Underneath it is the attic space followed by a suspended ceiling.
No sheathing under roof.
Owners of agricultural buildings man caves and horse barns all are worried about the corrosive effects of condensation.
Never attach roof sheathing with staples.
3 benefits of rigid foam sheathing.
How to prevent condensation under a metal roof.
It is nailed directly to the rafters.
Modern metal roofs are expected to last 30 years or longer.
Currently there is no sheathing or tar paper under the metal.
While metal roofing doesn t require plywood underlayment there are circumstances in which you may wish to install plywood to anticipate future roofing needs or to offer additional soundproofing.
Here s how to fight back against the enemy within.
July 28 2017.
When open cell spray foam is used a low perm class ii vapor retarder is installed where required.
Sheathing should be a minimum of 19 32 inch thick.
Plywood has an r value of 1 25 and fiberglass batts have an r value of 3 14.
Sheathing is installed perpendicular to roof trusses.
A leak free roof membrane that is fully adhered to the roof sheathing should be installed.
If you re wondering how to prevent condensation under a metal roof you re not alone.
The current state and local building codes for the minimum r value of air impermeable insulation required for the roof assemblies in the home s climate.