Term Description
Batten seam

A name applied to a common standing-seam metal panel profile that may use a square- or rectangular-profile snap-on cap or may be attached to and formed around a beveled wood or metal batten.
Bermuda seam

A metal panel profile featuring a stepdown profile that runs perpendicular to the slope of the roof; has a shingled appearance and is water-shedding.
Double-lock standing seam

In a metal roof panel or metal cap, a standing seam that uses a double overlapping interlock between two metal panels. See "standing seam."
Lap seam

Occurs where overlapping materials are seamed, sealed or otherwise bonded.
Seam

A joint formed by mating two separate sections of material. Seams can be made or sealed in a variety of ways, including adhesive bonding, hot-air welding, solvent welding, using adhesive tape and sealant.
Standing seam

In metal roofing, a type of seam between adjacent sheets of material made by turning up the edges of two adjacent metal panels and then folding or interlocking them in a variety of ways.