Lichens are a common organic growth you may notice on your roof. Frequently, they are white in colour but may also appear in tones of yellow, green, or brown. Often they form circular patches, approximately the size of a 10 pence coin.
Lichens are basically composed of algae and fungi. The algae provide food for the fungi while the fungi provide the shelter and moisture for the algae for food manufacturing. To survive, they simply require sun, water and a minimal amount of organic acid. This is the reason why they thrive in humid and shady areas. The growth of lichens is most noticeable on north facing areas since this is the part where the evaporation rate is slowest.
Treatment – If left untreated, lichens tend to turn black and look very unappealing. When left unchecked, they become harder to remove during the cleaning process for the cleaning technician.
Our cleaning and pressure washing services cover all of South Devon including all the following areas: Paignton, Torquay, Brixham, Newton Abbot, Totnes, Dartmouth, Teignmouth, Dawlish, Kingsteignton, Exeter and surrounding towns.