Frost In Attic In Winter

This winter warmer dryer weather has seen the return of more normal attic conditions with significant frost seen only in problematic attics.

Frost in attic in winter.

To start frost accumulates when moisture laden air from the house gets into the attic. Frost and ice forms in attics when warm humid air accumulates and condenses on the underside of your roof sheathing. I ve blogged about attic air. When moisture gets into the attic it condenses on the roof sheathing in the.

When the outside temperature rises again the frost thaws water collects and can leak into your house. When moisture gets into the attic it condenses on the roof sheathing in the form of frost. House pressure affects. Exhaust them with turbine vents.

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. The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic. The more humid a house is the more frost you ll find in the attic.

During winter conditions attic frost is a problem associated with attic bypasses. More indoor humidity more frost in the attic. To start frost accumulates when moisture laden air from the house gets into the attic. Frost itself doesn t do any damage but once it melts things get wet and then damage occurs.

Ventilation is not the way to fix frost in the attic. Depending on the temperature and the insolation ie. Frost gets into the attic from air leaks or attic bypasses. It s a problem known as attic rain warm moist air sneaks into the attic freezes during cold weather and then melts during warm.

Turned out the water was coming from ice melting in the attic. Ice frost and other condensation need to be removed from your attic. Bypasses are what allow moisture in the attic to begin with and this is what needs repair. Mold mildew or rot can occur.

The unusual amounts of frost last year likely melted.