Chris explains that there are two important things to remember with condensation and they may seem somewhat counterintuitive.
Underside of metal roof.
Warm air holds more moisture than cold air.
No drips are formed.
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.
Install the roofing screws vertically along each rib in the panel.
To understand what causes condensation we reached out to chris davis president of dripstop.
What causes condensation problems on the underside of metal roofs.
Then as the temperature inside and outside equalise the moisture is released.
Place the first screw.
Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof.
The final method of stoppoing a metal roof sweating is to bond an anti condensation layer on to the underside of the roof.