The key to getting condensation to evaporate is air flow.
How to make a metal roof stop sweating.
The five key points to stop your metal roof sweating are.
Having vents in all elevations of the shed is an effective way of minimising metal roof sweating.
If there is no high level ventilation already installed install a 15cm ventilation grille at the highest point at each end of the eaves.
The lower the pitch of a metal shed roof and also the deeper the corrugations the worse the problem of metal roof sweating.
Metal panels that have dripstop or rfoil are well equipped to handle the rigors of the elements.
The roll of felt is spread out over the entire roof on top of the plywood and nailed down with roofing nails.
This plywood will absorb the moisture and prevent condensation.
The use of ceiling and floor fans improve conditions for evaporation to occur.
Insert a nail every six inches along the perimeter of the felt and every foot on the inside to secure it to the plywood.
This will provide flow through ventilation at the point where the hottest air rises to.