JHA / JSA / AHA builderSelf-Adhered Masonry Through-Wall Flashing JHA
A JHA breaks the work into steps, hazards and controls. Use this example to build a draft for your actual job and review it with your crew.
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Step 1 of 4 · Working draft
Your job
Tell Jenkins what you’re planning and where the work will happen. Use the actual job details.
Use the published example’s suggestions when they fit your task, or write your own steps. These are planned controls, not verified worksite conditions.
Describe an observable step, how someone could be harmed, and the control that acts on that hazard. Identify who checks it and what evidence is needed.
Walk through the plan with the people doing the work. Resolve missing controls and agree who checks them. Moving to the next step does not approve the work.
Confirm people, equipment and emergency arrangements
Record changes, checks, and open actions
Walk the work area, review with the crew, and resolve missing controls. Follow the required approval process. This tool does not judge completeness, verify signatures or authorize work.
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Your Self-Adhered Masonry Through-Wall Flashing JHA
Walk through the job in order. Use these possible hazards, planned controls and checks to start a conversation about your actual work.
011. Release the complete drainage assembly
Possible hazards: A membrane installed without a supported outlet or return detail can retain water or leak into the building.
Planned controls: Flashing lead matches the current facade detail to the actual backing, cavity, ledge and exterior drainage route. Identify membrane, drip, termination, corners/end dams and compatible sealant/primer as one assembly. Resolve interface conflicts before work. Do not treat a product roll or generic flashing sketch as a complete project water-management detail.
Check before work: Lead records the matched complete run and resolved support/outlet interfaces.
022. Prepare safe access and compatible components
Possible hazards: Sharp metal, rolled membrane or chemical contact can injure the crew and contaminate the bonding face.
Planned controls: Use the released ground-level access and stable preparation bench. Identify prepared metal corners, end dams, drip and termination parts with assessed hand/eye protection and safe edges. Review actual primer and sealant SDS, arranging ventilation, washing and containment. Stage controlled lengths and waste receiver; keep helpers outside cut/recoil paths.
Check before work: Lead checks component identity, safe preparation positions and chemical protection readiness.
033. Inspect substrate and prepare permitted primer
Possible hazards: Contamination, moisture or an unsupported gap can prevent adhesion or allow flashing to sag into the cavity.
Planned controls: Check the independently released backing and cavity support under the current manufacturer instructions. Hold projections, contamination, wet surfaces or unsuitable support for correction by the responsible lead. Perform the permitted cleaning and selected primer procedure, verifying actual readiness before covering. Obtain clarification if primer requirements differ between product documents; no crew-selected solvent or unsupported membrane bridge is accepted.
Check before work: Installer records substrate/support findings and any required primer readiness.
044. Fit drip corners and end dams
Possible hazards: Missing returns or misaligned sharp components can leave concealed leak paths and cut workers during placement.
Planned controls: Fit the identified drip, prepared corners and end dams under the issued geometry and compatible sealant method. Maintain supported drainable alignment and safe hand positions. Use only released attachment locations and the prescribed overlap/connection arrangement. Inspect returns before sheets hide them; do not flatten a required end dam, force a sharp part through the membrane or omit a component for easier fit.
Check before work: Named checker records component positions, connections and accepted return continuity.
055. Adhere roll and complete the field interfaces
Possible hazards: Air pockets, open laps or an unsecured upper edge can permit leakage or tearing before masonry conceals the run.
Planned controls: Control release-liner removal and support each manageable field section while placing it by actual instructions. Roll to the required contact condition, maintaining the project’s supported slope and outlet. Complete prescribed laps, sealant and upper termination, including the required bar for the selected surface-attached upstand. Hold poor adhesion or wrinkles for an accepted correction; do not substitute face caulk for an incomplete concealed lap.
Check before work: Checker records adhesion, lap, sealant and termination findings before concealed-work release.
066. Protect and hand over the concealed-work record
Possible hazards: Later ties, mortar or weather can puncture, obstruct or overexpose accepted flashing before wall completion.
Planned controls: Complete the required review of the whole run and mark unresolved areas. Retain supported securement and manufacturer-defined exposure protection while waiting for masonry; coordinate the permitted next-stage access and tie interfaces. Collect release film, sharp scraps and contained chemical residue. Transfer actual continuity/adhesion findings, protection checks and remaining holds; masonry starts only through the designated concealed-work acceptance process.
Check before work: Receiving lead confirms flashing status, protected outlets and restrictions.
Example scope and starting conditions
A flashing crew will construct one specified ground-level veneer-base drainage run before brickwork conceals it. The detail uses Hohmann & Barnard Textroflash, compatible drip/termination parts, sealant and prepared corners/end dams. Released backing and support allow safe cutting, fitting, rolling and concealed-work inspection. No units or veneer-support anchors are installed. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- The US facade detail identifies the complete moisture path, backing interface, cavity support, outlet, corners/returns, membrane and compatible accessories. Backing and prepared attachments are released before installation.
- Current manufacturer instructions and actual primer/sealant SDS govern substrate condition, optional or required primer, weather, adhesion, laps and termination. Resolve product changes or conflicting instructions technically.
- Bricklaying coverage is partial: concealed drainage-flashing construction only. Veneer laying, structural anchors, roof flashing, ordinary movement-joint sealing, unsupported cavity bridging, torch work and new substrate drilling are excluded.
Know when to pause
- The full drainage/outlet detail, compatible components, released backing/support or actual instructions/SDS are missing.
- Backing is wet or contaminated, a corner/lap fails, adhesion is poor or the membrane loses its supported geometry.
- A termination or end dam would be omitted, later work damages/blocks the assembly or concealment precedes required review.
After a pause, correct the condition, reassess the work, and obtain required authorization before restarting.
Free example and template
No account required. The worked example contains planned controls. The blank template is for your own work; neither includes fabricated inspection results, signatures or approval.
Worked exampleNeed help? Ask Jenkins
Jenkins · Your Safety Concierge
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For managers
Does the team have what it needs to carry out the plan? Give the crew time, equipment and support, and make it clear who will resolve anything that is missing.
Manager checks and supporting resources
Confirm the people doing the work have the time, equipment, information and support to carry out the plan. Agree who checks the controls and who resolves open actions.
Questions to resolve before work
- How does this complete flashing run direct water to the accepted exterior outlet?
- Which corners, end dams, laps and terminations must be inspected before the next course conceals them?
- What protects the membrane from damage and excessive exposure until masonry installation resumes?
Training and qualifications to confirm
- Selected masonry-flashing system instruction covering compatible membrane/accessories, supported geometry, primer/adhesion, corner/end-dam continuity and concealed-work checks.
- Sharp-sheet and knife handling, assessed primer/sealant contact controls, controlled roll placement and protected flashing handover.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Why is this separate from the brick-veneer example?
The veneer example lays supported courses, installs ties and preserves specified flashing/weeps in a cavity-maintenance row. This operation creates and inspects the concealed drainage assembly itself, including surface readiness, supported membrane placement, corner/end-dam connections, adhesion and termination. It does not repeat veneer laying or claim the entire bricklaying activity.
What must the crew record for actual use?
Record the actual work boundary, governing documents, responsible people, acceptance criteria, control findings and unresolved actions. Communicate restrictions and obtain required project authorization; this fictional example records no completed inspection or installed-control acceptance.
Keep planning connected
Resources that support this JHA
Additional tools for task planning and safe work. Start with the free resources; explore paid options only when they meet an additional need.
Toolbox talks for the work
Prepare a practical crew discussion.
Hand Protection: Match the Glove to the Task →Hazard Communication: Labels, SDS & the Task →Housekeeping Is a Control →
Safety program resources
Review procedures, roles, and requirements.
Browse the existing catalog and confirm the scope and purchase availability of each program.
Browse safety programs →
Paid service · Availability
Task-specific training and qualifications
Explore applicable training and qualification needs.
Task-specific training services are not currently available to book here. Start with the free training-needs lookup; a toolbox talk or online course alone does not establish competence or employer authorization.
Review training needs · Free →People, equipment, emergency arrangements and open actions are recorded in the guided JHA’s Crew review step.
Open the crew review step →For safety professionals
How do we know the planning process and controls are working? Connect what the crew reports with field checks, risk decisions and the evidence behind your system.
Industry context, SIF, control verification and AHA review
Guidance and evidence
Review the method, risk decisions and evidence behind the plan. Use the actual jurisdiction, equipment instructions, employer process and project requirements.
Task-by-task control and verification rationale
1. Release the complete drainage assembly
Hazard: A membrane installed without a supported outlet or return detail can retain water or leak into the building.
Control: Flashing lead matches the current facade detail to the actual backing, cavity, ledge and exterior drainage route. Identify membrane, drip, termination, corners/end dams and compatible sealant/primer as one assembly. Resolve interface conflicts before work. Do not treat a product roll or generic flashing sketch as a complete project water-management detail.
Verification: Lead records the matched complete run and resolved support/outlet interfaces.
Why this belongs in the analysis: Water follows the assembled geometry rather than the product’s name.
2. Prepare safe access and compatible components
Hazard: Sharp metal, rolled membrane or chemical contact can injure the crew and contaminate the bonding face.
Control: Use the released ground-level access and stable preparation bench. Identify prepared metal corners, end dams, drip and termination parts with assessed hand/eye protection and safe edges. Review actual primer and sealant SDS, arranging ventilation, washing and containment. Stage controlled lengths and waste receiver; keep helpers outside cut/recoil paths.
Verification: Lead checks component identity, safe preparation positions and chemical protection readiness.
Why this belongs in the analysis: Fabrication and chemical controls are needed before adhesion begins.
3. Inspect substrate and prepare permitted primer
Hazard: Contamination, moisture or an unsupported gap can prevent adhesion or allow flashing to sag into the cavity.
Control: Check the independently released backing and cavity support under the current manufacturer instructions. Hold projections, contamination, wet surfaces or unsuitable support for correction by the responsible lead. Perform the permitted cleaning and selected primer procedure, verifying actual readiness before covering. Obtain clarification if primer requirements differ between product documents; no crew-selected solvent or unsupported membrane bridge is accepted.
Verification: Installer records substrate/support findings and any required primer readiness.
Why this belongs in the analysis: A sticky membrane cannot correct an unaccepted backing or drainage support.
4. Fit drip corners and end dams
Hazard: Missing returns or misaligned sharp components can leave concealed leak paths and cut workers during placement.
Control: Fit the identified drip, prepared corners and end dams under the issued geometry and compatible sealant method. Maintain supported drainable alignment and safe hand positions. Use only released attachment locations and the prescribed overlap/connection arrangement. Inspect returns before sheets hide them; do not flatten a required end dam, force a sharp part through the membrane or omit a component for easier fit.
Verification: Named checker records component positions, connections and accepted return continuity.
Why this belongs in the analysis: The ends and corners must remain part of the continuous drainage assembly.
5. Adhere roll and complete the field interfaces
Hazard: Air pockets, open laps or an unsecured upper edge can permit leakage or tearing before masonry conceals the run.
Control: Control release-liner removal and support each manageable field section while placing it by actual instructions. Roll to the required contact condition, maintaining the project’s supported slope and outlet. Complete prescribed laps, sealant and upper termination, including the required bar for the selected surface-attached upstand. Hold poor adhesion or wrinkles for an accepted correction; do not substitute face caulk for an incomplete concealed lap.
Verification: Checker records adhesion, lap, sealant and termination findings before concealed-work release.
Why this belongs in the analysis: Visible sheets cannot prove hidden interface continuity.
6. Protect and hand over the concealed-work record
Hazard: Later ties, mortar or weather can puncture, obstruct or overexpose accepted flashing before wall completion.
Control: Complete the required review of the whole run and mark unresolved areas. Retain supported securement and manufacturer-defined exposure protection while waiting for masonry; coordinate the permitted next-stage access and tie interfaces. Collect release film, sharp scraps and contained chemical residue. Transfer actual continuity/adhesion findings, protection checks and remaining holds; masonry starts only through the designated concealed-work acceptance process.
Verification: Receiving lead confirms flashing status, protected outlets and restrictions.
Why this belongs in the analysis: Flashing acceptance must survive the transition into concealed masonry work.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| Stick the roll down and let the bricks hold it. | Build the accepted supported run with compatible drip, returns, laps and termination, then record concealed-work findings. |
| Seal the visible edge; hidden gaps will not matter. | Inspect the complete corners, end dams and field interfaces before concealment and maintain their protection until handover. |
Common questions
Can this example be used as a JSA?
Adapt the Task | Hazard | Control sequence to the employer’s JSA and actual worksite. Name control checkers and record findings; this fictional example supplies no completed inspection or authorization.
What changes if the project requires an AHA?
Use the governing AHA format, risk method, records and acceptance process. The published formwork AHA illustrates that structure. Add actual competencies, inspections and reviews; renaming a JHA does not complete them.
Are these resources part of a paid course?
This walkthrough, browser draft builder and downloads are free public resources, separate from Academy course enrollment.
References and source note
- Hohmann & Barnard Textroflash: selected-system requirements
- Hohmann & Barnard actual Textroflash installation instructions
- Hohmann & Barnard Textroflash installation resource
Original instructional scenario with planned controls. Primary references support hazard planning. Use actual equipment and product instructions, project design and employer requirements to establish field criteria. This example supplies no inspection findings or work authorization. Use actual equipment instructions and site requirements alongside these references. Reference review: October 13, 2026.
Developed by Todd Jerome Jenkins, MS, CSP · Edition v1.0 · October 13, 2026
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