What is the best way to cut a tin roof?

with a butter knife... trust me it works.....i...think............or a chainsaw yes chainsaw will do very nice EH

ANS2:Tin roof is usually not made of tin. Tin is a very soft metal, like lead. What people usually call tin roofing is actually galvanized steel. If you have a lot to cut, you will wear yourself out with tin snips. The best plan is to overlap corrugated roofing so as to not need to make major cuts. If you still end up with major cuts, you can use an abrasive or metal blade on a circular saw or a reciprocating saw (e.g., SawzAll--see link). Personally, I'd grab my sawzall every time because I loose less blood using that as compared to tin snips...and a circular saw + ladder + sharp edges just scares me, and I'm fearless.

If it turns out that your tin roof is actually aluminum, you can score the metal with a utility knife and it will break along the cut when you fold it. Practice on scrap. This only works when you cut parallel to the corrugations. If you need to cut across, use the sawzall.