Cornforth White is a light grey that leans neither warm nor cool. Between Ammonite and Purbeck Stone, it forms the mid tone in the Farrow & Ball Easy Neutrals group. Try it as a wall colour with the lighter Ammonite on the ceiling and trim for a put-together all-grey look.Exterior Masonry is a super-matt, long-lasting finish for exterior walls. Its water-resistant formula protects walls, while at the same time offering the highest level of water vapour permeability to allow them to breathe. Applied in line with the Product Advice Sheets, it resists flaking, peeling, and fading for up to 15 years. Available in 108 Farrow & Ball colours. Providing it has been applied in accordance with Farrow & Ball Product Advice Sheets. Not suitable for use on exterior plastic surfaces or decking.