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How to avoid condensation in a bathroom?

How to avoid condensation in a bathroom?



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A damp room par excellence, the bathroom is often the ideal benchmark for mold and other fungi. The water vapor released in the room associated with a cold wall forms condensation. This phenomenon is at the origin of many humidity problems: bad odors, dirty joints, fungi ... To fight them effectively, only one watchword: ventilate. Easier said than done ? We tell you all about the solutions that exist to properly ventilate your bathroom ... with or without a window!
  1. Natural ventilation, a simple solution against condensation
  2. Ventilation by thermal draft, an essential technique and easy to set up for good air circulation
  3. Mechanical ventilation, an effective device to combat humidity in the bathroom
  4. Choose suitable materials

1. Natural ventilation, a simple solution against condensation

Adepts of long baths or supporters of timed showers, we have all noticed: hot water vapor, on contact with a cold surface, forms condensation. This is a very common phenomenon in humid rooms such as the bathroom. How to limit its appearance without having to give up our favorite moment of relaxation? The first solution, if you can, is to ventilate your bathroom to remove moisture after each shower or bath. A room that is too humid is the ideal place for bad odors to settle and for mold to form, which we absolutely want to avoid. To keep the environment healthy, be sure to ventilate your humid rooms for at least 15 minutes a day. Don't have a window in your bathroom? Use the other rooms to create drafts throughout your home. When you ventilate them, just remember to open the bathroom door to circulate the air. Very practical in summer, you will however avoid ventilating your rooms too much in winter, at the risk of ending up with an excessive heating bill. In this case, you will favor small jobs that will allow you, on a daily basis, to reduce the humidity level of your home. This will prove to be much cheaper in the medium and long term.

© Pinterest

2. Ventilation by thermal draft, an essential technique and easy to set up for good air circulation

Ventilation by thermal draft consists in using the natural movement of air: hot air is lighter than cold air, when the latter heats up, it rises. To properly ventilate your bathroom, you can therefore install two ventilation grilles: an air inlet at the bottom and an air outlet at the top. The air will then circulate more easily in the room. This natural ventilation will prevent the accumulation of moisture and the appearance of bad smells. This thermal draft system has many advantages: it is silent, requires little maintenance and its use costs absolutely nothing. You can also plan the bottom of your door to create a cold air inlet from the bottom. Last advice to prevent moisture from accumulating in your bathroom: leave the door open overnight and directly after taking your shower or bath, in order to evacuate water vapor and fogging.

© Lana Kenney

3. Mechanical ventilation, an effective device to combat humidity in the bathroom

A normal humidity level in a healthy home is between 40 and 65%. If your home is often above this rate, we strongly recommend that you have a CMV installed there that will help you effectively combat humidity in the home. Mechanical ventilation, also called VMC (controlled mechanical ventilation), helps manage air circulation. It is the most effective solution for combating humidity in your bathroom and in your home in general. A VMC, unlike natural ventilation, regulates the circulation of air. There are two types: single-flow and double-flow CMV. Both work on the same system: air inlets are placed in the living rooms and exhaust vents exhaust air from the humid rooms to the outside. An inverted fan, operating with a small motor, controls air circulation. Unlike a single-flow VMC, the double-flow VMC incorporates a heat exchanger that preheats the air that enters. This system has been designed to limit energy waste. If installing a CMV is an effective solution to ventilate your bathroom when you don't have a window, it requires regular maintenance to function properly. So don't forget to clean it well! A new system, called VMI (mechanical ventilation by insufflation) works on the reverse principle. A small pump sucks in the outside air, filters it and heats it before blowing it into your home. This new incoming pure air repels the hot air already present and expels it through small ventilation grilles located above the windows. This system is a little more expensive than a conventional VMC but is particularly interesting in town and in old dwellings, since it makes it possible to filter the outside air of all fine particles and allergens while expelling the humidity present. in the House. The small renovations that the installation of a CMV or a VMI implies are really essential, especially if you do not have a window in your bathroom. These two mechanical solutions do not, however, exempt you from opening your windows regularly in order to ventilate your house directly and to circulate fresh air.

© Dea Vita

4. Choose suitable materials

One can avoid the formation of mold on the walls of the bathroom by choosing the right paints. For damp rooms, use an appropriate acrylic paint. It has fungicidal properties, that is to say capable of destroying fungi. Some lime plasters, such as Tadelakt, naturally have moisture-regulating properties and are therefore particularly suitable for damp rooms. We even cover the shower walls! It is also a very trendy material that will give a very Zen atmosphere to your bathroom. You will also ensure that all the materials present in your bathroom, from the floor to the worktop via your wall covering, are water-repellent, that is to say that they have received an anti-humidity treatment. Wooden worktops and paneling must therefore be treated with a special product. The same applies to all natural stone surfaces which could, moreover, be damaged by contact with water. The seals of your bathtub or your shower tray are essential to guarantee their good sealing. Unfortunately, these areas are also very conducive to the development of fungi and molds, precisely because of their permanent contact with water. It is therefore necessary to maintain them regularly and remember to check their condition. Damaged joints allow water to pass through and can cause moisture problems. Always make sure to use silicone seals in the bathroom, but don't hesitate to think outside the box using colored seals. They will give a touch of pep to your bathroom! Finally, good ventilation and good air circulation, although essential, are not enough to maintain a healthy bathroom. It is indeed necessary to maintain this part regularly, precisely because of the high humidity level to which it is subjected. So take care of your bathroom and it will make you feel good! A healthy bathroom will indeed offer you moments of relaxation appreciated after a long day…

© Dea Vita The seals of our bathtub or our shower tray are essential to guarantee their good sealing. To prevent mold from settling in these areas, remember to check that they are in good condition and remake them if this is not the case. Damaged joints allow water to pass through and can cause moisture problems.