Condensation is the change of the physical state of matter from GAS into LIQUID.
Everyday things like cooking, washing, bathing and even breathing cause moisture, which is released into the air. The air can only hold a certain amount of water vapour – the warmer it is, the more it can hold. If this is cooled by contact with a cold surface such as mirror, a window or even a wall, the water vapour will turn into droplets of water – condensation.
Mold may begin growing indoors when mold spores land on surfaces that are wet. There are many types of mold, and none of them will grow without water or moisture.
Mold could grow surprisingly fast in your home in cold climate area even like Edmonton.
In winter time, normal Edmonton house will experience a 40 even 50 celsius temperature difference ouside and inside of your house. If the house is not properly insulated, it is just matter of time when you will get mold grow.
You could not see behind the drywall if it is well insulated or not. With the help of the thermal imaging picture, it helps you actually seeing it not just guessing without take your drywall apart.