The five key points to stop your metal roof sweating are good roof ventilation the key to getting condensation to evaporate is air flow.
Metal roof sweating problem.
Warm wet air rises and meets the cold roof and cools.
Roof pitch the lower the pitch of a metal shed roof and also the deeper the corrugations the worse the problem of.
If the tin roof sits on top of another material such as wood then you can get a case of wood rot.
When temperature and humidity conditions reach dew point moisture can condense on the underside of metal roofing and potentially cause water damage to the inside of your customer s building.
Metal gets cold faster than other items so condensation begins on metal first.
Changes to the structure s original form that puts tension on or moves the panels.
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.
Richard the problem you are describing is common with metal roof buildings in climates with high or mixed humidity with temperatures low enough to reach dew point.
Inadequate space allotted for thermal expanding and contracting of the panels.
Picture a cloud of moisture floating overhead between the rafters.
As the air inside the building is heated it rises carrying moisture with it.
As it cools it can t hold as much moisture.
This video shows what a significant condensation problem can look like.
Those drips from ceilings and surface moisture occur when warm air comes in contact with the cooler roofline or walls.
Condensation on metal roofs can be a problem once the weather starts to get cold.
It can lead to roof leaks even if rain has not occurred for several days.
When this happens the tin roof can rust and even warp.
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.
Improper usage handling and storage by installers.
Metal roof condensation especially with a tin roof can cause serious problems when the metal sweats or rainwater collects under the tin panels.
Metal tools go rusty fabric becomes mildewed there must be a way to solve this problem.
