mwb
Platinum Member
The eave ends are capped with a foam liner but the top end is vented into the ridge cap (top edge foam is between the steel and the ridge cap). The amount of condensation that accumulates between the steel and vapour barrier (felt) should be minimal (i.e. not enough to cause pooling above the eave) because there is very little air exchange between them. The foam ends don't seal very tightly anyway...EddieWalker said:I know that some manufacturers specify using OSB or decking under their metal roofing, but it's pretty rare and only on certain types of panels. What type of roof panel are you using?
The one concern about using decking under metal is condensation. There needs to be a water proof layer between the metal and the wood. Most often, I've seen regular roofing felt paper used for this.
The roof looks like R panles, which are normally sealed at the ends to keep out bugs and moisture, but with decking underneith and the condensation issue, I wonder if you can seal the ends up? Getting the water out and not having it trapped would be impossible with the ends sealed up.
Mike