If the standing-seam metal cover (S...

If the standing-seam metal cover (SSMR) provides unique advantages across alternative systems - notably pierce resistance, low maintenance and the ability to readily accommodate thermal expansion and contraction - it also requires unique and careful detailing in order to capitalize in succession those advantages.

Detailing errors are commonly made at penetrations and other interruptions in the SSMR notably ridges and valleys. They may also come to pass along seams. One problem is that details supplied through manufacturers don't always address the alterations and upgrades required for unusual