Dulux Trade Stain Block Primer - White Product Description Dulux Trade Stain Block Primer is a water-based primer suitable for use on interior walls and ceilings. It is formulated to prevent the migration of stains through the finished paint film and also to seal and bind dry, friable and powdery interior surfaces such as plaster, brick and distemper. It is the effective treatment for stains caused by: water-based and solvent-based inks, crayon, biro, coffee, grease, scuff marks, water and stain.Application Description Application : Brush or short pile roller. Do not spray. STIR THOROUGHLY BEFORE USE. After suitable surface application, apply 1 coat of Dulux Trade Stain Block Primer to all bare or stained surfaces to allow to dry. Two coats will be necessary for difficult stains. Finish with an appropriate Dulux Trade paint system. Technical Information FinishMatt CoverageUp to 14m² per litre. Drying TimeDependent on temperature and humidity RecoatableAfter 6-12 hours. Note - this product can usually be recoated within 6-8 hours - but on very porous surfaces a longer drying time may be required. CompositionWater-based