Convection can take place through cracks in different materials unglued drywall tape joints electric boxes holes drilled for wires and plumbing pipes ceiling light.
Everything in my attic is wet.
If you suspect you have moisture problems in your attic check for the following indications of excess moisture in the attic.
Though attics are typically hot and dry a leaky roof or pipe condensation or severe weather can cause water to enter your attic.
Moisture or frost on the roofs sheathing.
Attics can suffer two types of leaks.
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.
Moist air is created from everyday activities including cooking.
Moisture frost and ice buildup on roofing nails.
Water in your attic can damage wood beams insulation and even.
Clothes dryers venting air to the attic rather than outside.
Water or drip marks scattered on the attic floor.
My guess is that this has been going on for a while and is caused by convection of living space moisture into the attic the most common source of attics excessive moisture.
Moist or wet insulation.
Buckled or damaged roof sheathing.
Air conditioner condensate pan not draining.
Firewood being stored in the attic firewood contains moisture that will.