"Crown Trade PX4 All Purpose Primer – Quick-Drying Stain-Blocking Primer for Interior and Exterior Use - White - 1LCrown Trade PX3 All Purpose Primer is a premium-quality primer specially developed to promote excellent adhesion to interior and exterior surfaces, whilst offering protection from alkaline attack. With superior stain-blocking properties, PX3 has an advanced, water-based formulation that is ideal for use on difficult substrates including glass, ceramic tiles, melamine and previously painted surfaces, as well as wood and most non-ferrous metals. Advanced Water-Based FormulationCrown Trade’s advanced water-based formulation gives PX4 All Purpose Primer the added benefit of low odour emission, making it ideal for a comfortable application with minimal disruption. Touch dry in just 30 minutes and recoatable within an hour, PX4 dries rapidly after application, saving valuable time spent decorating. Stain-Blocking Primer to Combat Even the Most Stubborn StainsCrown Trade PX4 All Purpose Primer has excellent stain-sealing properties, allowing even the most stubborn stains to be covered with ease. This advanced formula seals stains into the surface of the substrate, allowing them to be completely covered and concealed by the paint or decorative product. Working well on marks and imperfections that are notoriously difficult to remove, PX4 is ideal for use on surfaces that have been stained by smoke, crayon, tannins, water or aerosols. Excellent Coverage on Difficult SubstratesSpecially developed to achieve excellent adhesion to almost any surface, PX4 All Purpose Primer is ideal for use on interior and exterior wood, previously-painted surfaces and most non-ferrous metals including aluminium, tin, lead and brass. PX4 also offers great coverage on especially difficult substrates, such as glass, ceramic tiles and melamine. Quick Drying Advanced all-purpose primer Excellent adhesion Blocks stubborn stains Resists alkaline attack Touch Dry : 30 mins Recoat Time : 1 hour"