JHA / JSA / AHA builderMasonry Movement Joint Sealing 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.
Just need the example? Download it here.For the crew
You know the work. Let’s turn that experience into a plan your crew can talk through. Start with today’s job, then check the steps together.
Let’s build your JHA.
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.
Print your own JHA by signing in, or contribute the selected structured categories as a guest. Signing in does not require research participation. Written job details are processed to prepare your export and are stored on our server only if you save to your private company library.
Research purpose, data fields, retention and withdrawal · Privacy notice
Sign-in uses a free account. Your tab draft is retained for the return from sign-in.
Hosted organization saving requires active jSMS access and a company workspace. View jSMS plans.
The export uses landscape pages, task-only continuation pages and a Page X of Y footer in current Chrome or Edge. Review every page. Opening an export is not proof that the JHA was printed or used. The PDF includes its research choice and reference; the private withdrawal link stays in the export’s screen-only receipt.
Device storage and other draft options
Device copies may contain private job information. Clear them when using a shared device.
Your entries stay in this working draft as you move between steps. Required field checks, employer review and work authorization remain separate.
Your Masonry Movement Joint Sealing 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 joint and product system
Possible hazards: A sealed-over obstruction or incompatible product can prevent intended movement or lose adhesion.
Planned controls: Sealant lead confirms the designated joints, current geometry, substrate release and identified product system. Resolve mortar bridges, damage and unknown coatings with the responsible masonry or design lead; do not grind or reshape the joint under this analysis.
Check before work: Lead checks the joint schedule and product documentation before opening containers.
022. Prepare safe access and surfaces
Possible hazards: Loose debris, sharp edges or unsuitable cleaning chemicals can injure workers or contaminate the joint.
Planned controls: Separate the ground-level work bay and protect adjacent surfaces. Use the approved nonabrasive cleaning method with the required chemical controls and drying stage; keep the joint free of residue. Pause if preparation requires powered removal or a different material assessment.
Check before work: Lead verifies surface readiness and safe chemical handling before backing placement.
033. Install backing and bond separation
Possible hazards: Damaged backing or an incorrect depth can cause poor sealant shape or unwanted bonding.
Planned controls: Place the specified compatible backer or bond-break material at the released depth using suitable blunt tools. Preserve its condition and intended bond separation; check the continuous joint before sealing rather than hiding an uncertain backing arrangement.
Check before work: Lead checks backing identity, depth and condition against the current detail.
044. Apply primer where required
Possible hazards: Primer vapors, skin contact or premature sealing can expose workers and compromise adhesion.
Planned controls: Follow the actual primer and substrate requirements, SDS precautions and application window. Use assessed ventilation and contact protection, control ignition where applicable and keep containers closed. Omit or substitute primer only with the system’s technical approval.
Check before work: Applicator records product identity and the required preparation and timing conditions.
055. Place and tool the sealant
Possible hazards: Poor contact, overfilled geometry or unsuitable tooling can create a joint that fails in movement.
Planned controls: Apply and tool the specified sealant within its documented conditions and geometry, using the approved method to achieve the intended sidewall contact without defeating the backing arrangement. Use required contact protection; do not add an unapproved solvent or wetting agent.
Check before work: Lead checks actual application conditions and the agreed sample or inspection criteria.
066. Protect cure and record handover
Possible hazards: Early contact, weather or cleanup can damage fresh sealant and conceal unresolved defects.
Planned controls: Maintain the product’s cure and weather protection and isolate the fresh joints from nearby work. Collect containers and waste under the SDS and site arrangements. Record actual locations, product lots, conditions and required test or acceptance findings before handover.
Check before work: Receiving lead confirms cure restrictions and outstanding inspection or test actions.
Example scope and starting conditions
A sealant crew will finish released exterior masonry movement joints at ground level using the specified backing material, primer where required and elastomeric sealant. Joint openings are already formed and cleared by the masonry crew. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- Joint geometry, substrate condition, sealant compatibility and product application limits are established in the project detail and actual product instructions.
- The chemical review covers the selected primer, sealant and approved cleanup method with ventilation, washing and spill arrangements.
- This excludes mortar-bed tuckpointing, grinding, structural crack repair, pressure washing, elevated access and firestop joint systems.
Know when to pause
- Joint geometry, hidden obstruction or substrate differs from the released condition.
- The specified product, primer window or application conditions cannot be verified.
- Chemical protection, cure protection or the acceptance method changes.
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
What brings you here today? Choose what you’re working on, or tell Jenkins about your situation.
Jenkins matches your words to published starting points. Keep names and private job details in your working draft. Suitable free resources come first.
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
- What released geometry and backing detail permit the intended joint movement?
- Which sealant, primer and substrate compatibility evidence apply here?
- How will actual surface readiness, application conditions and cure protection be recorded?
Training and qualifications to confirm
- The actual movement-joint backing, primer, application and cure requirements, including verification hold points.
- Hazard communication, contact protection and spill-response limits for the identified primer, sealant and cleanup products.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Is this the same task as masonry tuckpointing?
No. Tuckpointing replaces mortar in masonry bed or head joints. This task preserves a designed movement space and installs a compatible flexible sealant system; mortar filling or grinding would change its purpose and scope.
What must the crew record for actual use?
Identify the actual equipment and work boundaries, responsible people, applicable criteria, inspection findings and open actions. Resolve changes with affected crews and obtain required project authorization before work.
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 →Hand Protection: Match the Glove to the Task →Chemical Spills: Know Your Response Limit →
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 joint and product system
Hazard: A sealed-over obstruction or incompatible product can prevent intended movement or lose adhesion.
Control: Sealant lead confirms the designated joints, current geometry, substrate release and identified product system. Resolve mortar bridges, damage and unknown coatings with the responsible masonry or design lead; do not grind or reshape the joint under this analysis.
Verification: Lead checks the joint schedule and product documentation before opening containers.
Why this belongs in the analysis: An open-looking slot does not establish the designed movement space.
2. Prepare safe access and surfaces
Hazard: Loose debris, sharp edges or unsuitable cleaning chemicals can injure workers or contaminate the joint.
Control: Separate the ground-level work bay and protect adjacent surfaces. Use the approved nonabrasive cleaning method with the required chemical controls and drying stage; keep the joint free of residue. Pause if preparation requires powered removal or a different material assessment.
Verification: Lead verifies surface readiness and safe chemical handling before backing placement.
Why this belongs in the analysis: Preparation must match both the sealant and the actual masonry substrate.
3. Install backing and bond separation
Hazard: Damaged backing or an incorrect depth can cause poor sealant shape or unwanted bonding.
Control: Place the specified compatible backer or bond-break material at the released depth using suitable blunt tools. Preserve its condition and intended bond separation; check the continuous joint before sealing rather than hiding an uncertain backing arrangement.
Verification: Lead checks backing identity, depth and condition against the current detail.
Why this belongs in the analysis: The concealed backing controls how the finished sealant can move.
4. Apply primer where required
Hazard: Primer vapors, skin contact or premature sealing can expose workers and compromise adhesion.
Control: Follow the actual primer and substrate requirements, SDS precautions and application window. Use assessed ventilation and contact protection, control ignition where applicable and keep containers closed. Omit or substitute primer only with the system’s technical approval.
Verification: Applicator records product identity and the required preparation and timing conditions.
Why this belongs in the analysis: Neither always prime nor never prime is a universal joint rule.
5. Place and tool the sealant
Hazard: Poor contact, overfilled geometry or unsuitable tooling can create a joint that fails in movement.
Control: Apply and tool the specified sealant within its documented conditions and geometry, using the approved method to achieve the intended sidewall contact without defeating the backing arrangement. Use required contact protection; do not add an unapproved solvent or wetting agent.
Verification: Lead checks actual application conditions and the agreed sample or inspection criteria.
Why this belongs in the analysis: A smooth surface alone does not demonstrate adhesion or movement capability.
6. Protect cure and record handover
Hazard: Early contact, weather or cleanup can damage fresh sealant and conceal unresolved defects.
Control: Maintain the product’s cure and weather protection and isolate the fresh joints from nearby work. Collect containers and waste under the SDS and site arrangements. Record actual locations, product lots, conditions and required test or acceptance findings before handover.
Verification: Receiving lead confirms cure restrictions and outstanding inspection or test actions.
Why this belongs in the analysis: The teaching example supplies no adhesion test or completed acceptance record.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| Work carefully and wear PPE. | Place the specified compatible backer or bond-break material at the released depth using suitable blunt tools. Preserve its condition and intended bond separation; check the continuous joint before sealing rather than hiding an uncertain backing arrangement. |
| Check that everything is ready. | Sealant lead confirms the designated joints, current geometry, substrate release and identified product system. Resolve mortar bridges, damage and unknown coatings with the responsible masonry or design lead; do not grind or reshape the joint under this analysis. |
Common questions
Can this example be used as a JSA?
Adapt its Task | Hazard | Control analysis to the employer’s format and actual conditions. The example is a teaching aid, not evidence that controls were checked.
What changes if the project requires an AHA?
Use the governing AHA format, risk method, supporting records and acceptance process. The published formwork AHA demonstrates that additional structure; changing a JHA title does not supply it.
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
- BIA Technical Note 18A: Accommodating expansion of brickwork
- Sika Sikaflex + Construction sealant product data and application guidance
- OSHA 1910.1200 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. Use actual equipment instructions and site requirements alongside these references. Reference review: October 9, 2026.
Developed by Todd Jerome Jenkins, MS, CSP · Edition v1.0 · October 9, 2026
Use the builder’s Print / Save as PDF action after signing in or accepting research participation.