3:12 Metal Roof Recommendations

All things considered, my suggestion in this case would probably be a 28 or heavier gauge through-fastened panel. This is based upon the relentless winds, potential for snow, roof pitch, etc. The only contractor I know personal and can recommend is Beartooth Metal Roofing out of Billings. I realize they are a ways from you but I think they are accustomed to traveling. The manufacturer of the roofing you choose should have instructions for various roof penetrations ... it will be important to follow their instructions.

Hi, I have read some of the forum posts already regarding 3:12 roofs and wanted to ask a few clarifying questions of "the experts" :) 1. We reside in SW Montana, and are in between two mountain ranges that funnel south (narrow) to north (wide) and thus cause extensive winds in the winter months. 30-40 is about average from our weather stations readings over the past 7 years. Are metal roofs good for this type of wind? 2. If they are acceptable for this type of wind, are there any caveats to installing them for this type of environment? 3. What is the minimum gauge you would recommend for a metal roof in SW Montana? 4. I plan on doing the installation myself as the contractors in my area want an excessive amount just to come out to my place because it is so rural (we're 20 miles from the nearest town (population 500) and 70 miles to the nearest large town (Bozeman, MT 100k population). Any pointers would be appreciated. 5. What is the best approach to handling vents and the chimney? An other insight from the experts would be GREATLY appreciated! TIA! Brad in SW Montana

Todd is spot on. 28 would be the minimum in my book. Contact a reputable local company and see what they recommend in you application. I prefer a hidden fastener myself, but exposed fasteners are used quite often and are very proven when installed properly. If you are talking about venting in terms of bath vents, you can run those to the gable end wall and vent through the siding if possible.