Low-pressure chemical roof cleaning across South Wales. The right method for slate, painted render and fragile tile — safe on the surface, effective against algae and lichen.
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A biocide-rich solution is applied at low pressure and left to dwell on the surface. The chemistry breaks down algae, lichen and organic growth at the root, then a gentle rinse takes everything away. It’s the right method for Welsh slate — it kills the growth without the disturbance of high pressure.
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