With a 75 f dew point in the attic and at the outside walls there is a high probability for condensation in many places.
Summer attic condensation problems.
Most professionals will recommend increasing ventilation in your attic if ventilation is inadequate.
However this often does not solve the problem.
How to completely prevent condensation once you ve blocked the common entry points for air and thus moisture penetrating your attic space you can prevent moisture from accumulating in your attic in two main ways.
Improper or no insulation of ducts.
Condensation on your ceiling can cause water damage and promote the growth of mold or mildew.
In the winter the condensation will form frost and in the summer this condensation can grow mold.
The first signs of a condensation problem in your attic might show up during a re shingle on your roof.
It is important to note that this is not a roof related issue.
Looking for signs of moisture.
When water condenses and drips into your attic or home it can cause a some serious secondary problems.
The simple physics behind sweating is.
First water dripping off of your ducts and onto your insulation can cause the insulation to compress which decreases it s r value or ability to insulate.
If there are signs of rot on the roof sheathing then there has been prolonged moisture in the attic.
In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.
This could be caused by high indoor rh.
If left untreated it can damage critical structural elements of the home such as the trusses and rafters ruin insulation damage any stored belongings and lead to the formation of potentially toxic black mold.
Heat and humidity originating from the interior environment of the home and traveling up into the attic on the underside of the roof is the cause of attic condensation.
The most common cause of ceiling condensation is an attic with too little insulation and ventilation.
Increased ventilation alone will increase the exfiltration of air lowering the temperature of the attic.
In summer when the air conditioning is on the reverse happens.
Whenever there is a contact between the hot humid air and cold metal surface then there will be sweating or condensation on the metal surface so it is very important to have a proper insulation for the air handler ducts in case the portion of the duct is coming in contact with the unconditioned air outside.
Condensation in the attic is a serious problem that must be addressed by homeowners.
You may need the extreme cold air inside to be comfortable.
This may increase condensation and lower the effectiveness of the insulation.
