Frost In Attic Space

When the moisture gets into the attic it condenses on the roof.

Frost in attic space.

Frost in your attic space is a sign that warm humid air is somehow getting into your attic space. When the outside temperature rises again the frost thaws water collects and can leak into. Frost gets into the attic from air leaks or attic bypasses. In order to eliminate frost build up in the attic space we have to understand what causes it in the first place.

That s about it pretty simple. Should i do anything about my attic ventilation. Check out my post on moldy attics for some. That s about it pretty simple.

This post is largely a re blog of my last post on attic frost but that was from 2013 and it s time for a reminder about all of this. If the attic has blown in cellulose check to see if there is a vapor barrier and confirm the cellulose insulation is spread evenly throughout the attic floor. Why is there ice in my 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.

Attics with pull down attic stairs should have attic stair insulation covers installed. The final step is attic ventilation. I ve blogged about attic air leaks many times and i ve shared photos of attic air leaks. When a warm sunny day arrives after a long cold stretch and it seems like you have a roof leak when there isn t a cloud in the sky it s probably attic icing otherwise known as ice dams or ice damming and the surprising thing is that it s very unlikely that the roof covering itself is the problem.

Since our minnesota winters are usually dry the only other source of humid air is your living space. Common causes of attic frost. Frost accumulates in attics when moisture laden air from the house gets up there when it s cold. When moisture gets into the attic it condenses on the roof sheathing in the form of frost.

Though attics are typically hot and dry a leaky roof or pipe condensation or severe weather can cause water to enter your attic. How to dry out an attic.