Wet Sheathing In Attic

How does condensation get in the attic.

Wet sheathing in attic.

These signs can vary contingent on the catalyst of the problem and are generally worse on north facing or shady sides of roofs. Moist or wet insulation. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. Mold on attic sheathing.

It is never a good idea to install a roof over wet plywood or any type of roof sheathing. Wet sheathing was found in attic area due to lack of venting. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Trapped water will boil when the sun heats the roof and the shingles will then have small pits where.

Buckled or damaged roof sheathing. Prolonged wetness will rot out the roof sheathing. Installation tips osb roof sheathing the ol sage builder trubord. Water leaks are more obvious as telltale signs such as darkened water stains evidence of mold on the ceiling inside the house or wet sheathing.

Often this is first noticed when re shingling. There are many signs that an attic is wet. The osb and in fact any wood panels must be allowed to dry completely depending on how wet the panels are this could be a few days before any roofing material is applied to avoid trapping moisture under the roof material that could cause edge swell and buckling. Moisture or frost on the roofs sheathing.

Water or drip marks scattered on the attic floor. If you have ceiling leaks only in the spring it may be that ice has been forming on the sheathing all winter and it suddenly melts when a warm spell arrives.