[hewittca]

Wow that is going to be a really nice barn! I am in the process of building a house and am trying to emulate older farmhouse styling and techniques on it as well. We just recently had the roof installed and went with the exposed fastener style. The pluses were its quite a bit cheaper than the standing seam style roof, and it actually matches traditional farmhouse styling better than the standing seam. Fastener technology has improved greatly so there's not as much worry anymore about these leaking. In the past this was a concern.

Negatives are that you have to replace the fasteners every 10 years and the panels seem more prone to "oil canning". Our roof is brand new and was installed in the winter. With the increasing temps I can already see some waviness in the flat areas. This can be improved by choosing a profile with more ridges or a thicker material.

Overall, I'm happy with our roof.