Removing algae from stone

Our stone cleaning service is very popular. Bear in mind this is not the same as sand blasting or removal of carbon deposits. This is removal of green/black algae which needs cleaning and treating with an anti-fungicide

The following list helps you understand why this is important. It makes huge differences to properties that have stone around windows/doors etc.

Visit our website for our portfolio. DSgo.co.uk

#stonecleaning #algaeremoval

🧱 1.

Prevents Physical Damage to the Stone

• Biological growth retains moisture against the stone surface.

• Over time, this moisture can:

  
  

  • Cause cracking, spalling, or flaking as water freezes and thaws.

  • Lead to salt crystallization within the stone pores, weakening its structure.

  • Encourage organic acids (from lichens and algae) that slowly dissolve or etch the stone.

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🧩 Result: gradual erosion and loss of surface detail — especially harmful for heritage buildings and monuments.

🌿 2.

Stops Spread and Regrowth

• Moss, algae, and lichen release spores that easily spread to other areas of the stone or nearby structures.

• Cleaning removes both the visible growth and the microscopic root systems, preventing future infestations.

💧 3.

Improves Drainage and Water Flow

• On paving, walls, or decorative stonework, biological buildup can block natural drainage and cause water pooling.

• Over time, this encourages more growth and increases moisture damage risk.

🎨 4.

Restores Original Appearance

• Growth causes discoloration, green or black staining, and patchy textures that hide the stone’s true color and craftsmanship.

• Cleaning restores the natural beauty and architectural character of the material — especially important for commercial or heritage properties.

⚙️ 5.

Reduces Long-Term Maintenance Costs

• Regular, gentle cleaning prevents buildup that would otherwise require aggressive or costly restoration methods later.

• Maintaining the stone properly extends its service life and reduces repair frequency.

🧯 6.

Improves Safety

• On walkways, steps, and paving, algae and moss can make surfaces extremely slippery, especially when wet.

• Cleaning helps maintain safe, non-slip conditions for pedestrians and staff.

🏛️ 7.

Preserves Historical and Aesthetic Value

• For heritage sites or historic stonework, biological growth can obscure carvings, inscriptions, and decorative features.

• Careful cleaning helps preserve cultural integrity while protecting the stone from decay.