Prolonged wetness will rot out the roof sheathing.
My attic roof is wet.
This will result in condensed water vapor freezing onto cold attic materials which will eventually thaw creating wet attic materials resulting in damage in the attic and inside the home.
Often this is first noticed when re shingling.
Firewood being stored in the attic firewood contains moisture that will evaporate into the surrounding atmosphere.
If the problem is the result of water or moisture penetrating the foundation or floor slab there are many remedial actions which may help.
What to do about a wet attic.
These can include installation of seamless gutters and downspouts.
Adequately ventilated attic but this won t matter if the bathroom exhaust fan dumps warm moist air directly into the attic space.
In the event of the attic not being properly ventilated this would condense on the underside of the roof.
A moist attic means moist insulation and moist insulation is less effective.
Clothes dryers venting air to the attic rather than outside.
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.
Condensation will arise as a result of warm moist air penetrating up through the ceiling.
Air conditioner condensate pan not draining.
Inadequate ventilation attics must be vented to allow moist warm air to escape.
Top causes of attic moisture.
There are many signs that an attic is wet.