Frost Inside My Attic

Frost in the attic comes from the house.

Frost inside my 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. More indoor humidity more frost in the attic. I ve blogged about attic air. Frost in your attic space is a sign that warm humid air is somehow getting into your attic space.

During winter there are usually three sources of humidity in an attic. House pressure affects. Left unchecked frost in an attic can lead to serious mold and decay. When the weather warms up the frost will become water droplets and evaporate harmlessly.

Warm air holds a lot of. 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. During winter conditions attic frost is a problem associated with attic bypasses. The warm air you are paying for to heat your home is leaking into the attic because your house is not sealed from the attic.

Since our minnesota winters are usually dry the only other source of humid air is your living space. 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. When the outside temperature rises again the frost thaws water collects and can leak into your house. Frost gets into the attic from air leaks or attic bypasses.

The more humid a house is the more frost you ll find in the attic. 1 a leak 2 air infiltration from the living spaces and 3 incorrect venting of kitchen bathroom washer drier or plumbing vents. Lower the humidity in the house increase air flow through attic. The insulation added should have like the homeowner stated created the significant variance in heated living quarter temperatures to the unheated attic temperatures.

How to prevent frost in the attic frost comes from air leaks. The internal humidity conditions contribute to the internal moisture frost conditions.