Many people choose condominiums for their security and convenience, but it is also true that problems with humidity and mold are more likely to occur. Understand the causes accurately and put effective countermeasures into practice.
Why is it said that condominiums tend to have high humidity?
There are three main reasons why humidity tends to build up in condominiums.
High airtightness but insufficient ventilation
In highly airtight condominiums, there is little air exchange between indoors and outdoors, so if the ventilation plan is inadequate, moisture cannot escape outside and will cause condensation and mold. However, with an appropriate ventilation plan, high airtightness itself is not a problem.
Fewer windows than detached houses
In condominiums without windows positioned diagonally across from each other, it is difficult to replace the air quickly. In such cases, using an air circulator as supplemental support becomes necessary.
Use of building materials with low moisture-regulating performance
Reinforced concrete and steel structures have lower moisture-regulating performance than wooden buildings. Wood has a natural ability to absorb and release moisture, but concrete does not.
What advantages do highly airtight condominiums offer?
The image of trapped humidity often comes first, but highly airtight condominiums offer many advantages.
- They make it easier to maintain room temperature and reduce heating and cooling costs
- They help block pollutants such as pollen, yellow dust, and PM2.5
- Planned ventilation can keep the indoor air clean at all times
- They help prevent condensation and slow the rate of building deterioration
What are the characteristics of rooms where humidity tends to build up?
- Reinforced concrete construction (especially in newer buildings, where moisture may still be released from the concrete)
- Exposed concrete finishes (without wall coverings that provide moisture control)
- Rooms with poor sunlight exposure (without the drying effect of sunlight)
- Layouts with poor airflow (such as field-shaped floor plans)
- Lower floors and the ground floor (more likely to take in moisture from the ground or basement)
- Properties located near rivers, lakes, or other bodies of water
13 effective ways to control humidity in condominiums
- Open two windows diagonally opposite each other for ventilation (as a guide, once an hour for 5 to 10 minutes)
- Run exhaust fans in wet areas intentionally (especially in the bathroom immediately after use)
- Use a dehumidifier or your air conditioner's dehumidifying mode (the effect improves when combined with an air circulator)
- Reduce temperature differences inside the home (open doors regularly to create a path for moisture to escape)
- Keep furniture at similar heights to secure paths for airflow
- Place furniture away from the walls (pay special attention to exterior walls, especially in corner units)
- Wipe condensation from bottom to top, then finish with alcohol
- Place dehumidifying agents in storage spaces (use stand-up, sheet, and hanger types according to the location)
- Use newspaper in damp areas (inside shoes, in shoe cabinets, and in closets)
- Use the bathroom exhaust fan when drying clothes indoors to prevent humidity from spreading through the room
- Organize closets regularly to maintain paths for airflow
- Do not place leather shoes on the bottom shelf of the shoe cabinet (the lowest shelf tends to collect the most moisture)
- Ventilate frequently when using humidifiers, houseplants, or other sources of water vapor
Related reading
- A complete guide to condominium waterproofing work, including types, costs, and how to choose a contractor
- What is modern interior style? Features by style and how to incorporate it
- Layout points for a comfortable living and dining space
Frequently Asked Questions (FAQ)
Q. What is the most effective way to prevent mold in a condominium?
Ventilation and humidity control are the foundation. Bathrooms, kitchens, and closets tend to trap moisture easily, so using exhaust fans and placing dehumidifying agents are especially effective.
Q. Are humidity countermeasures necessary even in highly airtight condominiums?
Yes. Even in a highly airtight unit, moisture will build up if the ventilation system is inadequate. Proper use of exhaust fans and regularly opening windows are important.
Q. What happens if condensation is left untreated?
Mold can develop around windows and on curtains, increasing the risk of health problems. Address it early with absorbent tape and regular wiping.
Q. Should lower floors be avoided because they are more humid?
They tend to have more moisture because they are closer to the ground, but the issue can be resolved with proper ventilation and dehumidification. They may also offer benefits such as garden access or pricing advantages, so they should be evaluated comprehensively.
