Roof curb cricket warranty leak-walk photo record

Direct answer

Before a warranty leak walk at a non-hatch roof curb, record the curb ID, roof area, equipment served, leak or warranty item, approved roof detail, manufacturer or consultant direction, roof type, curb type, upslope cricket or saddle, upslope diverter, side drainage path, curb base flashing, membrane termination, counterflashing return, corner treatment, fastener or termination condition, ponding stain, dirt ring, debris condition, condensate discharge, nearby drain or scupper, prior patch, traffic damage, interior symptom, repair action, follow-up test, photos before and after correction, remaining limits, reviewer, and release or hold decision.

The photo record should prove whether the roof curb condition was ready for the warranty walk, not whether the roof will never leak. A good packet shows the water path around the curb, the top edge protection at the curb, the evidence of standing water, and the exact reason the item was released, held, assigned to a roof contractor, assigned to the equipment contractor, or sent back to the manufacturer or consultant for direction.

Use this as documentation guidance only. The roof-system manufacturer, roof consultant, designer, AHJ, owner, warranty provider, water-test professional, and site safety plan control the actual curb, flashing, cricket, saddle, counterflashing, repair, test, warranty, and closeout decision.

What this record covers

This record is for equipment curbs, mechanical curbs, skylight curbs, smoke-vent curbs, framed roof openings, and similar non-hatch curb conditions that interrupt drainage on a low-slope roof. The emphasis is the warranty leak walk: what the reviewer can see, photograph, date, and compare with the approved basis before closing or holding a warranty item.

The record is not an installation manual. It does not size a curb, design a cricket, choose a membrane, approve a metal roof retrofit, or interpret a manufacturer warranty. It gives the field team a disciplined way to collect the facts that tend to disappear after cleaning, patching, retesting, or replacing sheet metal.

Separate it from the hatch record

A roof hatch leak walk has hatch-product issues: cover, latch, hinge side, gasket, hold-open arm, access, ladder, and fall exposure. This record intentionally stays with the curb as a roof obstruction and drainage feature. Do not let a mechanical curb review become a second hatch inspection.

If the curb is actually a roof hatch, use the hatch-curb record and attach this drainage record only for the cricket, saddle, ponding, or counterflashing evidence that is not covered there. If the item is a wall termination, use the wall counterflashing closeout record. If the roof is still pre-membrane, use the tapered insulation record.

Start with the approved basis

Photograph the approved detail, submittal, manufacturer response, consultant sketch, warranty punch item, or roof plan sheet before photographing the roof. The image does not need to include confidential pricing or unrelated project pages. It only needs to tie the curb in front of you to the basis being used for the walk.

At minimum, capture the curb tag or equipment tag, roof area, grid line or plan reference, membrane system or metal roof system, roof warranty provider, warranty number if the owner authorizes it, and the document date or revision used for the review. When the walk is disputed later, the first question is usually not what the stain looked like. It is what rule the reviewer thought applied.

If the approved basis is a detail sheet, photograph the title block and the actual curb condition separately. Do not rely on a single image where the detail is too small to read and the roof condition is too far away to evaluate. If the basis is a manufacturer email or consultant field note, save it in the project file and use the roof photos to show how the written direction was applied at that exact curb.

Map the curb before close photos

Begin with wide photos that place the curb in the roof drainage field. Stand far enough back to show upslope direction, downslope direction, nearby drains, scuppers, parapets, expansion joints, adjacent equipment, walkway pads, and any path where water can be trapped against the curb. Add one roof-plan markup if the photo alone cannot show direction.

Then move to each face of the curb. Label the sides by drainage orientation, not just north, south, east, and west. The field reader needs to know which side receives water, which side diverts water, and which side is supposed to shed water away from the opening.

A good map sequence uses at least four distances. Start with the roof-area view, step closer to show the curb and nearest drainage features, move to each curb face, and finish with close photos of the condition being released or held. This sequence prevents a close-up of sealant, a dirt ring, or an open return from becoming detached from the actual roof area.

Record the cricket or saddle

The cricket or saddle is the first priority because it controls whether water reaches the curb as a moving sheet, a split flow, or a pocket that holds silt. Photograph the upslope high point, the two valleys created by the cricket, the tie-in to the field membrane or panel, and the transition where water leaves the saddle toward a drain, scupper, or open roof field.

Do not describe the cricket as adequate unless the responsible reviewer has accepted the detail. The photo record should use observable language: present, missing, buried by debris, patched, cut by another trade, ponding at valley, dirt line at base, open corner, raised lap, or unable to verify because equipment blocks access. That language lets the warranty reviewer decide without pretending the photo taker designed the roof.

When the cricket is built with tapered insulation, include the valley lines and the transition back to the field. When the cricket is part of a metal curb, show the welded or formed diverter and the flanges around it. When the cricket is absent, show the entire upslope face so the missing feature is not treated as a camera angle problem.

Show the upslope diverter

On a metal roof curb, the upslope diverter is often the feature that keeps water from building against the curb. On a single-ply roof, the same review may be a tapered cricket, saddle, or field-built membrane transition. In either case, photograph the high side of the curb before cleaning, because the first visible evidence may be a small dirt crescent or a wet line that disappears after the walk starts.

The record should show whether the diverter sends water around both sides or whether one side is blocked by panel ribs, equipment legs, conduit, sleepers, service lines, or patch material. A diverter that works only in a close-up can still fail as a field condition if water cannot leave the side path.

Use paired photos here. One photo should show the diverter from above or upslope. Another should show the side path where water is supposed to go. If the side path ends at a parapet, raised seam, pipe support, debris pile, or low spot, the packet should show that end condition rather than assuming water keeps moving.

Metal roof curb flow

Metal curb sources treat the curb as part of the roof system, not a loose accessory sitting on top of it. The field record should show whether the curb is lapped with water flow, whether the upslope side is treated differently from the downslope side, and whether the side clearances leave room for diverted water to pass without head pressure.

For standing-seam or other low-slope metal roof work, photograph the relationship between panel ribs, panel ends, curb flanges, cap strips, sealant locations, fastener lines, and the diverter. If the installation is a retrofit, record who performed the roof-system work and whether the roof manufacturer or warranty provider gave direction before the curb was installed or repaired.

A metal roof leak walk should also show whether the curb sits in a normal drainage pan, at a lap, at a rib transition, or near another roof interruption. Water that is already concentrated by a nearby higher roof, valley, or equipment cluster can overload a curb detail that looks acceptable in isolation. The photo record should show the approach path, not only the curb itself.

Clearance matters

Do not reduce clearance evidence to a yes-or-no note. Photograph any tight throat at the upslope diverter, any panel rib that traps water against the side of the curb, and any place where sealant has become the only visible defense against standing water. Include a ruler when clearance is part of the hold reason.

The Metal Construction Association source gives specific clearance examples for low-slope metal curbs, including space between panel ends and the upslope diverter and space between panel ribs and the curb wall. Do not apply those values blindly to every roof. Use them to know what to photograph and to trigger manufacturer review when the curb does not leave a visible drainage path.

Base flashing evidence

For single-ply curb flashing, photograph the base flashing from the field membrane up the vertical face, including corners, laps, welds, patches, terminations, reinforced curb flashing products, and any exposed edge that relies on sealant. On a built-up, modified, coating, or metal system, use the system terms from the approved detail, but keep the same photo logic: field-to-curb transition, corner, top edge, and return.

Do not let the camera skip the bottom of the curb. Many dispute photos show a clean counterflashing face and miss the wrinkled base flashing, open fishmouth, repair smear, scuffed transition, or ponding dirt line at the field. The warranty walk needs the place where water first reaches the curb, not just the place where sheet metal looks finished.

If the base flashing was repaired, use the same camera position for before and after photos. A repair photo from a different angle can hide whether the same corner, lap, or transition was corrected. Mark the repair area in the note with side, elevation, or clock position so the warranty reviewer can match the repair to the failed condition.

Counterflashing return

Photograph the counterflashing return as a water-shedding element, not as trim. Show the face, end return, exposed end, fasteners, laps, reglet or receiver, sealant bead where required by the detail, and the relationship between counterflashing and the membrane termination. A beautiful face photo is weak evidence if the return end is open to wind-driven water.

When a detail uses metal counterflashing or slip flashing by others, record that boundary plainly. The reviewer should be able to see which component is roofing membrane, which component is sheet metal, which component belongs to the equipment curb, and which component was not opened during the leak walk.

End returns matter because wind-driven rain and sideways flow do not respect the front elevation of a detail. Photograph the left and right return ends, not just the broad face. If a return is hidden behind equipment clearance, say that access was blocked and identify who must remove panels, open covers, or provide access if the warranty provider requires it.

Corners and vertical seams

Corners deserve their own photos because they concentrate cuts, welds, folded membrane, prefabricated corners, sealant, and movement. Take one straight-on photo of each outside corner and one angle photo that shows the corner's relationship to the field membrane. Add a close photo of any patch, fishmouth, crease, split, scuff, or visible contamination.

For curb-wrap products or prefabricated corners, record the product type only if it is visible from packaging, submittals, or the detail set. Do not guess the brand from color or shape. The point is to show that the corner condition exists and is reviewable, not to assign hidden material history from a photo.

Top edge protection

The top edge of the curb flashing is a common argument point. The record should show the termination bar, reglet, receiver, cap, counterflashing, compression bar, fastener spacing where visible, sealant condition where visible, and any interruption at corners or equipment legs. If the top edge is concealed, photograph the concealed condition and state that the membrane termination was not opened.

This is also where scope boundaries matter. A roof warranty provider may cover membrane and roof-system workmanship but treat non-roof sheet metal, equipment curbs, nailers, service damage, owner maintenance, or unauthorized modifications differently. The photo record should preserve the boundary instead of smoothing it over.

Sheet metal is not proof by itself

A counterflashing cover can hide an open termination, wet insulation, missing sealant, or damaged membrane. A field record should never say the flashing is watertight because the metal face is continuous. It should say what was visible, what was concealed, what detail was referenced, and whether the responsible party accepted the concealed condition without removal.

Manufacturer application guides commonly distinguish sheet metal work from the membrane waterproofing. Use that distinction in the closeout language. If the leak walk released the membrane repair but did not review the equipment curb cap, that must be visible in the decision note.

Ponding evidence

Ponding around a curb is evidence, not background clutter. Photograph standing water, drying rings, dirt lines, biological staining, silt buildup, leaf dams, ice marks, depressed membrane, deflected panels, or sediment left at the cricket valley. Include the time, recent weather, and whether the photo was taken during rain, after rain, after cleaning, or during a dry walk.

Several roof sources use 48 hours as the point where ponding becomes a serious review item, while one maintenance guide frames good practice as drainage or evaporation within 48 to 72 hours after rain. Do not turn those references into a job-specific ruling unless the contract or warranty says so. Use them to make the timing of the field evidence clear.

If the roof is dry during the walk, still photograph the staining pattern. Dirt rings, algae staining, sediment, wrinkled membrane, depressed areas, and clean waterlines can show where water has been sitting. Note whether the stain is at the upslope face, side path, cricket valley, drain path, or unrelated low point. That location determines whether the curb record supports a curb repair, drainage review, or maintenance action.

Time stamps after weather

A ponding photo without time context is easy to dismiss. Record the date and time of the storm if known, date and time of the photo, weather at the time of the walk, and whether drains, scuppers, or gutters were clear. If the roof was photographed less than 48 hours after rainfall, say so. If water remained longer, say how that was verified.

Do not rely on memory for this item. A simple weather note, site log, or owner maintenance log can separate a fresh rain photo from a persistent drainage problem. That difference matters when a warranty reviewer is deciding between cleaning, monitoring, tapered repair, auxiliary drainage review, or manufacturer consultation.

When the walk happens during active weather, keep the record modest. Say water was observed during rainfall, identify where it collected, and assign a follow-up after the roof has had time to drain. Do not turn an active-rain photo into a prolonged-ponding claim unless a second time-stamped observation supports it.

Debris and condensate

Debris around a curb can create the same visible stain as a poor cricket. Photograph leaves, packaging, gravel, fasteners, filter media, abandoned sealant tubes, condensate discharge, hose discharge, or service debris before it is moved. Then photograph the same area after cleaning if cleaning is part of the closeout.

Do not let cleaning erase the record. If debris caused or worsened ponding, the before photo supports a maintenance decision. If ponding remained after debris was removed, the after photo supports a drainage review. Both are more useful than a clean final photo with no cause history.

Interior leak tie

When the walk responds to an interior leak, link the roof evidence to the interior symptom without claiming causation too early. Photograph the ceiling stain, floor protection, leak bucket, equipment below, grid line, room number, or owner report, then photograph the roof curb area that is being reviewed. Use plan marks if the roof and interior do not line up obviously.

The closeout note should separate observed alignment from proven leak source. Good language is: interior stain reported below RTU-3 curb area, roof walk reviewed RTU-3 upslope cricket and curb flashing, no destructive opening performed, warranty provider to determine coverage. Bad language is: curb leak confirmed, unless an authorized test or investigation actually confirmed that conclusion.

Prior patches

Old patches tell the reviewer where earlier people thought the problem was. Photograph sealant smears, coating spots, repair membrane, unsupported patches, cut-out marks, fastener heads, abandoned probe marks, and color differences in membrane or metal. Show whether each patch is on the field membrane, base flashing, counterflashing, curb cap, equipment curb, or adjacent penetration.

Do not clean up the language to protect a prior repair. If a patch is temporary, undocumented, incompatible, open, cracked, or outside the roof warranty scope, say that it was observed and identify who must review it. A vague note that repairs are complete is less useful than a precise note that the patch remains a hold item.

Retest limits

If the walk includes a water test, hose test, flood check, or monitored rain event, record the method, duration, test boundary, starting condition, who authorized it, who watched the interior, and what areas were excluded. Never aim water into electrical equipment, unsafe openings, or assemblies the responsible party has not approved for testing.

A follow-up photo should show the same curb face before and after the repair or test. If no leak appears during the test, the record should say no leakage was observed during the stated test, not that the roof cannot leak. That wording keeps the decision tied to the evidence.

Traffic and service work

Equipment curbs attract service traffic. Photograph walkway pads, service paths, crushed insulation areas, membrane scuffs, dropped tools, panel dents, torn patches, missing fastener caps, and cable or hose routes that cross the curb drainage path. Include any evidence that recent HVAC, electrical, controls, or maintenance work touched the roof system.

Owner manuals often place roof traffic, service logs, and rooftop unit maintenance inside the maintenance record. Use that structure. The warranty leak walk should not close a membrane defect while ignoring that a recent service visit cut the counterflashing sealant or blocked the cricket valley with loose materials.

Leak notification record

Warranty manuals often require prompt notice after discovering a leak. The field packet should include the owner report date, the warranty provider notice date if available, the person who submitted the leak form, the guarantee or warranty number if authorized, and the site contact for access. Do not publish private owner data in the public record; keep it in the project file.

If the leak walk is not the first notice, record that too. A late walk may still be useful, but the warranty provider may need to separate new damage, maintenance history, old leak reports, and repairs made before the provider could inspect.

Keep the notice record factual. The field team does not need to argue whether notice was timely while standing on the roof. It needs to preserve what was reported, when the walk occurred, what condition was visible, and which party will decide how the warranty language applies.

Modification boundary

A new curb or modified curb can change the roof system. Record whether the curb was original construction, a warranty-period alteration, a retrofit after occupancy, or a service replacement. Photograph any permit tag, work order, alteration form, manufacturer direction, approved contractor note, or consultant observation that ties the modification to the warranty process.

If no alteration approval is available, do not invent one in the closeout language. Say approval not provided in the field packet and assign review to the owner, warranty provider, roof consultant, or manufacturer. That is stronger than a release that later fails because the curb work changed the guaranteed roof system without review.

This matters most when rooftop equipment has been swapped after the original roof warranty was issued. A curb adapter, taller curb, new curb cap, added service penetration, condensate line, control conduit, or equipment screen can alter drainage and flashing responsibilities. The warranty walk should show what changed and who accepted the change.

Minimum curb leak-walk packet

Use the manufacturer's warranty process, consultant report, owner work order, and project closeout form first. Add this packet when those forms do not connect roof-curb drainage, counterflashing, ponding, and photo evidence clearly enough for a closeout decision.

Warranty leak-walk checklist

Use this checklist as a field prompt. Keep it with photos, plan markup, weather notes, and the responsible person's release or hold decision.

• Curb ID, equipment served, roof area, walk date, reviewer, and warranty item recorded.
• Approved roof detail, curb detail, manufacturer direction, or consultant basis photographed.
• Wide roof photos show upslope, downslope, nearby drains, scuppers, and adjacent equipment.
• Upslope cricket, saddle, or diverter photographed before cleaning or repair.
• Side drainage paths photographed where water leaves the curb area.
• Metal roof panel ribs, curb flanges, cap strips, fastener lines, and shingled flow direction recorded where applicable.
• Base flashing, corners, laps, welds, patches, and field-to-curb transition photographed.
• Counterflashing face, return, exposed end, receiver or reglet, sealant, and concealed limits recorded.
• Ponding evidence, dirt rings, silt, debris, condensate discharge, and drain condition photographed with time context.
• Interior symptom or owner leak report linked to the roof area without overstating causation.
• Prior patches, temporary repairs, coating spots, or undocumented repairs photographed.
• Traffic, service work, walkway pads, scuffs, and damage from other trades recorded.
• Repair photos show before and after views from the same side of the curb.
• Retest method, duration, watcher, weather condition, and excluded areas recorded if testing occurred.
• Warranty notice, alteration approval, or modification review status captured where available.
• Final decision states released, held, partial release, monitor, or assigned party with reasons.

Strong field example

A strong packet starts with a roof-plan markup showing RTU-7 on Roof Area B. The first photo shows the approved TPO curb flashing detail and the warranty punch item. Wide photos show water flow from the high roof area toward the curb, the upslope cricket, both side paths, the nearby drain, and a dirt line at the right cricket valley.

Close photos show the base flashing at each curb face, the reinforced corners, the surface counterflashing return, and a small open sealant gap at the right return end. The record states that water remained at the valley 54 hours after rainfall based on site log and photo time stamp. The decision holds the curb for roof contractor repair and manufacturer review of the counterflashing return before warranty release.

Weak field example

A weak packet has three close photos of shiny counterflashing and a note that the curb looks good. It does not identify the roof area, show the upslope condition, record the cricket, show the side drainage path, mention the ponding ring visible at the base, or state whether the sheet metal was part of the roof warranty.

That packet may look tidy, but it cannot support a warranty leak-walk decision. If the leak returns, nobody can tell whether water was trapped behind the curb, whether the termination was concealed, whether debris was removed before photos, or whether the reviewer meant to release the membrane, the counterflashing, the equipment curb, or the entire leak complaint.

Common misses

The most common miss is photographing the curb like a product and not like a drainage obstruction. The camera follows the metal face but never turns upslope. That misses the cricket, saddle, diverter, dirt ring, and side channel that explain why water may be standing at the curb long before it reaches the visible counterflashing.

The second miss is closing concealed conditions without saying they were concealed. If the counterflashing was not removed, write that. If the equipment blocks one side, write that. If the roof was dry because someone cleaned it ten minutes earlier, write that. A warranty closeout should not be built on silent gaps.

Hold criteria

Hold the item when the approved basis is missing, the curb cannot be identified, the upslope drainage path is not visible, the cricket or saddle is missing where required by the responsible detail, standing water remains beyond the time limit being used for the project, debris blocks the side path, the counterflashing return is open, the membrane termination is concealed and disputed, or a recent alteration lacks warranty-provider review.

Also hold when the field team is being asked to decide outside its authority. Examples include structural curb adequacy, equipment curb fabrication, metal roof manufacturer acceptance, code interpretation, destructive investigation, unsafe access, electrical exposure, or whether a non-roof component caused the interior symptom. A hold is useful when it names the missing decision maker.

A hold should not be a vague rejection. It should name the curb, condition, evidence gap, required action, and reviewer needed. For example: hold RTU-7 curb because right counterflashing return is concealed by equipment panel and ponding stain remains at right cricket valley 54 hours after rain; roof contractor and warranty representative to review after access is provided.

Release wording

Good release wording is narrow. Example: RTU-7 curb flashing repair reviewed on Roof Area B. Photos show base flashing patch, counterflashing return sealant repair, cleared cricket valley, and no leakage observed during 20-minute hose test watched from Room 214. Release limited to the photographed RTU-7 membrane repair. Ponding monitoring remains open after next qualifying rainfall.

That language gives the owner a usable decision without promising more than the evidence supports. It also keeps monitoring, sheet metal, equipment, and untested drainage issues from being closed by accident.

Metal roof special notes

For low-slope metal roofs, photograph the curb as an integrated roof condition. Show the curb's relationship to panel ribs, standing seams, roof slope, panel cuts, end laps, cap strips, sealant tape, exposed fasteners, panel clips where accessible, and any blocking or dissimilar material visible at the opening. The record should make it clear whether water is being asked to run over, under, or around each curb edge.

If the curb is field located or retrofitted, the record should say who cut the opening and who tied the curb back into the roof. The roof installer or qualified roofing contractor may need to be part of the decision, especially where the curb sits in a hydrostatic low-slope panel system and poor side clearance can build water pressure.

Single-ply special notes

For TPO, PVC, EPDM, modified bitumen, and related membrane systems, photograph the field membrane, base flashing, corner treatment, vertical face, top termination, and counterflashing as separate elements. Manufacturer guides often have specific details for curb flashing, reinforced corners, reglet counterflashing, surface-mounted counterflashing, and termination bars.

Do not mix brands in the field note unless the system record supports it. A white membrane photo does not prove which product was used. Use the warranty file, submittal, product label, or manufacturer report for product identification, and use photos to show visible condition.

For membrane systems, contamination matters in the photo record. Grease from rooftop equipment, primer spills, old asphalt contact, incompatible sealant, bird screen fasteners, and service platform scuffs can all change the repair conversation. Photograph the material at the curb and the likely source of contamination in the same sequence.

Do not overclaim

The record should not say code compliant, warranty approved, leak source confirmed, manufacturer accepted, or repair complete unless the authorized party made that decision and the project file includes it. Most field photo records should say observed, photographed, held, released within stated scope, assigned, or sent for review.

Avoid design conclusions such as cricket slope adequate, drainage sufficient, or counterflashing watertight unless the responsible designer, consultant, manufacturer, or warranty reviewer has made that call. The field record should preserve evidence so those decisions can be made cleanly.

Reviewer questions

Ask these questions before the walk closes: What curb is this? What roof system is it in? What warranty item or leak report is being reviewed? What approved detail controls the curb? Does the upslope side show a cricket, saddle, or diverter? Where does diverted water go? Is there ponding evidence, and when was it photographed after weather?

Then ask: What is membrane, what is sheet metal, what is equipment, and what is concealed? Was there a repair? Was there a test? Was there an alteration? Who has authority to release each part? If the packet cannot answer those questions, it is not ready for a warranty leak-walk closeout.

Photo naming

Name photos so they survive outside the punchlist app. A useful pattern is date, roof area, curb ID, side, condition, and sequence number. Example: 2026-06-09_RoofB_RTU7_upslope-cricket_ponding-ring_03.jpg. Keep the project naming convention if one already exists, but do not accept names that only say image1 or leak photo.

Pair every close photo with at least one wide photo. A future reviewer should be able to locate the curb without calling the person who took the picture. If the camera app stores GPS or time metadata, treat that as support, not a substitute for visible labels and notes.

Safety and access

Do not step around an open roof curb, unstable hatch, unguarded skylight, icy membrane, wet metal panel, energized equipment, or active mechanical service area just to get a better photo. Use the site safety plan, fall-protection requirements, lockout rules, and roof access controls. If an area cannot be photographed safely, record the access limit and assign it to the party that can make it safe.

The field record is not worth an unsafe walk. A hold due to unsafe access is a valid closeout result when it names the missing control: guardrail, warning line, lift, escort, shutdown, weather delay, or manufacturer presence.

Safety notes should stay specific. Instead of saying access unsafe, say west side of RTU-7 curb not photographed because the service panel was open inside the warning-line offset and the roof was wet. That gives the next reviewer enough information to plan safe access instead of sending another person into the same condition.

Final decision record

End the packet with one clear decision. Released means the photographed item was accepted within stated limits. Held means specific evidence, repair, access, authority, or test information is missing. Partial release means one component was accepted and another remains open. Monitor means the next rain, service event, or inspection interval must be documented before closing.

Write the decision in a way that a property manager, roof contractor, manufacturer representative, and consultant can all understand without standing on the roof. The best closeout sentence ties the decision to curb ID, roof area, condition observed, action taken, remaining limit, and the person responsible for the next step.

Attach the final decision to the photo set rather than sending it as a separate comment with no evidence link. A closeout sentence, table row, checklist status, and photo folder should all identify the same curb. That consistency is what makes the record useful months later when the roof is dry, the crew has moved on, and the owner asks why the warranty item was released.

If the final decision is monitoring, define the trigger. It may be the next rainfall over a stated amount, the next scheduled maintenance visit, a manufacturer revisit after repairs cure, or a time-bound observation period. Monitoring without a trigger is just a delayed closeout, and it gives the owner no clear point for the next decision.

Sources checked

• Elevate, UltraPly TPO Roofing Systems Application GuideUsed for TPO curb flashing, base tie-in, counterflashing, warranty boundary, roof drains, scuppers, traffic, and sheet-metal limitations.
• Elevate, UltraPly TPO Roofing Systems Design GuideUsed for positive drainage, ponding timing, designer responsibility, wall and curb flashing, and counterflashing context.
• WeatherBond, WeatherBond TPO Roofing System SpecificationUsed for drainage responsibility, 48-hour ponding references, crickets and saddles, curb corners, wall and curb flashing, and metal counterflashing.
• Carlisle SynTec, Care and Maintenance GuideUsed for leak notice, owner maintenance records, rooftop unit inspections, debris removal, ponding timing, and temporary leak response.
• ARMA, Effects of Ponding Water on Low-Slope Roof SystemsUsed for ponding definition, consequences, drainage maintenance, crickets upslope of rooftop equipment, and reducing persistent water.
• Metal Construction Association, Selection and Installation of Curbs on Hydrostatic Low-Slope Coated Steel and Aluminum RoofingUsed for roof curb purpose, curbs as drainage obstructions, crickets, diverters, saddles, shingled curb configuration, side clearances, and warranty coordination.
• LM Curbs, Universal Standing Seam Roof Curb Installation InstructionsUsed for standing-seam curb layout, upslope and downslope relationships, sealants, fasteners, cap strips, and roof-opening safety context.
• Johns Manville, Commercial Roofing Owner's ManualUsed for roof maintenance records, rooftop unit and penetration inspection, leak reporting, modification review, and guarantee exclusions.
• Johns Manville, JM TPO Curb FlashingUsed for curb flashing product context, curbs and parapet walls, and encapsulated-edge curb flashing.
• Johns Manville, JM TPO Curb Flashing Data SheetUsed for approved use on curbs and parapet walls, reinforced TPO curb flashing, and application cautions.
• Sika Sarnafil, Typical Roofing DetailsUsed for detail categories covering curb flashing, roof hatch flashing, equipment pad curbs, wall counterflashing, drains, and slope transitions.
• Carlisle SynTec, U-5A Curb Flashing TPOUsed for manufacturer detail context for TPO curb flashing systems.
• Versico, TPC-5.1 TPO Curb FlashingUsed for manufacturer detail context for TPO curb flashing.
• Versico, VersiWeld TPO Curb Wrap Corners Technical Data BulletinUsed for prefabricated TPO curb wrap corner context and curb flashing product evidence.

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