Condensation on metal roofs can be a problem once the weather starts to get cold.
How to stop condensation on metal garage roof.
The cold metal in contact with the warm air means that water droplets condensation forms on the inside surface of the shed roof.
That excess moisture ends up as drops of condensation on the roof.
Worse if the roof is over your shop carport barn or self storage unit you have to worry about what damage it is doing to the contents of these buildings.
Why metal shed and garage roofs get condensation it took me a while to work this out but if you think of the way a solar still works that is what is happening to your shed roof.
Condensation happens when moisture filled air contacts anything that is below the dew point temperature.
Essentially condensation occurs at night when the temperature inside a building is warmer than outside.
Have you ever been under a metal roof that had condensation on the bottom side of it.
Picture a cloud of moisture floating overhead between the rafters.
Ok now we understand a bit how the condensation in metal sheds happens.
The metal roof heats up quickly in the sun.
Warm wet air rises and meets the cold roof and cools.
Metal gets cold faster than other items so condensation begins on metal first.
Metal roofs are known for this with condensation forming particularly at the beginning and end of a day.
It is quite annoying to have the condensation falling on you like rain.
It can lead to roof leaks even if rain has not occurred for several days.