Anatomy of a Corrugated metal Roof
Corrugated metal roofing is a durable, cost‑effective system built from several key layers that work together to protect your home. Here’s a simple breakdown of each part and what it does.
Corrugated Metal Panels
These are the main sheets you see on the roof. Their wavy, corrugated shape adds strength and helps channel water down the slope, giving corrugated roofing its classic, agricultural‑style appearance.
Fasteners, Closures & Sealant
Corrosion‑resistant screws with sealing washers secure the panels to the roof. Foam closure strips and sealant help lock out wind‑driven rain, insects, and debris from getting underneath the metal.
Flashing, Trim & Ridge Cap
Flashing, edge trim, and the ridge cap finish and seal the roof at walls, edges, and the peak. These pieces guide water safely off the roof and into gutters, protecting vulnerable joints and giving the roof a clean, finished look.
Roof Deck & Underlayment
The roof deck (wood framing or sheathing) is the solid base that supports your metal roof. Over it sits a waterproof or water‑resistant underlayment, adding a crucial backup layer of protection against leaks and wind‑driven rain.