Dirty roof surface of liquid-applied roofing membrane

Cause

Accumulation of dirt/debris not flushed off by rain

Repair

  • sweep the roof clean to remove loose debris
  • hose and soft broom wash – do not waterblast
  • if moss or mould is present, apply a proprietary mould killer

Cause

Overhanging branches

Repair

  • sweep the roof clean to remove loose debris
  • remove overhanging branches
  • hose and soft broom wash – do not waterblast
  • if moss or mould is present, apply a proprietary mould killer