When moisture gets into the attic it condenses on the roof sheathing in the form of frost.
I have frost in my attic.
Even in newer homes some frost at various times of the year is nothing to worry about.
Ice frost and water in an attic condensation new construction text.
Frost and ice forms in attics when warm humid air accumulates and condenses on the underside of your roof sheathing.
Frost gets into the attic from air leaks or attic bypasses.
Left unchecked frost in an attic can lead to serious mold and decay.
When the weather warms up the frost will become water droplets and evaporate harmlessly.
Melting frost can lead to deteriorated roof sheathing mold on the roof sheathing wet insulation and water stains on the ceilings.
My wife ali and i bought an old house 18 months ago.
I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks.
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.
Frost may seem harmless when everything is cold and frozen but as soon as the sun shines and the attic temperature rises frost can become a danger to your home.
Check out my post on moldy attics for some.
Boxes stored in the attic were sometimes wet.
If it doesn t evaporate it can leak into your home s structure and cause water damage that may then lead to mold growth mildew poor indoor air quality rotting wood and other serious problems.
Last winter i noticed condensation and water droplets on the nails that stick through the roof into the attic.
Last year virtually every attic that i looked into for the first couple of months of winter had significant.
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.
At times there was ice and frost on the nails.
House pressure affects.
Frost itself doesn t do any damage but once it melts things get wet and then damage occurs.
I ve blogged about attic air.
How to prevent frost in the attic frost comes from air leaks.