Roof Is Damp In Attic

If you suspect you have moisture problems in your attic check for the following indications of excess moisture in the attic.

Roof is damp in attic.

Moisture or frost on the roofs sheathing. If attic air is humid and roof sheathing is cold condensation or frost can accumulate on the underside of the sheathing. Finding water damage on the wall or ceiling is worrying for any homeowner. And to make matters worse these holes are not easily identified unless it s raining.

The typical expected cause is water penetration from the exterior due to a defective roof covering. Noticeable musky damp odor. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. Common causes of condensation in the attic.

Even a small pin head sized hole can send gallons of water pouring into your attic over the course of a couple months. Water or drip marks scattered on the attic floor. Most people assume this is caused by a leaking roof but that might not be the source. The cause depends on whether you have an unconditioned attic or a conditioned attic.

A roof timbers within an attic can become damp from two sources. Moisture frost and ice buildup on roofing nails. There are dozens of things that can cause condensation buildups in the attic one of which is a leaking roof. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.

Buckled or damaged roof sheathing. In the vast majority of cases the mold growth is caused by condensation. Moist or wet insulation.