Plasterboard linings – cracking

Cause

Building movement; timber framing shrinkage

Repair

  • remove existing jointing material; apply tape to joints; stop with gypsum plaster stopping compound; sand and re-paint or re-wallpaper

Cause

Joints not taped before apply stopping compound (joint taping was rarely done before 1975)

Repair

  • remove existing jointing material; apply tape to joints; stop with gypsum plaster stopping compound; sand and re-paint or re-wallpaper

Cause

Land settlement 

Repair

  • remove existing jointing material; apply tape to joints; stop with gypsum plaster stopping compound; sand and re-paint or re-wallpaper
  • where a significant cracking occurs after an earthquake or as a result of land settlement, engage a chartered professional (structural) engineer to asses the damage and give repair options. For significant earthquake events such work may be done by EQC 

Cause

Wind or earthquake shaking

Repair

  • you can download at no charge the BRANZ bulletin BU548 Repairing plasterboard after an earthquake
  • remove existing jointing material; apply tape to joints; stop with gypsum plaster stopping compound; sand and re-paint or re-wallpaper
  • where a significant cracking occurs after an earthquake or as a result of land settlement, engage a chartered professional (structural) engineer to asses the damage and give repair options. For significant earthquake events such work may be done by EQC