JHA / JSA / AHA builderTwo-Component Roof Insulation Adhesive Dispensing 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 Two-Component Roof Insulation Adhesive Dispensing JHA
Walk through the job in order. Use these possible hazards, planned controls and checks to start a conversation about your actual work.
011. Confirm the approved attachment and chemical basis
Possible hazards: An unapproved board, substrate or chemical package can produce inadequate attachment while exposing the crew to chemicals under an unsuitable handling plan.
Planned controls: Lead matches board and substrate to system approval and verifies the regular canister pair and instructions. Identify attachment, placement, cure and quality responsibilities. Review both SDS through the employer’s exposure assessment, including ventilation and respirator decisions. Hold unresolved compatibility or chemical controls.
Check before work: Lead verifies approval, exact package identity and usable exposure and quality criteria.
022. Prepare protected roof access and chemical staging
Possible hazards: Canister movement, tripping hoses, unprotected openings or drifting spray can expose workers and adjacent occupants before any board is attached.
Planned controls: Maintain roof-edge, opening and access protection. Stage upright canisters within approved loading and route hoses away from walkways. Control ignition sources and protect affected surfaces and intakes. Provide assessed gloves, skin coverage, sealed eye protection and emergency arrangements; odor does not verify acceptable exposure.
Check before work: Lead verifies stable staging, exposure controls, protected routes and emergency access.
033. Assemble the matched dispensing system
Possible hazards: Crossed connections, damaged hoses or uncontrolled discharge can release chemical under pressure, contaminate components and expose the applicator.
Planned controls: Applicator follows the actual connection and readiness sequence with compatible new hoses, applicator and prescribed tips. Check product identity before opening required valves. Direct discharge into the contained test receptacle, protecting others from splash. Stop damaged or uncertain connections; never carry canisters by hoses or improvise fittings.
Check before work: Applicator verifies matched equipment, correct connections and prescribed product readiness.
044. Verify flow and trial reaction before application
Possible hazards: Uneven component flow or poor reaction can create uncured adhesive, failed attachment and pressure to correct the mixture by an unsupported adjustment.
Planned controls: Perform the contained manufacturer flow check and trial on approved scrap substrate. Checker evaluates prescribed reaction and curing indicators against instructions and conditions before production release. Hold abnormalities for technical disposition. Do not alter ratios, add material or place boards merely because foam appears.
Check before work: Quality checker records actual trial observations and the production decision.
055. Dispense the approved pattern and place boards
Possible hazards: Poor bead placement, delayed board seating or changing conditions can leave ineffective bonding; exposed adhesive and hoses can also cause contact and slips.
Planned controls: Follow the system bead layout while coordinating board placement and specified seating from protected positions. Maintain actual product and placement conditions. Monitor reaction, wind and access and retain unfinished-area protection until attachment criteria are met. Use the prescribed tip and equipment pause method for interruptions.
Check before work: Lead verifies actual pattern, coordinated seating and ongoing reaction and protection.
066. Shut down and transfer cure and waste responsibilities
Possible hazards: A pressurized applicator, mishandled waste or prematurely released boards can injure the next worker or leave the roof vulnerable to movement.
Planned controls: Follow exact shutdown and partial-canister storage instructions, securing trigger, valves and containment. Assigned personnel manage contaminated materials and containers under SDS, instructions and local requirements; no improvised puncturing or venting. Record installed areas, quality observations and remaining cure/protection requirements and hand them to the next lead.
Check before work: Lead verifies safe equipment state, waste controls and actual cure/protection handoff.
Example scope and starting conditions
A roofing crew will use a matched regular OlyBond500 Part 1 and Part 2 pressurized canister set to attach approved insulation boards in one released low-slope roof area. The paired hose, applicator and mixing-tip arrangement must match the current canister instructions; other packaging routes are excluded. This fictional learning example describes planned controls and records no actual inspection or authorization.
- The actual roof-system approval identifies compatible substrate, board, adhesive and attachment pattern. Current product instructions and both canister SDS apply; approved temperature, reaction, placement and cure criteria must be available without improvised ratios or timing.
- Roof bearing, protected access, edge and opening controls, board staging and drainage are accepted before dispensing. Canisters and hoses remain stable, upright and separated from traffic and incompatible operations; sensitive air intakes are addressed.
- Adhesive and solvent use 238160-20 and insulation/cover-board installation 238160-19 are partial connections. This cycle excludes mechanical fastening, fleece-membrane spatter application, pump systems, cartridge methods, canister refilling and pressure-vessel modification.
Know when to pause
- Product identity, equipment, approved substrate/board combination or attachment criteria differ from the accepted setup.
- Trial flow, reaction or cure evidence is abnormal, or conditions no longer meet the actual application instructions.
- Exposure controls, protected access, hose containment or safe pause method is lost, or a worker reports irritation or breathing symptoms.
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.
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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
- Who verifies the approved board/substrate combination, attachment pattern and actual product-readiness criteria?
- Which exposure assessment, ventilation, eye/skin protection and emergency arrangements apply to both chemical components?
- Who checks trial reaction, board placement and cure before the area is released to the next roofing operation?
Training and qualifications to confirm
- Instruction on the exact OlyBond500 canister pair, compatible dispensing equipment, product readiness, trial reaction and safe pause, restart and shutdown requirements.
- Hazard-communication instruction using both current SDS, including sensitization, pressure and ignition hazards, exposure controls, spill-response limits and prompt reporting of symptoms or contamination.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Can the crew compensate for a weak reaction by changing the component ratio?
No improvised ratio or dilution is part of this accepted canister cycle. Hold production and protect the chemical system while responsible personnel investigate identity, readiness, equipment and flow under the manufacturer’s instructions. Refer an unresolved issue to the technical authority. The trial and actual field conditions govern release; this example supplies no universal temperature, waiting time or corrective mixture.
What must the crew record for actual use?
Record the approved roof assembly, board and substrate, adhesive pair and lots, SDS and instruction revisions, equipment and readiness checks. Identify exposure controls, roof protection, trial results, attachment pattern, installed area, interruptions and technical dispositions. Transfer actual cure, wind-protection, storage and disposal responsibilities with unresolved work clearly held; do not enter invented acceptance results.
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.
Hazard Communication: Labels, SDS & the Task →Respiratory Hazards: Know What You’re Breathing →Low-Slope Roofs: Check the Work Zone and Its Limits →
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. Confirm the approved attachment and chemical basis
Hazard: An unapproved board, substrate or chemical package can produce inadequate attachment while exposing the crew to chemicals under an unsuitable handling plan.
Control: Lead matches board and substrate to system approval and verifies the regular canister pair and instructions. Identify attachment, placement, cure and quality responsibilities. Review both SDS through the employer’s exposure assessment, including ventilation and respirator decisions. Hold unresolved compatibility or chemical controls.
Verification: Lead verifies approval, exact package identity and usable exposure and quality criteria.
Why this belongs in the analysis: Chemical and roof-system readiness must both be established before dispensing.
2. Prepare protected roof access and chemical staging
Hazard: Canister movement, tripping hoses, unprotected openings or drifting spray can expose workers and adjacent occupants before any board is attached.
Control: Maintain roof-edge, opening and access protection. Stage upright canisters within approved loading and route hoses away from walkways. Control ignition sources and protect affected surfaces and intakes. Provide assessed gloves, skin coverage, sealed eye protection and emergency arrangements; odor does not verify acceptable exposure.
Verification: Lead verifies stable staging, exposure controls, protected routes and emergency access.
Why this belongs in the analysis: The whole application area needs protection, including people outside the crew.
3. Assemble the matched dispensing system
Hazard: Crossed connections, damaged hoses or uncontrolled discharge can release chemical under pressure, contaminate components and expose the applicator.
Control: Applicator follows the actual connection and readiness sequence with compatible new hoses, applicator and prescribed tips. Check product identity before opening required valves. Direct discharge into the contained test receptacle, protecting others from splash. Stop damaged or uncertain connections; never carry canisters by hoses or improvise fittings.
Verification: Applicator verifies matched equipment, correct connections and prescribed product readiness.
Why this belongs in the analysis: The paired equipment is part of the controlled chemical-delivery system.
4. Verify flow and trial reaction before application
Hazard: Uneven component flow or poor reaction can create uncured adhesive, failed attachment and pressure to correct the mixture by an unsupported adjustment.
Control: Perform the contained manufacturer flow check and trial on approved scrap substrate. Checker evaluates prescribed reaction and curing indicators against instructions and conditions before production release. Hold abnormalities for technical disposition. Do not alter ratios, add material or place boards merely because foam appears.
Verification: Quality checker records actual trial observations and the production decision.
Why this belongs in the analysis: A reacting trial gives evidence beyond the appearance of a bead.
5. Dispense the approved pattern and place boards
Hazard: Poor bead placement, delayed board seating or changing conditions can leave ineffective bonding; exposed adhesive and hoses can also cause contact and slips.
Control: Follow the system bead layout while coordinating board placement and specified seating from protected positions. Maintain actual product and placement conditions. Monitor reaction, wind and access and retain unfinished-area protection until attachment criteria are met. Use the prescribed tip and equipment pause method for interruptions.
Verification: Lead verifies actual pattern, coordinated seating and ongoing reaction and protection.
Why this belongs in the analysis: Reliable attachment depends on the complete placement cycle, not dispensing alone.
6. Shut down and transfer cure and waste responsibilities
Hazard: A pressurized applicator, mishandled waste or prematurely released boards can injure the next worker or leave the roof vulnerable to movement.
Control: Follow exact shutdown and partial-canister storage instructions, securing trigger, valves and containment. Assigned personnel manage contaminated materials and containers under SDS, instructions and local requirements; no improvised puncturing or venting. Record installed areas, quality observations and remaining cure/protection requirements and hand them to the next lead.
Verification: Lead verifies safe equipment state, waste controls and actual cure/protection handoff.
Why this belongs in the analysis: Chemical closeout and attachment acceptance continue after the last bead.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| It has little odor, so respiratory exposure is fine. | Employer evaluates both SDS and actual exposure conditions and provides the resulting controls before the applicator opens the chemical system. |
| The bead expanded; put boards on it whenever convenient. | Checker verifies the prescribed trial reaction and crew follows actual placement and cure criteria with unresolved areas held from release. |
Common questions
Can this example be used as a JSA?
Adapt the Task | Hazard | Control analysis to the employer’s JSA and actual work. Confirm assigned checks and record real findings before use.
What changes if the project requires an AHA?
Use the governing project format, risk method and acceptance process. The published formwork AHA illustrates additional structure; this example supplies no project risk rating or acceptance.
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
- OMG Two Component Adhesive Canisters Operating Instructions, AH1041A-05072026
- OMG OlyBond500 Canisters Part 1 and Part 2 SDS, March 9, 2026
- OSHA 1926.59 Hazard Communication
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 12, 2026.
Developed by Todd Jerome Jenkins, MS, CSP · Edition v1.0 · October 13, 2026
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