Recommended metal roofing guage?

[smeg]

Just wondering what gauge the pros would recommend....Width = 40 feet, Pitch = 10/12

[Richard A Hetzel]

It depends on so many things...type of support, seam configuration, exactly which metal...not possible to answer precisely.

[Rich]

Not to minimize what Richard has mentioned - but here is what the panels I use have given me.
Minimum would be 29 gauge (not many panels are less than this) with full sheeting underneath. If you have purlin at 2' o.c. a typical 29 gauge panel will hold 104 psf as specified by mfg. This is for 3' wide delta rib type panel with ribs at 9" o.c. Not sure what standing seam would support.

[smeg]

"It depends on so many things...type of support, seam configuration, exactly which metal...not possible to answer precisely.".....2x10 rafters 16 inches on center with 1/2 inch plywood as sheathing. As far as seam configuration and metal types I am at a loss. I am a babe in the woods as far as metal roofing is concerned. Seam configuration... I assumed I be getting 2-3 foot wide sheets that are cut to 20 foot lengths making the seams vertical. Metal type...Most of what I have seen is an aluminum coated steel. What are the options and benefits of one verses the other?
I live in southern VA and see these old houses and pole barns that are 80-100 years old(sometimes older) and the metal roofs are still in decent shape so figured it would be the way to go. Building a house on my own.
Thanks for the replies.:)

[Don_P]

Google Fabral and check around their website for some of the options. Standing seam is the longest lived as the fasteners are concealed, it's the most expensive as well. The screw down is ok but the failure is usually when the fasteners start leaking. I figure that type lasts a little longer than a good shingle. Also check out the new solar electric panels they have on the site, no experience I just noticed them a few weeks ago. After looking at them on the 'puter, start looking at roofs and you'll see and identify the different styles in person.

[Richard A Hetzel]

You could use tern metal, you could use stainless steel if you use the right alloy and finish, you could use copper, you could use lead-coated copper, you could use plain old tin, you could use aluminum, and you could use painted steel. Each one would have its own individual requirements for fastening, seaming, dealing with expansion and contraction, and ventilation below the metal. Don P is right...do your research.