How to prevent frost in the attic frost comes from air leaks.
Frost inside my attic.
The insulation added should have like the homeowner stated created the significant variance in heated living quarter temperatures to the unheated attic temperatures.
Frost in your attic space is a sign that warm humid air is somehow getting into your attic space.
I ve blogged about attic air.
When the weather warms up the frost will become water droplets and evaporate harmlessly.
When the outside temperature rises again the frost thaws water collects and can leak into your house.
How does humid air get from our house and into the attic.
Since our minnesota winters are usually dry the only other source of humid air is your living space.
Lots of ways many of which are small is difficult to detect.
As a practising roofer and consultant i will note that any appearance of frost inside the attic especially if it is vented is a troubling sign.
Frost gets into the attic from air leaks or attic bypasses.
1 a leak 2 air infiltration from the living spaces and 3 incorrect venting of kitchen bathroom washer drier or plumbing vents.
The more humid a house is the more frost you ll find in 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.
Frost in the attic comes from the house.
At the present time here s how to stop the frost you re seeing in your attic.
Lower the humidity in the house increase air flow through attic.
The internal humidity conditions contribute to the internal moisture frost conditions.
More indoor humidity more frost in the attic.
During winter there are usually three sources of humidity in an attic.
During winter conditions attic frost is a problem associated with attic bypasses.
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.
