Frost In The Attic Information

It should to a degree.

Frost in the attic information.

Frost accumulates in attics when moisture laden air from the house gets up there when it s cold. Melting frost can lead to deteriorated roof sheathing mold on the roof sheathing wet insulation and water stains on the ceilings. Bypasses are what allow moisture in the attic to begin with and this is what needs repair. That s about it pretty simple.

The straight forward answer is that a little frost seen in a canadian attic in the dead of winter is nothing to panic about. The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic. Sticking my head into hundreds of attics every year i see lots where. Houses with full home humidity systems are at risk for attic frost if the home s level of humidity is excessive.

Remember the last hot and humid day you were sitting outside drinking a cold beer iced tea soda or glass of ice water. Ventilation is not the way to fix frost in the attic. Full home humidity systems. Frost gets into the attic from air leaks or attic bypasses.

Air thus heat and water vapor leaking through the ceiling assembly will make this worse as will inadequate ventilation. I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks. Check out my post on moldy attics for some. Frost on nails in attic spaces may frighten you.

Inadequate attic air sealing. You re seeing frost where cold air is entering your attic space and cooling nearby surfaces to below the dew point. It s important to realize frost is in your attic for a few reasons. Once this occurs it compresses to form frost.

When moisture gets into the attic it condenses on the roof sheathing in the form of frost. How does the air get there. Frost itself doesn t do any damage but once it melts things get wet and then damage occurs. Frost begins to compile when moist air travels to a home s attic.

When the moisture gets into the attic it condenses on the roof.