Polyurethane resin-based primers provide excellent resistance to mechanical damage, environmental impacts and aggressive chemicals. These primers create a strong and durable coating that improves the adhesion of finishing coats to the surface, especially if they are to be coated with polyurethane varnishes or paints. Polyurethane primers are often used to prepare metal, wood and concrete surfaces, as they increase their resistance to wear, moisture and temperature changes. Such primers are ideal for external and internal work where high strength and durability of the coating is required.