Inside old house web.
Frost inside my attic.
Frost on nails is frozen condensation.
Water is bad when it gets inside your house.
There was also frost on the west wall on the north side of the dormer where the sun doesn t get to it this time of year.
The rafters are exposed.
Frost in your attic space is a sign that warm humid air is somehow getting into your attic space.
Since our minnesota winters are usually dry the only other source of humid air is your living space.
During winter conditions attic frost is a problem associated with attic bypasses.
There is no snow on the roof.
Common causes of attic frost.
Frost gets into the attic from air leaks or attic bypasses.
Attic insulation is in the floor of the attic rather than the roof.
Frost on nails in attic spaces may frighten you.
Common problems and solutions.
The homeowner said last week there were icicles hanging off the nails inside the attic.
In order to eliminate frost build up in the attic space we have to understand what causes it in the first place.
I get endless questions about frost in the attic.
I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks.
Remember the last hot and humid day you were sitting outside drinking a cold beer iced tea soda or glass of ice water.
When the outside temperature rises again the frost thaws water collects and can leak into.
It should to a degree.
If it is anywhere other than the sink toilet tub or washer it is going to cause problems.
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.
The outside of the can or glass had drops of.