Oriel Windows & Doors in Red Deer provides information on condensation and humidity and how quality windows and doors can help boost your home’s energy efficiency.
When water changes from it gas or water vapor form to a liquid form, you get condensation. Condensation occurs when the temperature of a surface is lower than the dew point of the air around it. This often happens when warmer air comes into contact with a cool surface like the side of a cold beverage. Also the natural cooling of the air itself can cause condensation – which is how rain and snow to form.
While energy efficient windows help control temperatures within your home, they can occasionally collect condensation on the exterior glass surface. Exterior condensation happens during periods of warm weather and high humidity near sunrise. Since energy efficient windows reduce the amount of heat that escapes to the outside (beneficial during cold weather), the exterior glass is cool enough to form condensation for a short time.
You can usually see exterior condensation during the following conditions:
Interior condensation happens when the indoor humidity of your home has a higher dew point than the temperature of the glass at the bottom of your window. If the temperature at the bottom of your window is below 0°C then frost forms
There are some simple steps you can take to reduce or even stop condensation from accumulating on your windows.
Condensation Resistance Techniques
A window manufacturer may use one of the following to reduce condensation:
Curtains or Blinds
Keep curtains, blinds, valances, and other interior window accessories from preventing air flow around the surface of the window. Restriction of air movement increases the chance of window condensation.
Hot Air Registers & Heaters
More heat is lost through windows (even energy-efficient ones) than adjacent walls. Windows with heat sources below them are less likely to form condensation. But take care to keep hot air from flowing directly onto the interior surface of the window as the thermal stress could cause the glass to break.
During colder months, humidity in your home is desirable for comfort, but non-energy efficient windows, doors, and skylights can collect condensation or frost. This not only obscures your view, but can lead to mould growth in the frames and on sashes. That’s why Oriel Windows & Doors depend on ENERGY STAR® products. ENERGY STAR® windows need a higher indoor humidity to form condensation, meaning you can keep your home comfortable without having to worry over condensation running your windows, doors, or skylights. We recommend installing ENERGY STAR® windows in your bathroom and kitchen since those areas of the home face higher humidity levels.