Primers for wood and metal surfaces designed to prepare substrates before applying decorative or protective coatings. Oil-based, oxide and water-based acrylic primers promote adhesion of topcoats while sealing porous timber and providing corrosion protection for ferrous metal. These coatings form the base layer within coating systems applied to gates, railings, structural metalwork, timber joinery, fencing and doors. Proper priming stabilises substrates and supports coating durability across residential and light commercial maintenance applications.