Frost In The Attic Information

The frost itself doesn t do.

Frost in the attic information.

That s about it pretty simple. Frost gets into the attic from air leaks or attic bypasses. When moisture gets into the attic it condenses on the roof sheathing in the form of frost. I noticed that i have frost in my attic in the winter and that one of my 2 roof vents is forming condensation which is dripping onto the insulation.

Bypasses are what allow moisture in the attic to begin with and this is what needs repair. Full home humidity systems. When the outside temperature rises again the frost thaws water collects and can leak into. 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.

While bypasses are certainly the most common cause of frost there are other ways it can happen and these are much more. The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic. Cold weather climate winter lows of 25c. Lack of attic air sealing also allows frost to form as warm air penetrating into the attic causes moisture to condense on chilly surfaces.

This post is largely a re blog of my last post on attic frost but that was from 2013 and it s time for a reminder about all of this. Check out my post on moldy attics for some. When the moisture gets into the attic it condenses on the roof sheathing in the form of frost. To start frost accumulates when moisture laden air from the house gets into the attic.

Frost shows up in the attic when moisture laden air from the house gets into the attic. Inadequate attic air sealing. I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks. During winter conditions attic frost is a problem associated with attic bypasses.