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Black Spot Lichen on Roof Tiles: Causes & Treatment
What Causes Black Spot Lichen on Roof Tiles? Black spot lichen on roof tiles is caused by airborne lichen spores colonising damp, porous or slow-drying roof surfaces. It is most common where roof tiles hold moisture, receive limited sunlight, sit beneath trees, or have developed a rough surface through age...
How Long Does Roof Cleaning Last? UK Guide
How Long Does Roof Cleaning Last? Professional roof cleaning in the UK typically lasts between 2 and 5 years, depending on the cleaning method used, the roof material, surrounding trees, local weather, and whether a biocidal treatment is applied after moss removal. A roof that is scraped only may begin...
Can You Pressure Wash Roof Tiles? Safer UK Advice
Can You Pressure Wash Roof Tiles? Yes, you can pressure wash some roof tiles, but in most UK roof cleaning situations it is not the safest or most appropriate method. High-pressure washing can remove moss, algae and surface dirt quickly, but it can also damage roof tiles, disturb laps, force...
How Often Should a Roof Be Cleaned? UK Guide
How Often Should a Roof Be Cleaned? Most roofs in the UK should be inspected at least once a year and professionally cleaned every 3 to 5 years, depending on moss growth, shade, roof material, location and drainage performance. In high-risk locations, such as shaded north-facing roofs, properties under trees,...
