When the outside temperature rises again the frost thaws water collects and can leak into your house.
Frost buildup in attic.
I ve blogged about attic air.
On dec 17 2010.
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.
When moisture gets into the attic it condenses on the roof sheathing in the form of frost.
Without proper attic ventilation in your home you could have a considerable amount of frost accumulate in your attic during the cold winter months.
The more humid a house is the more frost you ll find in the attic.
Attic ventilation is essential to prevent ice in roofs be certain that your roof ventilation is.
To start frost accumulates when moisture laden air from the house gets into the attic.
During winter conditions attic frost is a problem associated with attic bypasses.
House pressure affects.
Frost gets into the attic from air leaks or attic bypasses.
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.
That s about it pretty simple.
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.
This frost is the result of warm air rising from the living areas underneath.
More indoor humidity more frost in the attic.
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.