HUMIDITY AND CONDENSATION

Humidity and Condensation

Condensation

Condensation occurs when water transforms from a liquid into vapour on a cold surface. As the temperature lowers, the air holds less water vapour.

Humidity

Humidity refers to the amount of moisture retained in the air. A certain amount of water and humidity is constantly present in all the air around us.

Relative Humidity

Humidity refers to the amount of moisture retained in the air. A certain amount of water and humidity is constantly present in all the air around us.

PREVENTION TECHNIQUES

Condensation Resistance
Consider installing Energy Efficient windows in your building, as they are less likely to collect condensation. Find ways to reduce the humidity indoors, which greatly contribute to window condensation

Shading
Humidity refers to the amount of moisture retained in the air. A certain amount of water and humidity is constantly present in all the air around us..

Curtains + Blinds
Ensure that your curtains and blinds do not prevent air flow around the window surfaces. Restriction of air flow around the window will increase condensation.

Relative Humidity
Windows located directly above a heat source are less susceptible to condensation. A higher temperature surrounding the window results in less condensation from collecting on or between the glass. Ensure that the heat source is not directly applied or in contact to the window, as it could cause the glass to crack or break.

HUMIDITY REDUCTION TIPS

• Disconnect humidifiers
• Store firewood outdoors
• For mechanical ventilation systems: always ensure that it’s turned on and running smoothly
• Protect your basement from any excess moisture to reduce humidity. Locate the gutters and drains around your home and secure them away from the house to avoid flooding
• Ensure that the your clothes dryer, bathroom and kitchen fans vent to the exterior of the house/building

CONDENSATION QUESTIONS

What Causes Exterior Condensation?
Exterior condensation occurs when moist air comes into contact with a cold surface -when the dew point in the air is higher than that of the glass window. Typically, this often occurs during the spring and fall, when a cool night follows a warm day.

What Causes Condensation on the Inside Glass of Windows?
Excess humidity indoors can cause condensation to occur on the coldest surface within that room – most commonly, it’s the window glass. The warmer the air is, the more moisture it can retain and therefore increasing the humidity in that room.

Do Windows Cause Condensation?
Windows do not cause condensation, but external sources such as the humidity and air flow can make an impact. Replace drafty windows and doors to reduce the amount of air flow in and out of the building to maintain the optimal amount of humidity in your home.