Frost Heaters In Attics

In cold climates that leads to ice dams.

Frost heaters in attics. Ceiling leak from condensation in the attic you can verify this by checking for frost in the attic rusty nails or water staining on the roof sheathing. When the outside temperature rises again the frost thaws water collects and can leak into your house. That s about it pretty simple. When the moisture gets into the attic it condenses on the roof.

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. Over that third unit from the left there s little heat getting into the attic as evidenced by the unmelted snow. Frost gets into the attic from air leaks or attic bypasses. To start frost shows up in the attic when moisture laden air from the house gets into the attic.

During winter conditions attic frost is a problem associated with attic bypasses. I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks. Over the other units enough heat escapes into the attics to melt most of the snow. Frosty roof deck nails and sidewall.

Frost and ice forms in attics when warm humid air accumulates and condenses on the underside of your roof sheathing. Check out my post on moldy attics for some.