Field Notes
Wall counterflashing termination records before leak investigation closeout
A useful leak closeout packet ties the complaint boundary, wall area, base flashing termination, counterflashing, reglet or surface-mounted detail, sealant, repair, retest, photos, limits, and closeout decision together.
Direct answer
Before closing a leak investigation at a wall counterflashing termination, record the complaint ID, interior symptom location, roof area, wall elevation, tested boundary, weather history, investigation scope, excluded areas, approved roof and wall details, membrane type, base flashing height and condition, termination bar or fastening condition, water block or mastic where required, counterflashing type, reglet or surface-mounted condition, sealant and backer rod status, laps, corners, end dams, adjacent cladding or through-wall flashing conditions, test method, repair, retest, photos, remaining limitations, responsible reviewer, and closeout decision.
A note that says no leak observed is not enough. The next reviewer needs to know whether the team actually checked the base flashing termination, whether the counterflashing was removed or only viewed, whether the test included the wall above, whether a repair was retested, and whether any adjacent wall or roof condition stayed outside the investigation.
Use this as documentation guidance only. The roof consultant, designer, manufacturer, AHJ, owner, warranty provider, water-test professional, and site safety plan control the actual investigation, repair, test method, and closeout decision.
Leak closeout needs a boundary
Leak investigations fail as records when they do not define the boundary. A leak at a ceiling line below a parapet might come from the roof membrane, base flashing termination, counterflashing, wall crack, window head, coping, scupper, mechanical curb, condensation, or another route. Closing the ticket requires a clear statement of what was investigated and what was not.
That boundary should include the interior symptom, exterior area, wall elevation, roof gridline, time period, weather pattern, test area, repair area, and follow-up observation period. A dry follow-up after one repair may be useful, but it is not a guarantee that every possible leak source on the wall has been eliminated.
If the investigation was intentionally narrow, say so. A record can close the repaired counterflashing segment while leaving a window sealant crack, wall control joint, coping joint, or cladding question assigned to a different reviewer.
Start with the leak investigation record
The closeout packet should start with the complaint trail. Record the ticket number, interior photos, ceiling or wall location, first reported date, rain or wind direction if relevant, prior repairs, maintenance history, roof plan markups, and who set the investigation scope.
Then record the investigation method. That may include visual observation, controlled water testing, infrared, electrical impedance, electronic leak detection, destructive opening, selective counterflashing removal, or another method chosen by the qualified reviewer. Do not rewrite the method after the result is known.
Also record the method limits. If the test did not include the wall above the counterflashing, the coping, windows, scupper, mechanical curb, or adjacent roof area, write that in the closeout packet. A bounded closeout is stronger than a broad claim nobody can defend.
Identify the wall and flashing assembly
Name the assembly before writing the conclusion. Record the wall type, cladding, parapet or curb condition, roof membrane, base flashing, counterflashing type, termination bar, reglet, sealant, fasteners, and adjacent through-wall flashing or cladding interface.
Counterflashing terms matter because the evidence changes by detail. A reglet-mounted counterflashing, surface-mounted counterflashing, two-piece assembly, cap flashing, skirt flashing, coping termination, and rooftop-unit counterflashing do not leave the same photo record.
If counterflashing was removed for inspection, photograph what was visible behind it. If it was not removed, say that. Do not write hidden termination verified when the record only shows the finished metal face.
Record base flashing termination
The base flashing termination is often the disputed line. Photograph the base flashing height, adhesion, wrinkles, fishmouths, seams, corners, angle changes, termination bar, fasteners, water block or mastic where required, and any membrane liner below sheet metal flashing components.
If the termination bar was loose, fasteners were missing, mastic was discontinuous, membrane was split, or the substrate was wet or uneven, keep that failed condition in the packet. The repair record should show why the team changed the condition, not just the clean final surface.
Do not make a manufacturer acceptance statement from a field note. Record the approved detail, observed condition, repair, and reviewer. Let the manufacturer, warranty provider, consultant, designer, or owner make the acceptance decision required by the project.
Record counterflashing, reglets, and sealant
Counterflashing evidence should show more than a clean piece of metal. Record whether the condition is reglet-mounted, surface-mounted, two-piece, cap flashing, skirt flashing, or another project detail. Photograph laps, end dams, corners, fasteners, wedges, reglet sealant, cap sealant, backer rod, corrosion, open ends, displaced metal, and movement joints.
Sealant is evidence, not a magic closeout word. Record joint profile, adhesion failure, splitting, missing sealant, wet substrate, incompatible material questions, and any cure or wait time controlled by the product or reviewer.
Pay close attention to changes in wall condition. A counterflashing repair may stop water at the roof-to-wall termination while a wall crack, cladding joint, through-wall flashing defect, window head, or coping joint still needs a separate building enclosure answer.
Keep the test, repair, and retest chain
Leak closeout should preserve the sequence. Record the complaint, initial observation, test method, test boundary, weather, water source, duration if controlled by the investigator, observed leakage or no leakage, repair, cure or wait period, retest method, retest boundary, retest result, and remaining limitations.
Do not delete the failed test after the repair passes. The failed condition explains why the repair was made and what the retest actually proved.
If testing was not performed, state the closeout basis. The basis may be visual repair acceptance, dry weather follow-up, owner direction, manufacturer direction, scheduled monitoring, or consultant recommendation. Silence makes the closeout weaker than a clear limitation.
Minimum counterflashing closeout packet
Use the consultant report, manufacturer form, service ticket, warranty form, or owner closeout system first. Add this field packet where the required form does not connect the counterflashing evidence to the closeout decision clearly enough.
| Record item | Field detail | Why it matters |
|---|---|---|
| Complaint boundary | Ticket ID, interior location, first reported date, weather history, photos | Connects the exterior work to the actual leak report |
| Exterior scope | Roof area, wall elevation, gridlines, parapet, curb, tested boundary, exclusions | Prevents closeout from being applied beyond the investigated area |
| Approved basis | Roof detail, wall detail, repair instruction, manufacturer detail, consultant direction | Shows what the field condition was checked against |
| Base flashing | Membrane type, height, adhesion, seams, corners, termination bar, fasteners, mastic | Documents the line most often hidden by counterflashing |
| Counterflashing | Reglet-mounted, surface-mounted, two-piece, skirt, cap, laps, end dams, corners | Shows the water-shedding cover and how it was left |
| Reglet and sealant | Reglet condition, wedges, cap sealant, backer rod, adhesion, splits, missing material | Captures the visible seal line before it is called closed |
| Adjacent wall conditions | Cracks, cladding joints, windows, coping, through-wall flashing, scuppers, curbs | Separates roof termination repairs from other possible leak paths |
| Test method | Visual observation, water test, infrared, impedance, ELD, destructive opening, limits | Defines what the investigation can and cannot prove |
| Repair and retest | Failed condition, repair, cure or wait period, retest boundary, result, photos | Keeps the correction chain reviewable |
| Closeout decision | Closed, partially closed, monitoring, held, assigned to wall review, responsible reviewer | Prevents a narrow repair from being treated as a full-building answer |
Before leak investigation closeout checklist
Run this check before closing a leak ticket tied to wall counterflashing or base flashing termination.
- Confirm the complaint ID, interior symptom location, roof area, wall elevation, and closeout boundary.
- Attach or reference the approved roof detail, wall detail, repair instruction, manufacturer detail, or consultant direction.
- Photograph the wall-to-roof area wide enough to show location and close enough to show the termination condition.
- Record base flashing type, height, adhesion, seams, corners, termination bar, fasteners, and water block or mastic where required.
- Record counterflashing type, reglet or surface-mounted condition, laps, end dams, corners, fasteners, wedges, and movement joints.
- Photograph cap sealant, backer rod, adhesion failure, splits, gaps, wet substrate, corrosion, or missing material before repair.
- Document adjacent wall, cladding, window, coping, scupper, curb, and through-wall flashing conditions included or excluded from the scope.
- Record the test method, test boundary, weather, water source, observed leakage, and limitations.
- Keep failed tests, failed photos, repair photos, cure or wait period, and retest photos in the packet.
- State whether the ticket is closed, partially closed, held for monitoring, or assigned to another reviewer.
- Do not close the whole leak complaint if the repair only covers one counterflashing segment.
Weak and strong notes
Weak note: counterflashing sealed, leak closed.
That note does not show the complaint boundary, wall area, base flashing condition, counterflashing type, reglet or sealant status, test method, repair, retest, photos, remaining limits, or closeout authority.
Stronger note: Leak ticket R-214 at Level 3 corridor grid D/5 was investigated at Roof Area B west wall from grids D/4 to D/6. Interior stain, exterior wall elevation, existing surface-mounted counterflashing, base flashing termination bar, and cap sealant were photographed before repair. Water test by consultant was limited to the west wall counterflashing run and did not include window W-3 or coping above. Leakage reproduced at open cap sealant and loose fastener at grid D/5. Counterflashing was lifted at the failed segment, wet sealant removed, termination bar fastener replaced, compatible sealant installed after substrate preparation, and metal reset. Repair was retested over the same boundary with no leakage observed during the test period. Window W-3 sealant crack remains excluded and assigned to facade review. Closeout applies only to the repaired counterflashing segment from D/4 to D/6.
The stronger note works because it records the scope, failed condition, repair, retest, and limitation. It does not pretend the whole wall was cleared.
Common mistakes
The first mistake is closing the ticket from a dry follow-up only. Dry weather or no reported leak after a repair is useful information, but it does not explain what was inspected, what was repaired, or what was excluded.
The second mistake is photographing only the finished metal and sealant. Final photos rarely prove the base flashing termination, water block, fasteners, reglet condition, or hidden substrate behind counterflashing.
The third mistake is deleting the failed condition. Keep the open sealant, loose fastener, wet substrate, split membrane, missing lap, or failed test so the repair decision has context.
The fourth mistake is treating every wall leak as a roof leak. Counterflashing may be involved, but water can also enter through wall cracks, cladding joints, windows, coping, scuppers, curbs, condensation, or below-grade paths.
The fifth mistake is overclaiming the test. Infrared, impedance, water testing, and electronic leak detection have method limits. Record the test boundary and what the method can support.
Questions that come up
Can a dry follow-up close the leak ticket? It can be part of closeout if the responsible reviewer accepts it, but the record should still show the repair, observation period, weather context, and limits.
Does counterflashing repair prove the wall is fixed? No. It proves only the documented repair and retest or observation boundary. Wall cracks, windows, cladding, through-wall flashing, coping, and other conditions may need separate review.
Should counterflashing be removed for every investigation? Not from a generic checklist. Removal is controlled by the consultant, owner, manufacturer, warranty provider, safety plan, and repair scope. If it was not removed, the record should say so.
Does electronic leak detection or infrared prove vertical terminations? Not automatically. Some methods have limits around vertical surfaces, conductive materials, wetness, access, and test setup. Record what method was used and what it included.
What if the leak cannot be reproduced? Record the attempted method, boundary, weather, duration if controlled by the investigator, result, limitations, and next action. Do not write source eliminated unless the responsible reviewer supports that conclusion.
Compliance and safety limits
This field note is not a roof design, wall design, leak-source guarantee, water-test procedure, electronic leak-detection procedure, infrared protocol, warranty approval, manufacturer inspection, code ruling, or instruction to remove counterflashing. The project documents, approved details, consultant, designer, manufacturer, AHJ, owner, warranty provider, test professional, and qualified reviewers control the work.
Do not use this checklist to bypass fall protection, warning lines, guardrails, personal fall arrest systems, roof-opening protection, wall-opening protection, ladder and access controls, hoisting controls, weather limits, electrical safety for testing equipment, water discharge controls, public protection, mold or interior protection, sharp-edge handling, sealant safety data, PPE, or site-specific safety procedures. The record preserves the closeout decision trail. It does not authorize unsafe access or unapproved testing.
Sources checked
- WBDG, UFGS 07 60 00 Flashing and Sheet MetalUsed for counterflashing, reglets, base flashing, sheet metal shop drawings, sealants, laps, expansion joints, and flashing details.
- WBDG, UFGS 07 54 23 Thermoplastic Polyolefin RoofingUsed for wall flashing, base flashing termination, termination bars, sheet metal flashing over termination bars, membrane liner, temporary flashing, and coordination with flashing and sheet metal requirements.
- WBDG, UFC 3-110-03 RoofingUsed for roofing QA, closeout, leak handling, consultant involvement, photographs, and contract document context.
- ASTM D7053/D7053M-17(2024)e1, Standard Guide for Determining and Evaluating Causes of Water Leakage of Low-Sloped RoofsUsed for leak investigation methodology, professional scope, preliminary assessment, expectations, adjacent construction, limitations, and report boundaries.
- ASTM D7186-25, Standard Practice for Quality Assurance Observation of Roof Construction and RepairUsed for roofing QA observation, documentation, monitoring, recording, reporting, and contract-document comparison themes.
- Holcim Elevate, UltraPly TPO Roofing Systems Application GuideUsed for current manufacturer guidance on wall and parapet flashing, membrane securement at angle changes, termination requirements, sheet metal work, and watertight membrane-before-metal boundaries.
- Holcim Elevate, UltraPly TPO Roofing Systems Guide for DesignersUsed for current design-guide detail lists covering termination bar, reglet counter-flashing, surface-mounted counterflashing, counter-flashing at rooftop units, wall flashing, and base tie-in details.
- Carlisle SynTec, U-9 TPO Membrane Termination DetailsUsed for manufacturer detail context around TPO membrane termination and counterflashing.
- IIBEC, The Leak Stops Here: Understanding the Methodology of Leak Detection for Roofing and Waterproofing SystemsUsed for leak-detection method context, method limitations, in-service leak evaluation, and the boundary between testing and visual observation.
- ICC Digital Codes, 2024 International Building Code, Chapter 15Used for current model-code context around roof assemblies and AHJ control.
- OSHA, 29 CFR 1926.501, Duty to Have Fall ProtectionUsed for roof-work and wall-edge fall-protection safety boundaries.