I just found info. on a web search. (dah)
Metal edging goes under tar paper underlayment on lower edge of roof but
along rake it is recommended on top of underlayment although under and over
The reason it is better over is to protect wind driven rain from getting
under the paper.
They still do not address the idea that isolating the edging from the wood
is a good idea.
Now whenever I install metal windows we always separate the window from the
wood frame by paper or a barrier..
too much thought on this subject.
"jloomis" wrote in message
I always have a question on roof nosing. The metal edge used in roofing.
Now I know on the downward slope of the roof that the tar paper goes over
the metal roof edge. And the shingles go on the paper.
Now on the sides, and up the rake along the facia, does the metal go over
the paper or under the paper or does it really matter.
I have always been under the impression that metal needs to be isolated from
wood too by tar paper or some other form of separation.
Since metal gets cold and sweats, it keeps the wood from getting
So does that mean the metal edging on a roof needs to be isolated by paper
first, and then covered over by the first layer of tar paper.
I guess I have over thought this whole process, and worry too much.
I am re-roofing my shop and garage and trying to make sense out of what
steps to follow when I re-roof.