How does humid air get from our house and into the attic.
Frost in attic space.
Lots of ways many of which are small is difficult to detect.
When the outside temperature rises again the frost thaws water collects and can leak into your house.
Frost in your attic space is a sign that warm humid air is somehow getting into your attic space.
Melting frost can lead to the deteriorated roof sheathing mold on the roof sheathing wet insulation and water stains on the ceilings.
While bypasses are certainly the most common cause of frost there are other ways it can happen and these are much more obvious.
When moisture gets into the attic it condenses on the roof sheathing in the form of frost.
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 and ice forms in attics when warm humid air accumulates and condenses on the underside of your roof sheathing.
Can sun get to the roof you will have either frost or water collecting.
Depending on the temperature and the insolation ie.
Frost itself doesn t do any damage but once it melts things get wet and then damage occurs.
During winter conditions attic frost is a problem associated with attic bypasses.
The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic.
When the moisture gets into the attic it condenses on the roof sheathing in the form of frost.