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.
The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic.
I ve blogged about attic air.
Ventilation is not the way to fix frost in the attic.
Ice frost and other condensation need to be removed from your attic.
House pressure affects.
When moisture gets into the attic it condenses on the roof sheathing in the form of frost.
Bypasses are what allow moisture in the attic to begin with and this is what needs repair.
It s a problem known as attic rain warm moist air sneaks into the attic freezes during cold weather and then melts during warm.
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.
To start frost accumulates when moisture laden air from the house gets into the attic.
How to prevent frost in the attic frost comes from air leaks.
Frost itself doesn t do any damage but once it melts things get wet and then damage occurs.
When moisture gets into the attic it condenses on the roof sheathing in the.
Frost gets into the attic from air leaks or attic bypasses.
That s about it pretty simple.
Depending on the temperature and the insolation ie.
Mold mildew or rot can occur.
Can sun get to the roof you will have either frost or water collecting.
Exhaust them with turbine vents.
More indoor humidity more frost in the attic.
Turned out the water was coming from ice melting in the attic.
Frost and ice forms in attics when warm humid air accumulates and condenses on the underside of your roof sheathing.
When the outside temperature rises again the frost thaws water collects and can leak into your house.
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.