General description Dulux Trade Weathershield Preservative Primer + (BP) penetrates into wood to seal and preserve against water damage, decay, and blue stain fungi. It provides 8 years of weathering durability when used as part of the full Weathershield exterior paint system. Technical specifications Finish: Matt Coverage: Up to 5m² per litre Drying Time: 16-24 hours Recoatable: Allow the previous coat to soak in before applying the next Composition: Water-based Installation 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 the second coat to dry Lightly sand before application of Weathershield Exterior Flexible Undercoat or Weathershield Quick Dry Exterior Undercoat