior Undercoat.