Having roofed a bit and read the threads I know that a 2:12 pitch is pretty flat and regular shingles and a metal roof are generally out. But I'm thinking my application may be a bit different.
I'm roofing a non-closed in awning on an unheated shed. I'm trying to decide if (because the space underneath is outsided and unheated) I can go ahead and put regular roofing shingles on. It's not like it's going to suffer from ice-daming (though we do get heavy snow load around here). Or maybe the problem doesn't have anything to do w/ ice damning.
I can't get brown felt around here and I think the felt will look tacky -- plus, I know how to do shingles, not felt.
I have build some fire-wood shelters, and a few overhangs over the past year. Many with almost no slope. I have used plastic (looks like ridges or waves), shingles (regular), and metal roof. Believe it or not the only one that leaked is the metal roof. Unfortunatley the plastic one only lasted 5 years before it started to age and crack.
Only a handy man?! How I wish I were handy! I just blunder along.
I decided to go the the 90# felt. I'm really really cheap, so I just couldn't justify the Liberty self-adhesive stuff at 3 1/2 times the cost AND ONLY a 10 year warrantee?! Right now the 15# felt is getting tested by a thunderstorm -- I didn't even get the starter shingle finished.