Yes, when replacing the silicone sealant in a shower cubicle, removing the mould underneath is a standard and necessary part of the job or at least it should be if done properly.

Here’s what a professional sealant replacement should include:

1. Full removal of old silicone sealant – All mouldy or torn sealant is carefully stripped off.

2. Cleaning and treating the area – The underlying surfaces are cleaned and treated with an anti-mould solution to kill existing spores and prevent recurrence.

3. Drying time – The area is left to dry completely before applying the new sealant to avoid sealing in moisture.

4. Application of new sanitary-grade silicone – Mould-resistant silicone is then neatly applied.

✅ So yes, mould removal is included as part of a proper resealing job.
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