Remember the last hot and humid day you were sitting outside drinking a cold beer iced tea soda or glass of ice water.
Frost in the attic information.
It should to a degree.
You re seeing frost where cold air is entering your attic space and cooling nearby surfaces to below the dew point.
Inadequate attic air sealing.
Once this occurs it compresses to form frost.
Full home humidity systems.
The outside of the can or glass had drops of.
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 itself doesn t do any damage but once it melts things get wet and then damage occurs.
Bypasses are what allow moisture in the attic to begin with and this is what needs repair.
When moisture gets into the attic it condenses on the roof sheathing in the form of frost.
Ventilation is not the way to fix frost in the attic.
Frost gets into the attic from air leaks or attic bypasses.
Sticking my head into hundreds of attics every year i see lots where.
Frost on nails is frozen condensation.
Air thus heat and water vapor leaking through the ceiling assembly will make this worse as will inadequate ventilation.
The straight forward answer is that a little frost seen in a canadian attic in the dead of winter is nothing to panic about.
Frost begins to compile when moist air travels to a home s attic.
The fix for frost in the attic is sealing attic bypasses these are passageways from the conditioned household space to the attic.
It s important to realize frost is in your attic for a few reasons.
When the moisture gets into the attic it condenses on the roof.
Check out my post on moldy attics for some.
Frost accumulates in attics when moisture laden air from the house gets up there when it s cold.
That s about it pretty simple.
Houses with full home humidity systems are at risk for attic frost if the home s level of humidity is excessive.
Frost on nails in attic spaces may frighten you.