Debunking Roofing Myths: Lichen Eats into Concrete Tiles

Home's in AustraliaLichens are one of the few things Australian homeowners fear their roofs to have. Most people believe these eat into concrete tiles. Well, they do not.

Lichens Like It Old

Contrary to popular beliefs, lichens do not gnaw their way through a roof tile or slate. Nonetheless, the fungi may take root on drainage systems –  reason homeowners have roof coating. The fungi live in places where there is moisture. You can spot them anywhere around the house, especially around the water channels of tiled roofs.

Lichens are not an issue for new roofs, but can be a problem for old ones. Many homeowners dread these during late winter. Most lichen species grow on clays, slates, concrete tiles and fibre cement sheets.

The presence of lichen on a roof gives it an older appearance and can affect the roof’s overall structural integrity. It can block the water channels of the roof and lead to further problems, as explained by roofing specialist Permacoat.

Finding Out More about Lichens

A few other organisms play a more crucial role in the Australian ecosystem than lichens. Lichens are a strange assemblage of fungi and algae that have a symbiotic relationship.

These can survive the harshest weather conditions and rarely dies during drought. The one thing that will kill it, though, is atmospheric air pollution.

The wind helps in spreading lichen seeds, which is why they reach the exposed surfaces of tiled roofs. Rain and bird droppings nourish these seeds. There are approximately 15,000 species of lichen, but the most common is the Ascomycetes Foliose.

Lichens reproduce both sexually and asexually. Its small spores make transfer possible across thousands of kilometres. With such traits, these can settle in roofs and form new colonies.

While lichens are not a major issue for most homes, their long-term material decaying effects prompt homeowners to call for roof repairs. Professional roofing experts help in preventing future problems caused by lichens and provide peace of mind to homeowners.

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