Leyland Wood & Metal Undercoat 2.5L Brilliant White Leyland Wood & Metal Undercoat provides a tough and durable base layer for non-drip gloss, so youll get more from your top coat. It is suitable for use on interior and exterior wood and metal. Dry time: 16-24 hours. Coverage: up to 12m (per litre) Due to geographical locations we are unable to deliver to: Isle of Wight, Isle of Man and Ireland.