To start frost accumulates when moisture laden air from the house gets into the attic.
Frost in my attic.
As a follow up to my frost in attic condition.
Frost gets into the attic from air leaks or attic bypasses.
But anything more than an occasional patch is.
Frost gets into the attic from air leaks or attic bypasses.
Common causes of attic frost.
This post is largely a re blog of my last post on attic frost but that was from 2013 and it s time for a reminder about all of this.
I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks.
When the weather warms up the frost will become water droplets and evaporate harmlessly.
Why is there ice in my roof.
Had an energy audit.
Apparently the hvac people who installed my system did a very poor job.
Frost in your attic space is a sign that warm humid air is somehow getting into your attic space.
It should to a degree.
Remember the last hot and humid day you were sitting outside drinking a cold beer iced tea soda or glass of ice water.
I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks.
Since our minnesota winters are usually dry the only other source of humid air is your living space.
When moisture gets into the attic it condenses on the roof sheathing in the form of frost.
Check out my post on moldy attics for some.
Had the ducts repaired and auditor coming back to perform duct blast test.
When a warm sunny day arrives after a long cold stretch and it seems like you have a roof leak when there isn t a cloud in the sky it s probably attic icing otherwise known as ice dams or ice damming and the surprising thing is that it s very unlikely that the roof covering itself is the problem.
Check out my post on moldy attics for some.
Left unchecked frost in an attic can lead to serious mold and decay.
In order to eliminate frost build up in the attic space we have to understand what causes it in the first place.
A patch of frost here and there on the tips of roofing nails poking through the sheathing for instance probably isn t a cause for alarm.
That s about it pretty simple.
It s important to realize frost is in your attic for a few reasons.
Frost on nails is frozen condensation.
Frost on nails in attic spaces may frighten you.
During winter conditions attic frost is a problem associated with attic bypasses.