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