Exterior

  • Porus, Slipped or Brittle Tiles
  • Fungal Growth
  • Degraded Jointing
  • Broken Flashing

Hidden Dangers

  • Structurally Compromised Battens
  • Unattached Ineffective Felt
  • Constrained Ventilation
  • Nail Sickness

Internal

  • Structurally Compromised Boards via Water Ingress or No Ventilation
  • Sporific Mold