Frost In Attic In Winter

Boxes stored in the attic were sometimes wet.

Frost in attic in winter.

My wife ali and i bought an old house 18 months ago. Ice frost and water in an attic condensation new construction text. When the moisture gets into the attic it condenses on the roof. When moisture gets into the attic it condenses on the roof sheathing in the form of 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. During winter conditions attic frost is a problem associated with attic bypasses. That s about it pretty simple. To start frost accumulates when moisture laden air from the house gets into the attic.

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. When moisture gets into the attic it condenses on the roof sheathing in the form of frost. This winter warmer dryer weather has seen the return of more normal attic conditions with significant frost seen only in problematic attics. To start frost accumulates when moisture laden air from the.

This is why you see the frost. To start frost accumulates when moisture laden air from the house gets into the attic. The air in the attic has water in it and it condenses on the cold metal. Frost accumulates in attics when moisture laden air from the house gets up there when it s cold.

Last winter i noticed condensation and water droplets on the nails that stick through the roof into the attic. 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. This exact same process is happening in your attic during extreme cold weather. That s about it pretty simple.

That s about it pretty simple. A point often overlooked is that since it s winter the water freezes on the cold nails. The nails that you see in your attic get as cold as the outdoor temperature. Why is there ice in my roof.

At times there was ice and frost on the 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.