Black Spot Removers

Black spot is one of the most common complaints on patios, paths and natural stone, particularly sandstone and limestone paving. These dark, stubborn marks are caused by lichen that roots into the surface of the stone, which is why pressure washing alone rarely removes them and can even damage the paving. Our black spot removers are designed to break down the lichen and lift the staining it leaves behind, restoring the natural colour of the surface without aggressive mechanical cleaning.

The range includes sodium hypochlorite based treatments such as Sodium Hypochlorite 15% and the Nu-Clear family, available as a liquid, a clinging gel for vertical or sloped areas, and Nu-Clear Fallout Pro for stubborn residual marks, alongside StoneClean Pro for general stone cleaning. Most treatments are applied with a low pressure sprayer, left to dwell and then rinsed, with heavier infestations sometimes needing a second application. Please read each product description carefully for dilution rates and surface suitability, and always test a small area first. Protect surrounding plants, lawns and coloured materials, and wear the correct PPE, including gloves and eye protection. Following treatment, a licensed biocide or a suitable sealer can help slow regrowth and keep the surface looking cleaner for longer.