A well ventilated home is drier healthier and more comfortable.
Frost on roof in attic.
Mold mildew or rot can occur.
When the weather warms up the frost will become water droplets and evaporate harmlessly.
The frost itself doesn t do any damage but once it melts things get wet which is when the damage.
Can sun get to the roof you will have either frost or water collecting.
During winter conditions attic frost is a problem associated with attic bypasses.
When the outside temperature rises again the frost thaws water collects and can leak into your house.
Ice frost and other condensation need to be removed from your attic.
When warm air from inside the house escapes traveling up through the bypasses the moisture condenses on the roof boards and rafters where the frost can form.
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.
When the moisture gets into the attic it condenses on the roof sheathing in the form of frost.
Well placed windows doors and other openings allow air to circulate without creating.
Frost and ice forms in attics when warm humid air accumulates and condenses on the underside of your roof sheathing.
About california ventilation building codes.