Some of the not-so-obvious factors that contribute to roofs getting dirty are “fallout” from jumbo jets (ask anyone who lives under a flight path how often they have to wash their cars), and the most common is mould and lichen growth.
What most often appears to be dirt on a roof is, in fact, largely mould and lichen growth. This is especially the case with tiled roofs. Both concrete tiles and terracotta tiles are a haven for the growth of unsightly mould. This is because they have a rougher surface than a metal roof, making it easier for the mould to stick and spread.
Get rid of all that nasty growth by getting your roof pressure cleaned.
Call David today for your fee free and obligation free quote.