Can I overlap 8 ft. Corrugated Galvanized Steel 29-Gauge Roof Panels?

Absolutely you can overlap any number of corrugations.

Absolutely you can overlap any number of corrugations. We recommended a minimum of 2 when using for roofing applications. Butyl Sealant, SKU 714021, used at the ends and side laps also help to prevent wind driven rain from reaching the underlayment and roof deck.