Architectural Flashing Supply
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Closeout, punch lists and warranties · Lesson 4 of 4

Closeout, punch lists and warranties: defects, verification and case study

The defects a flashing punch walk finds, how to sort each into punch work, warranty or maintenance, what takes coverage away, the evidence a claim needs and a constructed month-7 case study.

You will be able to: Sort an observed defect into punch work, a warranty item or a maintenance item, choose the corrective option, and document the evidence a reinspection or a claim will need.

19 min · 12 slides · 19 questions

All lessons in this module
Slide 1 of 12

Defects that turn up on a flashing punch walk

MBCI says to check roof panel joints and trims for proper seals and loose fasteners.

Drexel's Econo Coping guide has a nail in each pre-punched hole of the cleat.

Drexel's Econo Coping guide has the roof-side leg of each coping length screwed with #9-13x1-1/2" S.S. washered screws at 12" on center.

What a punch walk checks on a coping capSection through a parapet wall capped by a red AFS coping cap whose hems curl inside and hook below a continuous cleat on each wall face. Seven lettered checks: nails in every pre-punched hole, cleat present and tight, a 1/8 inch gap between cleat sections, the lap in place with no gap between coping lengths, sealant at a lap or end continuous, an undamaged finish, and washered screws through the roof-side leg. A side view shows two coping lengths lapped and two cleat sections with the gap. Five small caps show both hems open, both closed, one open and one closed, a kick edge with the hem open, and a kick edge with the hem closed.What a punch walk checks on a copingRoof sideOutside faceGABFAFS copingAlong the run, side viewDEC1/8 inHem and kick variationsBoth openBoth closedOne open, one closedKick, hem openKick, hem closed

Section through a parapet wall capped by a red AFS coping cap whose hems curl inside and hook below a continuous cleat on each wall face. Seven lettered checks: nails in every pre-punched hole, cleat present and tight, a 1/8 inch gap between cleat sections, the lap in place with no gap between coping lengths, sealant at a lap or end continuous, an undamaged finish, and washered screws through the roof-side leg. A side view shows two coping lengths lapped and two cleat sections with the gap. Five small caps show both hems open, both closed, one open and one closed, a kick edge with the hem open, and a kick edge with the hem closed.

A
A nail in every pre-punched hole of the cleat
B
Cleat present and tight to the wall
C
1/8 in gap between cleat sections only, for thermal movement
D
Coping lengths lapped over the notched end, with no gap between them
E
Sealant at a lap or end where the specification calls for it, continuous with no gaps
F
Finish undamaged, with no repair marks
G
Washered screws through the roof-side leg, 12 in on center (Drexel guide)
Schematic, not to scale, and no dimensions are given except the 1/8 in cleat gap and the 12 in screw spacing. The cleat, nails, gap and screws are from Drexel's Econo Coping guide, not AFS rules, and the checks are a partial list: follow the full guide. Hems curl to the inside.

Sources

Videos for this lesson

What this video shows: A coil supplier on what triggers a claim under a metal-roof substrate or paint warranty and how a claim is handled; one maker's process.

Video: Metal Roofing Warranty Claim Process: Substrate and Paint Warranties by The Metal Roofing Channel, on YouTube. Chosen from the video's published description.

Glossary

Oil-canning
Visible waviness of a flat metal face. AFS's Failure Atlas lists material too thin for the flat width, restraint against thermal movement and wide unbroken flat faces as causes; whether it is a defect depends on the specification.
Three-bucket test
This course's name for sorting an observed problem into punch work the contract still owes, a warranty item, or a maintenance item. UFGS 01 78 00 asks the contractor to separate warranty deficiencies from normal wear, improper operation and lack of maintenance.
Cleat gap
In Drexel's Econo Coping guide, a 1/8 in gap left between cleat sections for thermal movement. The coping lengths themselves are lapped over a notched end, with no gap between them.
Logbook of roof visits
A record MBCI advises keeping of every visit to the roof and the reason for the visit, so that later inspections and claims can show what was done and when.