in a two-minute rainstorm is more important than average rainfall, the British Standards Institute notes that an indicative storm in Essex, (annual rainfall 500 mm per annum) delivers 0.022 L/s/m²- while one in Cumbria (annual rainfall 1800 mm per annum) delivers 0.014 L/s/m².

Eaves gutters can be made from a variety of materials such as cast iron, lead, zinc, galvanised steel, painted steel,