1" and 1.5" Nail Strip - Metal Roofing Panels
Western Seam® - Nail Strip Standing Seam Roofing
Nail strip roofing panels are a snap lock standing seam panel that does not have clips. The male flange has one inch slots that are spaced 6 inches apart and fastened directly to the roof deck.
It’s the most economical and easiest standing seam panel to install. However, you sacrifice a lot of performance when you eliminate the clips. It's still an expensive panel when compared to an exposed fastener panel such as corrugated metal. The cost savings are only about fifty cents per square foot versus a better performing product such as MS2® or Western Lock®