Steve wrote:

I have tried tin snips and these cause distortion of the ridges and
spreading of the ridge pattern, hence sheet width. Not much, but enough that
I get a "fan-out" effect in the width. Also unable to fit tightly to the
next upper sheets.

I also tried cutting with an hand operated electric sheer as well and got
similar results.

I don't know how your roofing material looks like.

If that sheet is flat:
I have cut tin sheet with a circular (hand) saw. Just had carbide tips
with a negative rake on the blade.
If it is not flat, give it a try. You need a circular saw that does deep
enough cuts.


Nick
--
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