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LeafGuard Iowa

Attic Frost – A Danger Sign

11 February 2019

Air Leakage is the #1 Problem

During winter conditions, attic frost is a problem. The frost is a direct result of conditioned air leaking out of your home. When the warm air from inside the home escapes, traveling up through the bypasses and joints. The moisture condenses on the roof boards and rafters, forming frost.


Frost in attic from heat escaping home.
Frost forms in attics when warm, humid air accumulates and condenses on the underside of your roof sheathing.


When this happens and the outside temperature begins to rise, the attic frost thaws causing water to collect. The water can lead to mold on the roof decking, wet insulation, and find its way back into the home resulting in water stains on the ceilings.


One sign of attic frost can be stains on the ceilings of your home.
One sign of attic frost can be stains on the ceilings of your home.


As we all know, Iowa winter weather can change in a heartbeat. It can be below zero one day and above 40˚F the next creating a vicious freeze-thaw cycle. If your home is not properly air sealed this can cause serious damage over time.

Is your home experiencing attic frost? Contact Home Solutions of Iowa today. Our thoroughly trained energy expert will come to your home and accurately identify and locate the causes of the troublesome areas within your home. We will explain to you exactly what is causing your issues, and exactly what we will do to correct these problems. 515-999-2896


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