[dannac]

I'm putting a metal roof over a shingled roof.

I will run 1 x 4 pine screwed to rafters... then the metal will screw to 1 x 4.

My question :
Should I put a vapor barrier between the 1 x 4 pine and the metal ?
(visqueen or tar paper)

[joypulv]

Vapor barriers are to be at the point where moisture condenses (due to cold), so that means on the inside of the attic rafters.

[dannac]

Thanks for the reply joypuly... but do not understand,

Or does that mean the answer is "no" no need for vapor barrier between metal and wood ?