Wall area net of openings. Trim LF at corners and surrounds. Rain-screen furring, WRB, vent strips, and every transition flashing on the elevation. NFPA 285 flag where it counts.
Three tools, two spreadsheets, one flashing detail nobody priced. We pulled the bleeders out and rebuilt them as one extraction.
Wall-area net of openings happens in Bluebeam. Trim LF at corners and window surrounds gets re-counted in Excel. Furring SF and WRB lap factor live in a third spreadsheet. The bid ships, the numbers don't match, the margin pays for it.
Wall area auto-subtracts every door, window, and louver on the elevation. Trim LF reads off the actual corner geometry. Furring and WRB compute against the rain-screen assembly from your wall section. Every number traces to a sheet.
Missing or wrong flashing at penetrations and horizontal transitions is the leading envelope litigation driver. It is also the easiest thing to undercount, because the LF lives in five different details across A-401 through A-404.
The agent reads the elevation and the wall sections together. It enumerates flashing LF by location (head, jamb, sill, kickout, horizontal transition, parapet cap) and flags every penetration that lacks a detail call. Nothing ships without flashing.
NFPA 285 compliance on combustible cladding over non-combustible construction is buried in a code review note. Bid the wrong panel system and the AHJ rejects the assembly at submittal, forcing a re-spec mid-job.
The agent pulls construction type from the code review sheet, cross-checks the spec'd cladding, and flags any assembly that triggers NFPA 285. It surfaces the manufacturer's listed assembly and the ESR report on the same row.
James Hardie HardiePanel wants different fastener spacing than Nichiha Illumination. LP SmartSide has its own clip schedule. Western Red Cedar needs furring spacing per the cedar association. Re-deriving each by hand is hours per system.
The agent recognizes the spec'd product family and pulls the manufacturer's clip and fastener schedule into the BOM at the right spacing. Substitution alternates surface with the ESR delta. Priced against live manufacturer feeds.
Four layers. Three tools, traditionally. One extraction, here. Scroll through the build-up.
Siding sits on the line between cladding, envelope, and fire propagation. Preqonn AI cross-checks the spec'd assembly against the standards that disqualify it. Citations on every flag.
What siding subs and envelope leads ask first.
20-minute demo. Bring a real elevation and wall section. We'll run it through Preqonn AI and walk the output.
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