External gutters – moss or lichen growth

Causes

Infrequent cleaning

Listed under: metal, plastic, Roof, gutters

Cause

Infrequent cleaning

Repair

  • clean by hosing and brushing; use a solution of 1 part household bleach to 4 parts water if necessary. Disconnect downpipes where roof water collected 
  • when working at height, always let someone know. Ensure the access ladder is in good condition and is securely set up on a solid level base. The correct angle for the ladder is 1 metre out from the wall for every 4 metres of height. 

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