Licensed Biocides - Slate

For slate surfaces, our range of licensed biocides offers effective protection against algae, lichen, and other organic growth, keeping slate clean and well-maintained. On smoother or denser slate finishes, however, the residual protection may be limited, as biocides may not penetrate as deeply. For more textured slate, biocides provide longer-lasting defence by penetrating and offering ongoing resistance to organic buildup.

In colder conditions, we recommend BioClear 50 Pro, which includes a solvent component to enhance performance in low temperatures, making it an ideal choice for year-round slate care. When applying these biocides, take care to prevent any runoff from entering the water system. Always follow product guidelines, use suitable PPE, and control runoff for safe and compliant application. With PureSeal’s licensed biocides, professionals can achieve effective, lasting results on slate surfaces, addressing organic buildup responsibly and with attention to the stone’s finish.