Based on the zinc white colour found on a window salvaged from Cambridge, this used to be our whitest white, before Project White was introduced in 2019. Original window obtained from the Charles Brooking Collection. This is the colour used on the Russian Cottage on Chatsworth Estate.
Coverage is approx 15-20 m2, which equates to about £ 3.30 / m2 for the finished job (done in 3 coats).
For Farrow & Ball Exterior Eggshell (+ primer) this is approx £ 6.46 and for Dulux Trade Exterior approx £ 4.14.