From the wall to the profile
Every value comes from the job. Read the governing document first: the project specification, the roof manufacturer, or a guide such as the CDA handbook or UFGS 07 60 00.
Then record the wall and reglet type, the reglet depth, the base flashing height, the lap asked for and the bottom clearance.
A flow chart of ten numbered steps in two columns, from reading the governing document through recording the wall, sizing the flange and face, choosing the metal and checking AFS limits for it, then a decision: is copper on or above steel, aluminum or zinc? Yes loops back to the metal choice, to isolate it per the specification or change the metal; no goes on to folding, inspecting and shipping with the piece count.
- 1
- Read the governing document: project specification, roof manufacturer, CDA or UFGS
- 2
- Record the wall type and the reglet or receiver type
- 3
- Record the reglet depth as cut, base flashing height, required lap and bottom clearance
- 4
- Pick a FlashDraft starting shape (Counter Flashing 1 to 6, Reglet Flashing)
- 5
- Set flange = reglet depth; face = reglet height - (base height - lap); hem 0.5 in on the inside face
- 6
- Metal and thickness: at least 0.019 in; AFS default 24 ga galvanized; copper 16 oz where the CDA governs; painted face
- 7
- Check AFS limits for that metal and gauge: interior legs at least 0.75 in, end flanges at least 0.5 in, Blank Width within 48 in, piece within 126 in
- 8
- Fold on AFS's Thalmann folder
- 9
- Inspect: legs, angles, hem, painted face, length
- 10
- Ship with the piece count, end laps included
Sources
- Copper in Architecture Design Handbook - 14.5 Copper Flashing and Trim (guide specification) - Copper Development Association
- UFGS 07 60 00 Flashing and Sheet Metal (08/23) - U.S. Department of Defense, Unified Facilities Guide Specifications (WBDG)
- Anatomy of a regleted counterflashing (Jeffrey S. Levine), Professional Roofing, November 2022 - National Roofing Contractors Association (Professional Roofing)
- FlashDraft template library - Architectural Flashing Supply
- AFS fabrication limits - materials, thicknesses, bend rules and sizes the shop can make - Architectural Flashing Supply
- AFS standard profile defaults (Counter Flashing, Base Flashing, Reglet and other types start as galvanized steel, 24 ga) - Architectural Flashing Supply
- Copper in Architecture Design Handbook - 9.2 Counterflashing - Copper Development Association
- FlashDraft to the AFS Thalmann folder (via PathfinderEdge): legs, bend angles and blank width; painted side and 3D confirmation - Architectural Flashing Supply
- Minnesota Rules 1309.0903 - International Residential Code section R903.2.1 Flashing, as adopted and amended (version 2020-03-31) - State of Minnesota, Office of the Revisor of Statutes