To understand what causes condensation we reached out to chris davis president of dripstop.
Underside of metal roof.
The final method of stoppoing a metal roof sweating is to bond an anti condensation layer on to the underside of the roof.
Then as the temperature inside and outside equalise the moisture is released.
Underside corrosion if the metal is improperly coated on the underside of the panel corrosion could take place.
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.
No drips are formed.
Install the roofing screws vertically along each rib in the panel.
What causes condensation problems on the underside of metal roofs.
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.
When condensation starts to form on the underside of the roof it is absorbed by the fleece material.
Chris explains that there are two important things to remember with condensation and they may seem somewhat counterintuitive.