Frost In The Attic Information

Frost itself doesn t do any damage but once it melts things get wet and then damage occurs.

Frost in the attic information.

Frost begins to compile when moist air travels to a home s attic. Full home humidity systems. Inadequate attic air sealing. Frost accumulates in attics when moisture laden air from the house gets up there when it s cold.

Frost on nails in attic spaces may frighten you. Ventilation is not the way to fix frost in the attic. Sticking my head into hundreds of attics every year i see lots where. Check out my post on moldy attics for some.

Frost gets into the attic from air leaks or attic bypasses. I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks. You re seeing frost where cold air is entering your attic space and cooling nearby surfaces to below the dew point. Frost on nails is frozen condensation.

Houses with full home humidity systems are at risk for attic frost if the home s level of humidity is excessive. The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic. It should to a degree. The outside of the can or glass had drops of.

Bypasses are what allow moisture in the attic to begin with and this is what needs repair. The straight forward answer is that a little frost seen in a canadian attic in the dead of winter is nothing to panic about. Lack of attic air sealing also allows frost to form as warm air penetrating into the attic causes moisture to condense on chilly surfaces. How does the air get there.

When moisture gets into the attic it condenses on the roof sheathing in the form of frost. Air thus heat and water vapor leaking through the ceiling assembly will make this worse as will inadequate ventilation. That s about it pretty simple. When the moisture gets into the attic it condenses on the roof.

Melting frost can lead to deteriorated roof sheathing mold on the roof sheathing wet insulation and water stains on the ceilings.