Frost In The Attic Information

When moisture gets into the attic it condenses on the roof sheathing in the form of frost.

Frost in the attic information. Bypasses are what allow moisture in the attic to begin with and this is what needs repair. Full home humidity systems. How does the air get there. Houses with full home humidity systems are at risk for attic frost if the home s level of humidity is excessive.

When the moisture gets into the attic it condenses on the roof. Frost gets into the attic from air leaks or attic bypasses. Remember the last hot and humid day you were sitting outside drinking a cold beer iced tea soda or glass of ice water. Inadequate attic air sealing.

Frost accumulates in attics when moisture laden air from the house gets up there when it s cold. The outside of the can or glass had drops of. Frost on nails is frozen condensation. Once this occurs it compresses to form frost.

That s about it pretty simple. Sticking my head into hundreds of attics every year i see lots where. Frost on nails in attic spaces may frighten you. The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic.

Melting frost can lead to deteriorated roof sheathing mold on the roof sheathing wet insulation and water stains on the ceilings. Ventilation is not the way to fix frost in the attic. Lack of attic air sealing also allows frost to form as warm air penetrating into the attic causes moisture to condense on chilly surfaces. Frost begins to compile when moist air travels to a home s attic.

It s important to realize frost is in your attic for a few reasons. Check out my post on moldy attics for some. I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks. It should to a degree.

Air thus heat and water vapor leaking through the ceiling assembly will make this worse as will inadequate ventilation.