Why is there frost in my attic? / Green Building & Sustainable Home Renovation Information & Advice

...ing. Why is there frost on my house windows? Warm humid air meeting a cold surface will leave behind condensation which can be hard to stop, and in some cases it will turn to ice. This is particularly noticeable during periods of extreme cold, made worse by high indoor humidity and lower-quality windows. Winterizing y...

Frost in attics: why is there ice in my roof?  When a warm sunny day arrives after a long cold stretch and it seems like you have a roof leak when there isn't a cloud in the sky, it's probably Attic Icing, otherwise known as Ice Dams or Ice Damming, and the surprising thing is that it's very unlikely that the roof cove...