The major contributor to condensation in your home is improper ventilation.
Fix condensation on attic roof.
Next take a look at your attic ventilation.
Leaky bathroom and kitchen vents allow warm air to escape into an attic and then condenses on cold roof sheeting.
How to fix ceiling condensation condensation.
This may increase condensation and lower the effectiveness of the insulation.
However this often does not solve the problem.
In the case of ceiling.
In the real world this means moist air from your house coming into contact with the underside of your cold roof tiles or the side of your water tank etc.
Balancing roof and attic venting is tricky.
One very simple method to cut down on condensation issues in an attic is to use a dehumidifier.
Increased ventilation alone will increase the exfiltration of air lowering the temperature of the attic.
Condensation is formed when moist air comes into contact with a cooler object.
Applying mastic gum to the duct joints and adding an r6 layer of insulation around your sheet metal ducts goes a long way toward protecting your attic and ceiling.
Provided that you cut down on the sources of moisture entering the attic and ensure that the attic is properly ventilated then this problem will disappear.
Warm air escaping from a duct into a cold attic can create condensation and encourage mold growth.
Most professionals will recommend increasing ventilation in your attic if ventilation is inadequate.
Condensation will form in your attic if warm moisture laden air comes into contact with a cold surface.
Attics are much like an oven.
To save time and better pinpoint the problem you can hire a professional to inspect your insulation and fill any gaps that might be letting warm air into the space.
Insulation is responsible for keeping warm air inside your living space and out of the attic where it can lead to condensation.
Sunlight heats the roof which raises the temperature of stagnant air.