Bitumen-impregnated sheets – moss or lichen

Causes

Insufficient cleaning

The roof remains damp due to overhanging branches

Listed under: health and safety, chemicals, Roof, cladding, roof cladding, bitumen-impregnated sheets

Cause

Insufficient cleaning

Repair

  • replace damaged roofing immediately
  • treat with water-based chemical treatments and paint in accordance with the manufacturer's instructions

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Cause

The roof remains damp due to overhanging branches

Repair

  • replace damaged roofing immediately
  • treat with water-based chemical treatments and paint in accordance with the manufacturer's instructions
  • cut back any overhanging branches 

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