The final method of stoppoing a metal roof sweating is to bond an anti condensation layer on to the underside of the roof.
Underside of metal roof.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
This occurs when water molecules get trapped underneath between the panel and the insulation or underlayment which can cause the metal to weaken if not coated.
Warm air holds more moisture than cold air.
Underside corrosion if the metal is improperly coated on the underside of the panel corrosion could take place.
When condensation starts to form on the underside of the roof it is absorbed by the fleece material.
To understand what causes condensation we reached out to chris davis president of dripstop.
What causes condensation problems on the underside of metal roofs.
Chris explains that there are two important things to remember with condensation and they may seem somewhat counterintuitive.
No drips are formed.
Then as the temperature inside and outside equalise the moisture is released.