Frost In Attic North Side

In most cases rolled or batt insulation will have a vapor barrier already attached.

Frost in attic north side. When the moisture gets into the attic it condenses on the roof. If you re further baffled by frost forming on one side and not the others you re probably looking at the north side. As to the frost there are a few things you can check. A few years ago we had a lot of frost and a company came in and charged us 250 to spray the exhaust fan and duct to stop leakage.

How much frost should you have in an attic. In some cases frost will form on the northside of the attic sheathing and not the south. Upon inspection of the attic the entire north face of the attic had frost on the nails poking through and most of the decking boards. During the day as the sun is out in certain circumstances it will produce enough heat to warm the south side and allow it to thaw and evaporate moisture but the north side will still have frost as it does not get warm enough to cause evaporation.

During winter conditions attic frost is a problem associated with attic bypasses. 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. Condensation in the attic is a serious problem that must be addressed by homeowners. If left untreated it can damage critical structural elements of the home such as the trusses and rafters ruin insulation damage any stored belongings and lead to the formation of potentially toxic black mold.

Obviously the frost is caused by moisture in the attic air. That s about it pretty simple. When the outside temperature rises again the frost thaws water collects and can leak into your house. 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.

There is no snow on the roof. You can t fully eliminate that moisture but you can try to limit it. As seniors with medical conditions we are worried about mould. To start frost shows up in the attic when moisture laden air from the house gets into the attic.

The sun will sometimes warm the south side enough to thaw and evaporate moisture but leave it still coated on the north side again not a problem unless the ice starts to build up. On the vapor barrier the insulation should be labeled at least an r 30. We still have one area in the rafters between the bathroom and a walk in closet that has some frost.