Frost Buildup In Attic

The more humid a house is the more frost you ll find in the attic.

Frost buildup in attic.

Attic ventilation is essential to prevent ice in roofs be certain that your roof ventilation is. Without proper attic ventilation in your home you could have a considerable amount of frost accumulate in your attic during the cold winter months. It is a serious problem because the frost turns into water as it dries out and this water will then leak into the home rot out the roof and joists and cause mold to grow. Left unchecked frost in an attic can lead to serious mold and decay a patch of frost here and there on the tips of roofing nails poking through the sheathing for instance probably isn t a cause for alarm.

This frost is the result of warm air rising from the living areas underneath. When the outside temperature rises again the frost thaws water collects and can leak into your house. How to prevent frost in the attic frost comes from air leaks. What causes ice in attics.

High humidity in homes first of all if the relative humidity of air in your home is too high work to lower it. I ve blogged about attic air. When moisture gets into the attic it condenses on the roof sheathing in the form of frost. 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.

During winter conditions attic frost is a problem associated with attic bypasses. That s about it pretty simple. More indoor humidity more frost in the attic. To start frost accumulates when moisture laden air from the house gets into the attic.

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. On dec 17 2010.