Hay is a warm and dusty yellow with a distinct green undertone, evoking the freshness of the crop from which it takes its name. It\'s less intensely coloured than the sunny Yellow Ground, and therefore easier to use for those who love yellow but are nervous of strong wall colours.Exterior Eggshell brings long-lasting colour to outdoor spaces with a finish that remains flexible once dry, protecting wood and metal surfaces through changing weather. Added preservatives help to prevent the growth of algae and fungi, and the resin-rich formula resists flaking, peeling, and fading for up to six years. Providing it has been applied in accordance with Farrow & Ball Product Advice Sheets. Not suitable for use on exterior plastic surfaces or decking.