Treating cracks before a traffic coating: assess, detail and record each location
A condominium parkade has several cracks across the proposed coating zone. One worker suggests filling every line with the same material. Another calls the widest crack structural from its appearance. The foreman needs an assessed treatment plan before the visible evidence disappears under the coating.
Record the lines and obtain the required assessment before assigning treatment. The cited application instructions distinguish crack details and expansion joints, and call for engineering attention where substrate concerns arise. That does not make a visual width measurement a structural diagnosis. The coating crew needs approved, located decisions for this deck rather than one repair recipe for every line.
Turn visible cracks into a treatment register
- Map before covering. Give each observed line or group a location reference tied to the level plan. Take context and detail photographs and record the observation date. Describe what is visible without declaring its cause, movement or structural significance from a picture.
- Separate known joints from unresolved lines. Compare the current drawings and details with site observations. Identify designed movement joints and interfaces, keeping uncertain lines for review. Do not coat across an expansion joint because it resembles a narrow crack on the floor.
- Refer the assessment to the right people. Bring the located evidence and available history to the responsible designer, substrate assessor and coating technical contact as required. Ask which conditions need further investigation or a hold. Keep the investigator’s conclusion separate from the foreman’s initial description.
- Attach the approved treatment. For each item, record the detail reference, specified compatible materials, responsible trade and review stage. Resolve interfaces between concrete repair, joint work and coating. A generic table from another system does not authorize routing or filling this slab.
- Retain completion evidence. Have the assigned trade record the located treatment and required preparation, cure or review evidence. Preserve the original observations and changes to the instruction. Do not mark an item closed merely because the line is no longer visible.
- Release the actual boundary. Confirm the required assessment and treatment reviews before coating proceeds in that zone. Give the crew current drawings showing exceptions. If a new line or changed condition appears, add it to the register and obtain the appropriate decision rather than applying yesterday’s detail automatically.
Checklist
Before cracks disappear beneath the coating
- Located observations and original photographs.
- Current joint and slab references.
- Required assessor and technical decisions.
- Approved treatment for each item.
- Linked completion and review evidence.
- Released area with unresolved holds visible.
Check your understanding
Two cracks have similar widths. Does that justify applying the same treatment to both?
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