Algae Moss - Granite

Algae Moss - Granite

Professional advice and the right Lithofin products for your granite

Medium

Algae and moss growth on stone is a common outdoor problem, particularly in damp, shaded areas. Algae appears as green, red, or black discolouration on the surface, while moss forms thicker cushion-like growths in grout lines and textured areas. Biological growth occurs when moisture, shade, and organic nutrients create favourable conditions.

Recommended products

Lithofin ALGEX undiluted on dry surface

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Step-by-step instructions

Apply Lithofin ALGEX undiluted on dry surface. Leave 24-48 hours. Rinse with water (garden hose or gentle pressure washer). For stubborn growth: scrub with stiff brush before rinsing. ALGEX also works preventively.

Expert tips

  • Do not pressure-wash delicate stone at close range
  • Marble and limestone may etch from acidic biological cleaners
  • Sandstone is soft - use low pressure only

Related Knowledge

Stone Guides

Granite

Problem Guides

Algae Moss

Care Guides

Granite Kitchen countertopGranite Outdoor terraceGranite Interior floor (hallway, living room)

Step-by-Step Recipes

New Granite Countertop First SealStained Granite Countertop Recovery

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