Architectural Flashing Supply
Start a Quote
Basic flashing profile identification · Lesson 1 of 4

Basic flashing profile identification: principles and terminology

What a profile is, the features that tell profiles apart, the families AFS makes by location on the building, and the safety boundary for handling and measuring flashing.

You will be able to: Define profile, leg, bend, hem and girth, name the families of flashing AFS makes by where they sit on a building, and state the safety boundary for handling and measuring pieces.

12 min · 11 slides · 9 questions

All lessons in this module
Slide 1 of 11

What identification means

In this module, to identify a flashing profile is to name three things: its family, its AFS profile name and its variant.

A profile is the end-on shape of the formed piece: its straight legs, the bends between them and any hems on its free edges.

Sources

Videos for this lesson

What this video shows: A panel maker's video of installing box rake trim on standing seam panels, which its description says can alternatively be hemmed at the rake edge. It shows a rake trim in place; the maker notes it is illustrative only. What to notice: the shape of the trim at the rake edge. A hem on that edge is not shown; the description says it is covered in another video.

Video: How to Install Standing Seam Metal Roofing - Box Rake Trim. by UnionCorrugating, on YouTube. Chosen from the video's published description.

Glossary

Profile
The end-on shape of a formed flashing piece: its straight legs, the bends between them and any hems on its free edges.
Leg
One straight segment of a profile, lettered A, B, C from one free edge and measured to the theoretical sharp corner.
Included angle
The angle between the two legs at a bend, equal to 180 degrees minus the turn the sheet makes there.
Girth
The mold-line girth, the sum used for AFS limits and quotes: the legs plus the hem allowances. It approximates the flat width of the blank and ignores bend deduction.
Hem
The edge created by folding metal back on itself (NRCA). AFS forms open, smashed and teardrop hems.
Flange
The projecting edge of a rigid or semirigid component, such as the flange of an edge metal flashing (NRCA).
Counterflashing
Formed metal or sheeting secured on or into a wall or other surface to cover and protect the upper edge of a base flashing and its fasteners (NRCA).
Parapet wall
The part of a perimeter wall that extends above a roof (NRCA); the wall a coping covers.