Frost In Attic In Winter

When moisture gets into the attic it condenses on the roof sheathing in the form of frost.

Frost in attic in winter.

During winter conditions attic frost is a problem associated with attic bypasses. The nails that you see in your attic get as cold as the outdoor temperature. To start frost accumulates when moisture laden air from the. This post is largely a re blog of my last post on attic frost but that was from 2013 and it s time for a reminder about all of this.

This winter warmer dryer weather has seen the return of more normal attic conditions with significant frost seen only in problematic attics. When the outside temperature rises again the frost thaws water collects and can leak into your house. To start frost accumulates when moisture laden air from the house gets into the attic. That s about it pretty simple.

Ice frost and water in an attic condensation new construction text. This is why you see the frost. This post is largely a re blog of my last post on attic frost but that was from 2013 and it s time for a reminder about all of this. Frost accumulates in attics when moisture laden air from the house gets up there when it s cold.

The air in the attic has water in it and it condenses on the cold metal. This exact same process is happening in your attic during extreme cold weather. A point often overlooked is that since it s winter the water freezes on the cold nails. 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 covering itself is the problem.

Last winter i noticed condensation and water droplets on the nails that stick through the roof into the attic. Why is there ice in my roof. When moisture gets into the attic it condenses on the roof sheathing in the form of frost. That s about it pretty simple.

The resulting thick layer of frost remained for several weeks until the weather warmed or a reasonable layer of snow covered the roofs to provide some insulation from the very cold exterior temperatures. When warm air from inside the house escapes traveling up through the bypasses the moisture condenses on the roof boards and rafters where the frost can form. Boxes stored in the attic were sometimes wet. At times there was ice and frost on the nails.

This post is largely a re blog of my last post on attic frost but that was from 2013 and it s time for a reminder about all of this. To start frost accumulates when moisture laden air from the house gets into the attic.