My Attic Has Frost

The exhaust from the rooms below gets released into the open air in the attic if not sealed properly causing lots of moisture in the air.

My attic has frost.

That is not a solution. So the short answer is yes this is something you should fix. Insulation is irrelevant when your attic bypasses are left open for warm air to pour into the attic. 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. Where the water comes from. What ends up as frost in the attic starts as water somewhere else in the house. Many people s first instinct when they notice frost in the attic is to add insulation.

When the moisture gets into the attic it condenses on the roof. Left unchecked moisture in the attic can lead to serious mold and decay expensive to repair and potentially unhealthy for anyone in the house. It can lead to mold wet insulation and find a way back into the home resulting in water stains on the ceiling. If it s due to air infiltration from the living space then air sealing should be the first thing you do not the last.

To start frost shows up in the attic when moisture laden air from the house gets into the attic. That s about it pretty simple. A bathroom vent has been left to pump warm air into the attic. During winter conditions attic frost is a problem associated with attic bypasses.

Therefore my suggestion is that if one finds frost in the attic one first has to identify which of the three causes is contributing to the problem.