Roll out the vapor barrier and cut it to size with a utility knife to fit over the ceiling.
How to keep metal porch roof from sweating.
Tape it all the way around with duct tape so it is secure and make sure there are no gaps or seams for any moisture to get through.
The lower the pitch of a metal shed roof and also the deeper the corrugations the.
When conditions change the ambient air temperature usually rises thereby raising the dew point.
Drip stop can be applied to the back of metal coils either galvalume plus or painted and then the metal can be roll formed onto panels.
Use the nail gain to affix the plywood onto the frame of the structure.
This roll of plastic will help keep the moisture from leaving the attic.
Hoist the plywood on top of the structure and line it up.
The key to getting condensation to evaporate is air flow.
The goal is to use as many full sheets of plywood as possible.
Line the attic ceiling with a plastic vapor barrier.
Having ventilation holes around the roof at eaves level and in.
You must have a vent at both ends not just one.
Place a vapor retarder under floor gravel or concrete ventilate enclosed building when concrete is being poured and continue to ventilate.
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 five key points to stop your metal roof sweating are.
Add as many plywood sheets as possible in order to cover the entire roof.
Build your structure where possible in an elevated position with good natural drainage.