The prime reason for this is due to the temperature differential between the inside and the outside of the shed.
Metal shed roof condensation.
Metal roof sweating is a result of excess humidity condensing on the underside of your roof.
Why metal shed and garage roofs get condensation.
This acts like a giant radiator so the air inside the shed gets very warm.
That excess moisture ends up as drops of condensation on the roof.
Essentially condensation occurs at night when the temperature inside a building is warmer than outside.
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.
Warm air has much greater capacity to.
Metal roofs are known for this with condensation forming particularly at the beginning and end of a day.
Warm wet air rises and meets the cold roof and cools.
There are steps to take to ensure as little condensation occurs as possible.
The metal roof heats up quickly in the sun.
Metal tools go rusty fabric becomes mildewed there must be a way to solve this problem.
An alternative tried and tested method of eliminating condensation from your metal garden shed is to clean off the underside of the roof panels with a methylated spirit making sure all panels are dry then purchase polystyrene tiles and attach them onto the underside of the sheds roof using a specialist spray glue that bonds polystyrene to.
However the one issue that occurs with these sheds is condensation.
A metal shed is great for storing items or can be used as a workshop.
Condensation in metal sheds is a commonly reported problem the inside of the shed roof is running with water and this damp atmosphere is bad for the items that are stored there.