Mould that normal cleaning will not shift is the first sign the sealant round your bath or shower needs replacing. Cracks, peeling, or water pooling where it should not are the other signs it is time to reseal. Round a shower tray, a failed seal can let water through to the ceiling directly underneath.
Getting it right starts with removing all of the old sealant. The area then has to be clean and completely dry before anything new goes on. Fill the bath with water before you seal it, so the joint does not crack later when the bath is in use.
Use a waterproof, mould resistant sealant that stays flexible, because a bath expands and contracts with use. Then leave it for at least a full day before anyone uses the bath or shower. It usually takes one to two days to dry.
Resealing early is a small job, and it saves you from water damage to the ceiling below. If mould keeps coming back after cleaning, or you see water where it should not be, that is the time to call. I fit bathrooms across Caerphilly at Truscon, so a seal that keeps failing is something I am glad to look at. Find out more about my bathroom installation work and get in touch.
