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 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 into a suitable container Do not thin Ensure the 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 applying Weathershield Exterior Flexible Undercoat or Weathershield Quick Dry Exterior Undercoat