What is the maximum panel length available and how are long runs from ridge to eave accommodated?

The typical maximum length is 39’. Panel laps are required for longer runs from ridge to eave. Laps consist of an extension of the top metal skin of the panel and butt joining of the foam core and the bottom skin. The end of each panel must sit on the roof structure. The laps are then sealed with specially designed sealants and fasteners to create a gasket-type joint that resists water penetration.