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How to Dehumidify a Bathroom – 11 Tips for Instant Results!

how to dehumidify a bathroom
Written by Jenny Molin

Steam deposits due to hot showers and frequent hand washing in the bathroom can make it quickly damp. This acquisition of moisture makes the bathroom super humid and leads to condensation on the surfaces. Constant moisture further leads to the formation of mold and also destroys the tiles and texture in the bathroom.

What Causes Humidity in a Bathroom?

Nearly every activity in the bathroom accumulates moisture – from washing your hands to flushing the toilet.  When humid air touches the cold surface, water vapors in the air get condensed and spread on the surface.

Poorly designed bathrooms with not enough ventilation trap the humid air inside which further leads to the formation of water droplets making the surfaces wet. This is especially common in small and constrained rooms. Good ventilation helps circulate air and avoids condensation of vapor to water droplets keeping the surfaces dry.

Why You Need to Control Humidity

Humidity control is an important part to ensure a safe and good functioning bathroom. Here are the reasons why you must consider controlling humidity.

  • Excess humidity causes the growth of mold, fungus, and many other harmful bacteria which can have adverse effects on human health especially for people suffering from respiratory problems.
  • Though tiles are water-resistant, there can be the formation of limescale marks on them due to the constant exposure to moisture.
  • It can even cause paint to peel off the walls and ceiling.
  • It may cause surface damage to the floor and walls.
  • It can also lead to the damage of wallpapers, decors, and curtains
  • It even leads to expensive repair work.
  • Wet floors can be slippery and not safe to walk

How to Dehumidify a Bathroom – Most Effective Ways

Dehumidify a Bathroom

1. Open Windows for the Steam to Escape Out and to Let Cool Air In

Proper ventilation is a basic step to follow in getting rid of humidity in the bathroom. Open the windows and doors of the bathroom as soon as you have a shower. In the case when the outside temperature is high, you can open the windows even while having the shower. This will let the hot air inside and minimizes the moisture of the bathroom.

When the bathroom doesn’t have a window keep its door open throughout the day. If you don’t follow the above basic steps, the humidity inside condenses once it touches the walls making the surfaces wet.

2. Use a Portable Bathroom Dehumidifier

When your bathroom doesn’t have a window, the best go-to option is using a dehumidifier. A dehumidifier draws the moist air and blows back dry air into the bathroom leaving behind the water extracted. This helps in a good reduction in the condensation process that takes place inside.

Consider factors such as room size and airflow rate before you buy a dehumidifier. A portable unit can be placed on the toilet seat, shower, or bathtub.

3. Switch on the Exhaust Fan While Having a Shower

A fast and cheap option is to install an exhaust fan to reduce humidity in the bathroom. The fan pulls the humid air outside which in turn reduces condensation inside.  Switch it on before you start your shower and 20 minutes after your shower.

When humidity levels are very high and always exist, go for a dehumidifier. Choose an exhaust fan when the humid levels exist for only a short period.

4. Use a Bathroom Heater

The process of condensation occurs only when the humid air touches the cold surfaces in the bathroom. Use a small bathroom heater to heat the walls of the room before you go for a shower. So, the steam that touches the hot surface will not condense and therefore there will not be any moisture on the walls, mirrors, and ceiling of the bathroom.

5. Don’t Keep Damp Items Inside

Some people often leave their used clothes, wet clothes, and towels inside the bathroom. These clothes will increase the level of condensation after every shower as soon as the humid air comes in contact with them. So, always keep your clothes outside, and don’t ever dry your wet towels inside the bathroom.

6. Prefer Double Glazed Windows

Windows with a single layer of glass are single glazed and with the double layer are double glazed. Generally, single glazed windows are more likely to be cold and increase the condensation process compared to double glazed windows. So always prefer double glazing for the windows of your bathroom.

7. Defogger for Mirrors

A simple piece of cloth can be used to wipe the fog on the mirror, but manually. A defogger keeps the mirror warm and reduces condensation on it automatically. There are inbuilt defogger mirrors available in the market. You can also buy a defogger separately when you don’t have an inbuilt one.

8. Keep Your Surfaces in the Bathroom Dry

Taking enough manual care is a no-cost option to dehumidify your bathroom. Use an old towel to wipe your walls, shower, taps, and floor to keep it as dry as possible and make it a habit. This would make sure that the walls and surfaces are not cold which avoids further condensation every time you use the bathroom.

9. Minimize the Time of  Your Showers

If you are not able to manage moisture in the bathroom, prefer taking shorter showers. Instead of bathing with piping hot water, consider warm or cold water. This will reduce the moisture in the air and also the condensation on the walls and surfaces.

10. Fill Your Bathtub With Cold Water Before Hot Water

When filling your bathtub or a bucker, make sure you fill cold water before hot water, this will reduce the steam that touches the surfaces and condenses further. This is a small trick and easy option to reduce humidity in the bathroom.

11. Say No to Carpets

Carpets inside the bathroom absorb moisture and turn into a cold surface that traps more steam which further condenses. They also take more time to dry. So, avoid carpets and go for throw rugs or linoleum.

About the author

Jenny Molin

Interior Design Artist

Hello, I’m Jenny. I’ve been an interior design artist by profession since my B.S. in Interior Design. I’m a minimalist and prefer to save space when choosing fixtures, sinks and fittings. My style tends to make the most out of the least amount of space. The idea behind every interior design project is unique and it reflects personal style, taste and tradition. I’ve learned more when working than I ever did while I was studying in college. I worked in more than 12 hundred households all across the US and got positive feedback. I’ve been working with FaucetsReviewed as one of the founding members and regularly contributing to the site via testing and reviewing various interior fittings and fixtures.

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