Base counterflashing and reglet fabrication
The two pieces at a roof-to-wall joint and the two meanings of reglet, the metal minimums and laps that change with the governing document, sizing the reglet flange, face and hem into a FlashDraft profile, and the shop and field checks that catch the recurring defects.
4 lessons · about 48 min · 12 diagrams · 5 videos
Version 1.1.0
Builds on these modules
Lessons
0 of 4 complete
Lesson 1 · 13 min · 12 slides · 10 questions
Base counterflashing and reglet fabrication: principles and terminology
The two pieces at a roof-to-wall joint, the two meanings of reglet and of base flashing, how the top edge is held, and where AFS work ends and site work begins.
You will be able to: Define base flashing, counterflashing, reglet, raggle and receiver in both the senses the trade uses, name the ways the top edge is held, and state the safety boundaries at the wall and in the shop.
Not startedStart →Lesson 2 · 13 min · 12 slides · 11 questions
Base counterflashing and reglet fabrication: materials, standards and design constraints
The 0.019 in code minimum and the gauge trap, minimum metals by document, copper tempers, lead and mixed metals, manufacturer reglet systems, and laps and lengths that change with the governing document.
You will be able to: State the code minimum thickness and why gauge alone does not prove it, compare the metal minimums and laps different documents set, and choose metals that will not corrode each other.
Not startedStart →Lesson 3 · 12 min · 12 slides · 8 questions
Base counterflashing and reglet fabrication: methods and worked application
From the wall to the profile: flange equal to the reglet depth, a face that makes the lap, an AFS hem, a FlashDraft starting template, Blank Width and piece count worked out, corners and wedges.
You will be able to: Turn a wall condition into a counterflashing profile: size the reglet flange, the face and the hem from the governing document, check AFS limits and the FlashDraft Blank Width, and count pieces with end laps, recording every input and unit.
Not startedStart →Lesson 4 · 10 min · 11 slides · 7 questions
Base counterflashing and reglet fabrication: defects, verification and case study
The recurring defects and which ones start in the shop, correct and incorrect details, sealant and fasteners, shop and field checks, and a case study from diagnosis to remake.
You will be able to: Tell shop defects from site defects in a regleted counterflashing, inspect a formed piece against the order, diagnose a flange that does not match the reglet and a short lap, and document the evidence and the fix.
Not startedStart →
Practical task
Prepare a job packet for one roof-to-wall counterflashing: from a given wall condition, decide and justify the reglet flange, face, hem and metal against the governing document, check the profile against AFS limits, count the pieces with end laps, and inspect a formed sample (or, without a shop, a drawn one).
Hand in
- A decision rationale: the governing document for the lap, end lap and piece length, and the reglet or receiver type, each with its source
- A marked-up sketch or FlashDraft drawing: reglet flange, face, hem on the inside face, lap over the base flashing and bottom clearance, with units
- Material and measurement assumptions: metal and thickness against the 0.019 in minimum, the reglet depth as cut and who measured it, the FlashDraft Blank Width (a quoting figure, hem allowance included), FlashDraft status, and piece count with end laps
- A quality checklist completed for the piece: material, legs, flange depth, hem, painted face, length and count
- A defect analysis for one defect found or seeded: what it was, shop or site, the value and source it misses, the fix and the check that proved it
Rubric
| Criterion | Meets the standard when |
|---|---|
| Sources | Every value names its owner: the code text, the CDA (copper), UFGS, NRCA or Levine, a manufacturer (its system only), or an AFS register. |
| Face and lap | The face is worked from the reglet height, base flashing height and governing lap, with the arithmetic and units shown. |
| Flange | The reglet flange equals the reglet depth as cut and measured, not a default. |
| Limits | Legs, hem return and the FlashDraft Blank Width (hem allowance included) are checked and the FlashDraft status is stated. |
| Pieces | The piece count uses the governing length cap and end laps, and corners and ends are listed separately. |
| Metals | No lead counterflashing; no copper touching or draining onto steel, aluminum or zinc without the isolation the specification calls for. |
| Safety | The packet names silica control and fall protection as the installer's, and keeps hands clear of the folder's point of operation. |