Expert advice
When should you reseal a shower?
Signs your shower silicone may need replacing, and what to check before booking a specialist.
Cracking, lifting or missing silicone can allow water to travel into places it should not reach. Dark staining can also indicate ageing sealant, although surface mould does not always mean the seal has failed.
Before resealing, the underlying surfaces should be clean and dry. If water has already entered behind tiles or trays, the cause of the leak needs investigating rather than simply applying new silicone.
A specialist can assess the existing joint, remove failed material and apply a suitable replacement sealant.