Farrow & Ball Wood Primer & Undercoat provides a consistent surface to repaired walls and helps to create a smooth base on which to build up a rich and long-lasting finish. It's designed to match your chosen dark tone top coat colour, and the excellent adhesion when applying means it will also enhance your new colour. This primer and undercoat should be used on interior surfaces - apply directly to the surface using a brush, roller or spray and leave for 11 hours to dry. This tin will cover up to 30m² per 2.5L on average. It is for use on bare or previously painted interior and exterior wood, including floorboards and knots. It creates a smooth, protective base for our Eggshells, Full Gloss or Dead Flat®. Available in four shades to complement your topcoat for a durable, colour-rich finish.