Fibre-cement shingles – moss or lichen

Causes

Insufficient cleaning

The roof remains damp due to overhanging branches

Listed under: concrete and cement, fibre-cement, Roof, cladding, moisture, roof cladding, fibre-cement shingles

Cause

Insufficient cleaning

Repair

  • clean roof using a solution of 1 part household bleach to 4 parts water and brush with a soft broom. Do not waterblast as this can force water up between the shingles.

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Cause

The roof remains damp due to overhanging branches

Repair

  • clean roof using a solution of 1 part household bleach to 4 parts water and brush with a soft broom. Do not waterblast as this can force water up between the shingles.
  • cut  back overhanging branches 

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