I bought a house a year ago and the section above the mudroom started leaking, so I had to tarp it. I am looking to reroof / roof-over the entire thing later this year, and I've done some research and realized that it is a low-slope roof. Some of it is 4/12 and some of it is less (maybe 3/12). It is currently using asphalt 3-tab shingles.
I read online that you are not supposed to use asphalt shingles on a low-slope roof. Is this correct? What type of shingles should I use and can I use my pneumatic roof nailer for those? (I just bought one for this task)