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Live Attack

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1. LIVE ATTACK WOOD ROT AND INSECT DAMAGE IN BUILDINGS 2. DRY ROT ã Latin Name: Serpula lacrymans ã Common Name: Dry Rot Fungus ã Habitat Mostly softwood ã Damage…
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  • 1. LIVE ATTACK WOOD ROT AND INSECT DAMAGE IN BUILDINGS
  • 2. DRY ROT • Latin Name: Serpula lacrymans • Common Name: Dry Rot Fungus • Habitat Mostly softwood • Damage Characteristics:
  • 3. DRY ROT TYPICAL DAMAGE
  • 4. FUNGAL CHARACTERISTICS –Mycelium –Strands –Fruit Body - See Slide –Spores
  • 5. DRY ROT- FRUIT BODY IN CORNER OF CEILING
  • 6. DRY ROT SHEETS OF MYCELIUM EXPOSED BY REMOVAL OF TIMBER WALL PANNELLING
  • 7. TYPICAL WHITE ROT DAMAGE TO TIMBER
  • 8. TYPICAL BROWN ROT DAMAGE TO TIMBER
  • 9. TYPICAL SOFT ROT DAMAGE TO TIMBER
  • 10. WET ROT (BROWN ROT) FRESHLY COLONISED WOOD
  • 11. WET ROT (BROWN ROT) LONGER TERM DAMAGE
  • 12. WET ROT (BROWN ROT) STRANDS
  • 13. WET ROT (BROWN ROT) FRUIT BODIES
  • 14. WET ROT (BROWN ROT) MYCELIUM ON THE WOOD
  • 15. WET ROT (BROWN ROT) FRUIT BODY (FIBROPORIA VAILLANTII)
  • 16. WET ROT (BROWN ROT) FRUIT BODY (PORIA PLACENTA)
  • 17. WET ROT (BROWN ROT) FRUIT BODY (AMYLOPORIA XANTHA)
  • 18. WET ROT (WHITE ROT) FRUIT BODY AND DAMAGED WOOD
  • 19. WET ROT (WHITE ROT) DAMAGED WOOD WITH BROWN MYCELIUM
  • 20. WET ROT (WHITE ROT) FRUIT BODY (SEPARATED FROM WOOD)
  • 21. WET ROT (WHITE ROT) FRUIT BODIES (PLEUROTUS OSTREATUS)
  • 22. WET ROT (WHITE ROT) STRANDS ON DAMAGED WOOD
  • 23. WET ROT (WHITE ROT) FRUIT BODY (ASTEROSTROMA SP)
  • 24. WET ROT (BROWN ROT) MYCELIUM AND STRANDS ON DAMAGED WOOD FRUIT BODIES SHOWN DETACHED
  • 25. REMEDIAL TREATMENT OF WET ROT: • Establish size and significance of attack: • Locate and eliminate sources of moisture: • Promote rapid drying of the structure: • Remove rotted wood: • Apply localised preservative treatment: • Replacement work use preservative treated timbers: • Introduce support measures:
  • 26. NON WOOD ROTTING FUNGI • Moulds • Blue stain in service • Plaster Fungi (Coprinus spp. Peziza spp) • Slime Moulds
  • 27. MOULDS • Habitat - Surface of damp wood, plaster, wallpaper or paint. • Characteristics: Surface growths usually downy and produce masses of powdery spores. • Remedial Treatment: Ventilation, Removal of surface spores, heating, cleaning
  • 28. MOULD GROWTH
  • 29. BLUE STAIN IN SERVICE • Habitat - Sapwood cells of moist wood but mainly ray cells. Cannot grow below 20% moisture content. • Characteristics: Disfigurement of the wood Black blue or grey streaks and patches on the wood • Remedial Treatment Exterior timbers only.
  • 30. BLUE STAIN IN SERVICE CAUSING DAMAGE TO PAINT
  • 31. BLUE STAIN IN SERVICE CAUSING DAMAGE TO NATURAL FINISH
  • 32. PLASTER FUNGI • Habitat: Damp brickwork or plaster. Feeds on surface detritus or on organic material included in walls • Characteristics: Produce large fruit-bodies or mycelial growths which may be mistaken for those of wood-rotting fungi. • Remedial treatment: Locate and remove source of dampness.
  • 33. PLASTER FUNGI FRUIT BODIES (COPRINUS SP)
  • 34. PLASTER FUNGI FRUIT BODIES (PEZIZA SP)
  • 35. PLASTER FUNGI FRUIT BODY(C4 TIMES NATURAL SIZE) GROWING ON FLAKES OF WHITE PAINT
  • 36. SLIME MOULDS SPORE DUST FROM RUPTURED FRUIT BODIES ON WOOD
  • 37. ALGAL GROWTH RESULTING FROM OVERFLOWING HOPPER
  • 38. CHEMICAL DAMAGE TO WOOD
  • 39. COMMON FURNITURE BEETLE
  • 40. COMMON FURNITURE BEETLE DAMAGE TO WOOD
  • 41. COMMON FURNITURE BEETLE BORE DUST (x 10)
  • 42. LYCTUS POWDERPOST BEETLE
  • 43. LYCTUS POWDERPOST BEETLE DAMAGED WOOD
  • 44. LYCTUS POWDERPOST BEETLE BORE DUST (x 10)
  • 45. HOUSE LONGHORN BEETLE
  • 46. HOUSE LONGHORN BEETLE BORE DUST (x10)
  • 47. HOUSE LONGHORN BEETLE DAMAGE EMERGENCE HOLES
  • 48. HOUSE LONGHORN BEETLE DAMAGE CROSS-SECTION SHOWING EXTENT OF DAMAGE TO SAPWOOD AND SURFACE SKIN OF SOUND WOOD
  • 49. DEATHWATCH BEETLE
  • 50. DEATHWATCH BEETLE DAMAGED WOOD
  • 51. DEATHWATCH BEE3TLE BORE DUST (x10)
  • 52. PTILINUS BEETLE
  • 53. PTILINUS BEETLE DAMAGED WOOD
  • 54. WOOD-BORING BEETLE
  • 55. WOOD-BORING WEEVIL DAMAGED WOOD
  • 56. WHARF BORER BEETLE
  • 57. WHARF BORER BEETLE DAMAGED WOOD
  • 58. BARK BORER BEETLE
  • 59. BARK BORER BEETLE DAMAGED WOOD
  • 60. BARK BORER BEETLE BORE DUST (x10)
  • 61. MOTH DAMAGED WOOD
  • 62. SAWFLY DAMAGED WOOD
  • 63. FOREST LONGHORN BEETLE
  • 64. FOREST LONGHORN BEETLE DAMAGED WOOD
  • 65. DERMESTID BEETLE
  • 66. DERMESTID BEETLE DAMAGED WOOD
  • 67. WOOD WASP DAMAGED WOOD
  • 68. BOSTRYCHID POWDERPOST BEETLE
  • 69. BOSTRYCHID POWDERPOST BEETLE DAMAGED WOOD
  • 70. JEWEL BEETLE
  • 71. JEWEL BEETLE DAMAGED WOOD
  • 72. PINHOLE BORER BEETLE DAMAGED WOOD
  • 73. MARINE BORER DAMAGED WOOD
  • 74. FINALLY • Know the preservatives and methods of application for pretreatment of wood. • Know remedial treatments for eradicating fungi and insects • ALWAYS be aware of Health & Safety aspects of remedial treatments.
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