How to Prevent and Remove Mould in the Bathroom

How to Prevent and Remove Mould in the Bathroom

Mould can be extremely stubborn once it develops, which is why preventing it in the bathroom is far easier than trying to remove it later. Beyond looking unsightly, mould spores can also pose health risks and may even cause lasting damage to bathroom tiles and grout.

How Mould in the Bathroom Grows?

The bathroom may be your home’s space for relaxation, but it’s also the area most prone to mould. Daily baths and showers raise humidity levels far beyond 70%, leading to condensation that runs down the walls and gathers in grout, sealant and corners.

Mould spores thrive in these conditions and can spread quickly, creating a breeding ground for mould. They grow particularly well on damp fabrics and in small gaps within silicone sealant. In severe cases, when mould begins to damage the seals, professional and potentially costly removal may be required.

Tips to Prevent Mould Growth

A few simple daily routines can make a difference between preventing bathroom mould and letting it grow uncontrollably.

Keep the Bathroom Ventilated

Keep air moving by opening windows after bathing or showering. During the day, leave a window slightly open to ventilate the room.

Change Textiles Regularly

Replace bath or shower towels at least once a week, and hand towels every 2–3 days. Avoid fabric decorations like artificial flowers.

Dry Tiles

Wipe down tiles, the shower tray, bathtub, and grout after use. If you minimise moisture it means less chance for mould to grow.

Dry Towels Properly

Hang towels on the radiator to dry, and put damp sportswear straight in the washing machine.

Monitor Humidity

A hygrometer shows when humidity exceeds 50–70%. If it’s too high, ventilate the room until levels drop.

Consider a Grout-Free Bathroom

Smooth, easy-clean surfaces reduce areas for mould and limescale to form and are much easier to maintain.

Maintain Bathroom Heating

Keep the bathroom around 23°C and leave the heating on when possible to reduce dampness.

Control Humidity

Use a dehumidifier in bathrooms that don’t ventilate well.

Advice for Bathrooms Without Windows

Mould can be more difficult to manage in bathrooms without windows, but it is still manageable. Modern ventilation systems can help maintain good airflow and keep the space dry. If your bathroom has an external wall, installing a heat-recovery fan is a smart choice as it boosts ventilation while also saving energy and lowering heating costs. Keeping the bathroom door open and ensuring that you insulate the cavities above the ceiling and on the external wall efficiently will also greatly reduce the potential for mould.

Also, by law, internal bathrooms must be equipped with an electric fan. If this is not enough, you can use an electric dehumidifier or improve airflow from a nearby room.

How to Remove Mould in the Bathroom?

Removing mould from your bathroom is manageable when you use the correct techniques and stay safe. The steps below can help you remove mould efficiently.

1. Start by Protecting Yourself – Use gloves, a mask and old clothes before you start. Mould spores can cause skin and lung irritation, so make sure you protect yourself during cleaning.