What you see is condensation also known as ductwork sweating.
Is it normal to have condensation in attic.
How does condensation get in the attic.
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.
Improper ventilation and insulation of home attic space can produce high humidity levels and trap.
Condensation is a common sign of inadequate insulation and or ventilation.
Condensation is more apt to occur in climates where the average temperature is 35ยบ f or colder.
For a more detailed explanation see my article on condensation in buildings.
Condensation is usually first noticed on your windows and skylights because they are the most visible areas of your house.
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.
The insulation on the floor of your attic needs to have an approved vapor barrier installed on the warm in winter side of the insulation.
On hot days you may notice water droplets forming on your visible air ducts and wonder whether this is normal.
You need to ensure that warm air passing through into the attic space is minimized.
Improper or no insulation of ducts.
The simple physics behind sweating is.
Insulation is responsible for keeping warm air inside your living space and out of the attic where it can lead to condensation.
This is achieved with adequate insulation.
You can prevent these problems from occurring by maintaining a dry attic with a low relative.
Condensation on your ceiling can cause water damage and promote the growth of mold or mildew.
Air conditioners are designed to produce condensation extracting humidity from indoor air makes it cool more efficiently and feel more comfortable.
Condensation in the attic is a serious problem that must be addressed by homeowners.
In most cases rolled or batt insulation will have a vapor barrier already attached.
Condensation will form in your attic if warm moisture laden air comes into contact with a cold surface.
If you have taken the proper steps to remove excess humid air from your home and you re still having condensation issues it might be time to check the attic insulation.
Condensation problems in air conditioners.
It does not necessarily mean that your a c system is in trouble but it may still be something that requires your attention.
Condensation in the home a warning sign.
In order to prevent attic condensation adequate attic insulation is required.