Roof coating specialist in Singapore The Roof tiles are exposed to bad weather conditions in Singapore – like heavy rain, sudden snow, heavy sunlight which all may damage your roofing tiles surface severely. Along the way your roof becomes less water resistant and algae, lichens and moss start to thrive. The roof will also absorb water, adding more weight that the structure has to bear. The fungus in roofing area will detract from the look of your house and will end up in your roof gutters