Frost On Roof In Attic

Why is there ice in my roof.

Frost on roof in attic. Once in the attic it warms the air over the. Without delay this air movement brings in drier outdoor air into the attic. My wife ali and i bought an old house 18 months ago. When moisture gets into the attic it condenses on the roof sheathing in the form of frost.

Because their ceiling isn t air sealed or insulated well enough to keep a lot of heat from escaping into the attic. Last winter i noticed condensation and water droplets on the nails that stick through the roof into the attic. 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. Boxes stored in the attic were sometimes wet.

At times there was ice and frost on the nails. When the moisture gets into the attic it condenses on the roof. The dry air evaporates the frost. 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.

Frost itself doesn t do any damage but once it melts things get wet and then damage occurs. It s easier to increase the air moving through your attic using roof turbine vents and other traditional roof vents. That s about it pretty simple. Over the living space the roof has little smatterings of frost but is largely devoid of the frozen stuff.

When moisture gets into the attic it condenses on the roof sheathing in the form of frost. I was up in the unfinished attic of my old house and noticed frost on the underside of the roof sheathing and also on some of the rafters. It must be remembered you must have great soffit ventilation so the air travels through your attic as a constant breeze. Melting frost can lead to deteriorated roof sheathing mold on the roof sheathing wet insulation and water stains on the ceilings.

Attic insulation is in the floor of the attic rather than the roof. When the outside temperature rises again the frost thaws water collects and can leak into. During winter conditions attic frost is a problem associated with attic bypasses. Frost itself doesn t do any damage but once it melts things get wet and then damage occurs.

Because they were running the heat to keep the house warm.