This task is for an accessible joint whose replacement has been assessed and authorised, with sound backing and a stable fitting. An active leak, damaged substrate, loose bath or uncertain waterproofing detail needs investigation first. A tenant should obtain the appropriate repair agreement.

Read the sealant, cleaner/remover and fitting instructions before starting. Plan ventilation, eye/skin protection and safe tool use for those exact products. A generic “nitrile glove” rule cannot establish chemical protection. Keep children and pets away, avoid skin contact with uncured material, and do not mix chemicals.