Pressure and method are matched to the roof covering — concrete tiles can generally take a firmer clean, while older clay tiles and slate are treated more gently by hand.
Where possible, work is done from a ladder or platform at the eaves rather than walking across the tiles, reducing the risk of cracked tiles.
It depends on aspect and surrounding trees, but most roofs benefit from a check every two to three years.
Yes — this is one of our most requested combinations, since roof moss is one of the main causes of blocked gutters.