Repairs and problems

Black mould in bathroom sealant

At a glance

  • Surface mould wipes off; staining that remains after cleaning is growth within the sealant and needs the joint removing.
  • Persistent regrowth after a proper reseal points to a ventilation problem or water getting behind the joint.

What actually fixes it

Surface mould wipes off; staining that remains after cleaning is growth within the sealant and needs the joint removing.

Persistent regrowth after a proper reseal points to a ventilation problem or water getting behind the joint.

Questions we get asked

Do mould-resistant sealants work?

They slow it, but they do not overcome poor ventilation or a leaking joint.

How long should a reseal last?

Several years in a well-ventilated bathroom.

More on this

Cracked groutRepairs and problemsShower doors leakingRepairs and problemsLoose and hollow tilesRepairs and problemsMaintenance schedulesPlumbing and maintenanceBathroom paintMaterials and finishesDealing with a bathroom in a probate propertySituations and planning
Recent contemporary bathroom renovation completed in Cheltenham, relevant reference for Gloucestershire clients, referenced in our guide to mouldy sealant

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