The first step is keeping tile dry

If your bathroom or shower is suffering from mould as a result of condensation dampness, it is important to understand that bleach and household products are not effective mould removal treatments.

Mould doesn't just appear on the surface it goes deep into your internal walls and once you have sprayed or soaked the mould in bleach the mould continues to spread within the brickwork. Only specialist mould removal products and proper ventilation can completely remove the underlying cause of the problem.

Condensation damp occurs as a direct result of poor or inadequate ventilation, and once the ventilation issue has been remedied, the condensation and mould should no longer appear. 

Extractor Fans

Check the cubic feet per minute (cfm) volume of your fan usually marked on a label under the grill. Replace it with a larger model if it's too small for the size of your bathroom.

If the fans aren't clearing out most of the moisture in your bathrooms after five to 10 minutes, your fans may not be moving enough air. Fans are certified by the volume (cfm, or cubic feet per minute) of air “exhausted” out of the room. To find the recommended fan capacity for your bathroom, simply multiply the bathroom square footage by 1.1 (assuming an 8-ft (2.4384m). ceiling; for a 9-ft (2.7432m). ceiling, multiply by 1.5).

No matter where you live, a high moisture level in your bathroom makes mould almost impossible to get rid of, no matter how much you clean. Eliminating bathroom dampness is the key to keeping mould from growing. To do that, follow these steps:

• Firstly, after a bath or a shower, sponge water off the walls. That eliminates at least three-quarter’s of the moisture that supports mould and mildew growth.
• Secondly, run your bath fans during your bath or shower and for a half hour after, to flush out moisture. Chose a fan that has a built in timer to make this step automatic.
• Thirdly, if you have tiles, seal the grout lines annually with a standard grout sealer to waterproof them.