Bathroom Cleanliness: Preventing, Identifying and Removing Mould Growth

Bathroom mould is almost every homeowner's nightmare. It causes unsightly black stains on tiles, walls, floors and caulking. And it poses a health hazard, triggering:

  • Allergic reactions
  • Infections
  • Cancer
  • Mental impairment
  • Organ failure

Of course, many moulds will not cause extreme symptos in most people. However, people with weakened immune systems remain especially vulnerable. These people include babies, the elderly and people with asthma. If someone in your household falls sick on a regular basis, mould may be the culprit. 

Worse still, mould spreadsrapidly. One spore can quickly turn into trillions, which is why preventing and eliminating mould growth should be one of your top priorities.

Where to Find Mould

The first place you should look for mould is your bathroom. Its constant humidity creates the perfect environment for mould growth. Check the following areas for mould stains: Under the sink Around wall tiles Along caulking Behind wallpaper Under carpeting Many remodelling homeowners may even find mould behind tiles and under the tub. Consequently, you should leave no corner or crevice unsearched when you inspect for mould. Once you find mould, you can take stepsto remove it. 

How to Remove Mould Growth

If you've moved into a home with an existing problem or have failed to protect against mould growth, you'll want to do everything you can to remove the mould as quickly as possible. The following stepscan help you remove mould in its early stages:


  • Open windows to dry the mould and provide fresh air
  • Seal the doors and HVAC ventsto prevent the transfer of sporesto other areas of the house
  • Remove and replace any sealants or caulking that have mould growth
  • Scrub the room with mould-killing products like hydrogen peroxide, vinegar and bleach
  • If you suspect that mould has progressed to dangerous levels, you may need to hire a professional team to remove it.

Considering a bathroom remodel? Remember to eliminate all mould traces before bringing in the new materials. This will help avoid future contamination.

How to Prevent Mould Growth

Once you've removed the mould and restored your home to its pristine condition, you'll want to take extra precautionsto avoid future reappearances.

1. Avoid and Remove Moisture

You probably know that mould needs moisture and humidity to thrive-that's why the bathroom tendsto grow the most mould. Fortunately, you can cut some of the moisture by using a squeegee to remove water from walls, mirrors and the ceiling after a
shower. Also, run the bathroom fans during your shower or bath and for 30 minutes after. Allow natural sunlight to flood the room to help evaporate the water vapour. To prevent mould growth house-wide, keep an eye on humidity levels. A good range is between 30 and 50%.

2. Eliminate Hiding Places

The fewer items you have in your bathtub or shower, the better. Shampoo and conditioner bottles, washcloths, sponges, razors
and body washes may become a hiding place for mould to grow.
If you must keep these itemsin the bath, dry them after every shower or bath.

3. Use Sealants

Waterproofing plays a significant role in preventing mould growth. Hire a professional to caulk along the edges of the tub and toseal the grout between tiles. This will stop water from building up in areas you don't immediately see.

With these steps, you can create a safe and healthy environment for you and your loved ones. If you have further questions about waterproofing and sealing your bathroom, consider asking a professional sealer for advice. He or she can determine the most cost efficient techniques and solutionsfor preventing mould growth.