shower tray sealant mouldy - remove sealant then re-do?

[wallaby]

ok, i've tried cleaning the sealant, the mould doesn't budge, so i think the best way is to remove the sealant altogether and replace, so how do i strip out the mouldy stuff? And what sort of sealant is best to replace it with?

Of course will also look at the ventilation situation - we have no window in the bathroom but do have an extractor fan, which obviously isn't good enough!

[allan the locksmith]

Screwfix do a chemical sealant remover that works well. Use an anti fungicial sealant ot replace it with