When a Concrete Review Lists Two Possible Causes, Ask for a Decision Fork
A useful assessment can identify more than one plausible explanation without pretending the uncertainty has disappeared. The next question is what evidence would distinguish those explanations and how that difference would affect the work. This is more actionable than choosing whichever cause sounds least expensive.
Separate an observation from an explanation
Write the visible or measured condition first, then the proposed explanations. A crack, moisture mark or surface change is an observation; its cause may still require judgment or additional information. NRMCA’s cracking guidance describes several mechanisms, so a familiar-looking pattern should not be treated as a complete site diagnosis. Preserve the reviewer’s level of confidence rather than upgrading possible to confirmed.
Ask what changes the decision
For each explanation, identify the next useful evidence and the decision it would influence. Ask whether the same initial step is appropriate in both cases or whether a different repair approach would follow. A request for more information is strongest when it has a purpose. It should not become an open-ended collection exercise with no explanation of how the result would be used.
Set a stopping point for the present scope
Agree what can reasonably be concluded now, what remains outside the agreed work, and who would review any additional evidence. If an explanation requires another discipline, keep that handoff explicit. The owner can then compare a limited action, further assessment or deferral on a common basis. None of those choices should be presented as resolving an explanation that has not actually been established.
Copyable worksheet
Use one row for each field. Mark unknown information clearly and retain the original records.
| Field | Your note |
|---|---|
| Observed condition | ____________________ |
| Possible explanation A | ____________________ |
| Possible explanation B | ____________________ |
| Evidence that distinguishes them | ____________________ |
| Decision and responsible reviewer | ____________________ |
Worked example
Illustrative example: a fictional owner receives two possible explanations for a recurring floor mark. Instead of ordering a finish immediately, the owner asks what would separate the explanations. The reviewer identifies a focused next question and records what the current review cannot settle.