Firestop Inspection Checklist Scorer
Score firestop installations against IBC/UL inspection criteria and estimate remediation effort.
About this calculator
Inspection Score is a weighted checklist, not a simple pass count: Correct UL System (25 points) and Proper Fill Depth (20 points) together make up 45 of the possible 100 points, while Annular Space (15) and the four remaining items (Surface Finish, Labels, Documentation, Installer Certified, 10 points each) fill out the rest. Passing requires all three: Correct UL System present, Proper Fill Depth present, AND a total score of at least 70 -- so even a numerically high score can still fail the inspection if either of those two critical items is marked as deficient, since they gate the pass/fail result independently of the point total. Critical Deficiencies counts failures in just those same two gating items (System and Fill Depth), separate from Deficiencies Found, which tallies all seven possible failures.
Remediation Hours weights a critical deficiency (0.75 hr per penetration) three times as heavily as a non-critical one (0.25 hr per penetration), then multiplies that per-penetration rate by Total Penetrations -- so at the default all-items-pass configuration, there are zero deficiencies of either kind and Total Penetrations has no effect on Remediation Hours at all, since a rate of zero times any penetration count is still zero. Only once a real deficiency is present does Total Penetrations start driving the estimated labor and the $85/hr Estimated Remediation Cost that follows from it. Every input here is a pass/fail checklist item you mark from an on-site or documentation review; the calculator does not perform the inspection itself, only scores the results you enter.
Inputs
Results
Inspection score (0-100)
100
How to Use This Calculator
- Enter Correct UL system (0/1), Proper fill depth (0/1), and Annular space OK (0/1).
- Set Surface finish OK (0/1), Labels installed (0/1), and Documentation on file (0/1).
- Adjust Installer certified (0/1), Total penetrations as needed.
- Review the Inspection score (0-100) result.
- Use Passes inspection (0/1) and Deficiencies found to inform your decision.
What each input means
- Correct UL system (0/1)
- Installed system matches the listed UL system design.
- Proper fill depth (0/1)
- Sealant/fill material at correct depth per listing.
- Annular space OK (0/1)
- Gap between penetrant and opening is within listing limits.
- Surface finish OK (0/1)
- Smooth finish, no voids, cracks, or missing material.
- Labels installed (0/1)
- Firestop identification labels affixed at each location.
- Documentation on file (0/1)
- Inspection reports and UL system details documented.
- Installer certified (0/1)
- Installer holds current firestop certification (FM, UL, etc.).
- Total penetrations
- Number of penetrations being inspected.
What each result means
- Inspection score (0-100)
- Weighted quality score.
- Passes inspection (0/1)
- 1 = passes, 0 = fails (requires correct system, fill depth, score >= 70).
- Deficiencies found
- Total number of failed criteria.
- Critical deficiencies
- System mismatch or fill depth issues.
- Remediation hours
- Estimated labor hours to fix all deficiencies.
- Remediation cost ($)
- Estimated cost at $85/hr labor rate.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersCorrect UL system (0/1) = 1, Proper fill depth (0/1) = 1, Annular space OK (0/1) = 1, Surface finish OK (0/1) = 1 = 8 input(s) provided
- Calculate Inspection score100 = 100
- Calculate Passes inspectionPasses inspection1 = 1
- Calculate Deficiencies foundDeficiencies found0 = 0
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Can an installation with a high Inspection Score still fail?
Yes — Passes Inspection requires Correct UL System AND Proper Fill Depth to both be marked present, in addition to a total score of at least 70. Those two items act as a hard gate independent of the point total, so a high-scoring installation missing either one still fails, even if every other checklist item is marked complete.
What's the difference between Critical Deficiencies and Deficiencies Found?
Critical Deficiencies only counts failures in Correct UL System and Proper Fill Depth — the two items that gate the pass/fail result. Deficiencies Found tallies failures across all seven checklist items, including the five lower-weighted ones (Annular Space, Surface Finish, Labels, Documentation, Installer Certified) that affect the score but don't independently fail the inspection.
Why does Total Penetrations sometimes not change the Remediation Hours estimate?
Because Remediation Hours is calculated as a per-penetration rate, driven by Critical Deficiencies (0.75 hr each) and other deficiencies (0.25 hr each), multiplied by Total Penetrations. If every checklist item passes at the default settings, that per-penetration rate is zero, so Total Penetrations has nothing to multiply and Remediation Hours stays at zero regardless of how many penetrations you enter.
Which two checklist items carry the most weight in the Inspection Score?
Correct UL System (25 of 100 points) and Proper Fill Depth (20 of 100 points) together account for 45% of the total possible score — more than double the next-highest item, Annular Space Within Spec, at 15 points. The remaining four items (Surface Finish, Labels, Documentation, Installer Certified) are worth 10 points each.
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