Moisture in an attic could also be caused by penetrating damp or a leaky roof.
Moisture trapped in attic.
This is particularly important during times of high outdoor humidity.
In the winter attic condensation often turns into frost which actually doesn t pose any threat.
Left alone moisture can cause everything from musty smells mold on wood and insulation and of course rot.
The moisture was rising with the warm air of the home as it escaped past the insulation and it was trapped in the attic because there was no roof ventilation.
When that warm moist air meets the chilly underside of your roof s deck condensation occurs.
So establishing any building defects is also very important.
This would be the arrangement of the resulting layers.
However sometimes attic ventilation systems stop working or become blocked by debris such as leaves or animal nests.
Releasing all of the heat that rises and gets trapped in the attic can be achieved with one or a.
Condensation in attic spaces can be alarming depending on how much you re seeing.
Moisture frost and ice buildup on roofing nails.
Moisture or frost on the roofs sheathing.
Trapped moisture causes condensation in your home.
Attic condensation generally happens during winter spring months when warm moist air from the main living area rises into the attic space.
Attics should be properly ventilated to the outside so that moist air does not become trapped.
In most cases these sources do not produce excessive moisture however if a house is very air tight and or if ventilation is poor it can certainly contribute greatly.
Ventilation to the exterior.
Some common sources for attic moisture are showers dishwashers dryers cookers washing machines baths humidifiers and other heat producing machines.
In the attic under the glass wool insulation i am thinking of adding a polyethylene sheet between the joist sealing it with caulking.
Buckled or damaged roof sheathing.
Water or drip marks scattered on the attic floor.
If you suspect you have moisture problems in your attic check for the following indications of excess moisture in the attic.
Defects causing damp in the attic should be identified and addressed first.
Sealed attics trap excessive heat and moisture which can.
A thin layer of moisture versus large water droplets can mean the difference between a future major roof repair or not.
The most obvious ways to deal with condensation in your attic are.
The solution was to install more attic insulation do some required air sealing on the second floor and install intake and exhaust ventilation in the attic.