Basically when the cold air from your air conditioner mixes with the warm moist air in your attic condensation happens.
Attic ceiling wet.
Top causes of attic moisture.
And then it drips down onto your ceiling creating nasty water marks.
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.
Improper ventilation and insulation of home attic space can produce high humidity levels and trap.
There are 3 common culprits of this problem.
Prolonged wetness will rot out the roof sheathing.
If the problem is the result of water or moisture penetrating the foundation or floor slab there are many remedial actions which may help.
The same thing can happen with your ac system and vents.
The best solution for controlling moisture is at its source.
What to do about a wet attic.
If you have access to the attic space enter the attic and look for the spot where water is dripping down from the roof sheathing above.
A leaky pipe is a disaster waiting to happen since even mild leaks can lead to considerable damage to your home s walls ceiling flooring and foundations.
Inadequate ventilation attics must be vented to allow moist warm air to escape.
Also it is possible for dirt or debris to become lodged inside.
These can include installation of seamless gutters and downspouts.
There are many signs that an attic is wet.
Condensation on your ceiling can cause water damage and promote the growth of mold or mildew.
Not enough insulation on the ducts themselves.
A moist attic means moist insulation and moist insulation is less effective.
Often this is first noticed when re shingling.
The actual roof damage may be located directly over this spot or it may be located further up the roof line if the water has been flowing down the sheathing or a rafter before falling to the floor of the attic.
The most common cause of ceiling condensation is an attic with too little insulation and ventilation.
Over time algae can grow inside of this drain line causing backups or clogs.
In summer when the air conditioning is on the reverse happens.
Pipes may burst or crack after years of long use leading to leaks in the ceiling.
In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.
Air conditioner condensate pan not draining.