5x10 Aluminum Sheet Material

Hello All,
With your inspiration here, I have gotten the bug and will be building my own Teardrop.
After some cad work and decision making, we decided on a 5x10 build and bought a new trailer to facilitate.
My issue now, is finding a supplier for 5' wide sheets of aluminum for the roof. I have sourced 4x10 painted sheets for the sides locally (in Washington ST) and cannot find a place that supplies 5x10 sheets.
I am hoping someone here could provide a source, contact, or suggestion on a possible supplier for a 5x10 sheet of aluminum (.032 or .040 should suffice).
If we are unable to source 5x10, the last resort would be cutting the 4x10 in half and having seams across the roof (though I am fairly certain this is a bad idea moisture wise).
Thanks for all your help and inspiration!
With your inspiration here, I have gotten the bug and will be building my own Teardrop.
After some cad work and decision making, we decided on a 5x10 build and bought a new trailer to facilitate.
My issue now, is finding a supplier for 5' wide sheets of aluminum for the roof. I have sourced 4x10 painted sheets for the sides locally (in Washington ST) and cannot find a place that supplies 5x10 sheets.
I am hoping someone here could provide a source, contact, or suggestion on a possible supplier for a 5x10 sheet of aluminum (.032 or .040 should suffice).
If we are unable to source 5x10, the last resort would be cutting the 4x10 in half and having seams across the roof (though I am fairly certain this is a bad idea moisture wise).
Thanks for all your help and inspiration!