The roll of felt is spread out over the entire roof on top of the plywood and nailed down with roofing nails.
How to make a metal roof stop sweating.
Having ventilation holes around the roof at eaves level and in the gable walls allows moisture rich air to escape.
Insert a nail every six inches along the perimeter of the felt and every foot on the inside to secure it to the plywood.
Air circulation and ventilation stagnant indoor air is the perfect environment for condensation to occur.
You must have a vent at both ends not just one.
The five key points to stop your metal roof sweating are.
This will provide flow through ventilation at the point where the hottest air rises to.
The use of ceiling and floor fans improve conditions for evaporation to occur.
Having vents in all elevations of the shed is an effective way of minimising metal roof sweating.
Metal panels that have dripstop or rfoil are well equipped to handle the rigors of the elements.
The key to getting condensation to evaporate is air flow.