Roof Is Damp In Attic

Noticeable musky damp odor.

Roof is damp in attic.

Finding water damage on the wall or ceiling is worrying for any homeowner. Most people assume this is caused by a leaking roof but that might not be the source. Water or drip marks scattered on the attic floor. There are dozens of things that can cause condensation buildups in the attic one of which is a leaking roof.

And to make matters worse these holes are not easily identified unless it s raining. Moisture frost and ice buildup on roofing nails. Moisture or frost on the roofs sheathing. In the vast majority of cases the mold growth is caused by condensation.

The cause depends on whether you have an unconditioned attic or a conditioned attic. Fixing this issue can be less costly than replacing a roof but it should be addressed as soon as possible. Water found in these places is commonly caused by condensation in the attic. The typical expected cause is water penetration from the exterior due to a defective roof covering.

If you suspect you have moisture problems in your attic check for the following indications of excess moisture in the attic. Moist or wet insulation. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. 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. If attic air is humid and roof sheathing is cold condensation or frost can accumulate on the underside of the sheathing. A roof timbers within an attic can become damp from two sources.