- The Passing Score Question: What Is Actually Published
- Passing Means Two Things: Written Exam and Performance
- What the Written Exam Covers
- Format and Time Allocation
- The Performance Standard: Five Tests, No Coaching
- If You Don't Pass: Retake Rules and Deadlines
- Fees and What They Buy
- Passing Again: Recertification Requirements
- Aiming Your Prep at the Right Target
- Frequently Asked Questions
- ICRI has not publicly verified a numeric passing score or written question count for the CSMT exam.
- Certification requires passing the written exam and performing all five tests before a qualified judge without coaching.
- The written exam is scheduled for one hour; the performance appointment is a separate one-hour slot.
- A failed initial written exam must be retaken in full within one year, or the full course repeats.
The Passing Score Question: What Is Actually Published
Most candidates searching for a "passing score" expect a single number: 70 percent, 75 percent, or a scaled score on some fixed range. For the ICRI Concrete Slab Moisture Testing Technician-Grade 1 credential, that number is not something ICRI's public program materials establish. The program pages describe the examination structure, references, eligibility and fees, but a written question count and a numeric passing threshold were not verified in the public material reviewed for this article.
That matters, because many sites will happily hand you a made-up cutoff. We won't. If a source tells you "you need exactly 80 percent to pass the CSMT," ask where that figure comes from. Unless it appears in the participant packet you receive after registering, treat it as unverified.
For a broader look at how candidates fare overall, see our discussion in CSMT Pass Rate 2026: What the Data Shows, and for a realistic read on workload, How Hard Is the CSMT Exam? Complete Difficulty Guide 2026.
Passing Means Two Things: Written Exam and Performance
Here is the clearest statement of what "passing" means for this credential. According to ICRI's program description, certification requires:
- Passing the ICRI-administered written examination, and
- Successfully performing all five tests before a qualified judge without coaching.
Both components are required. There is no averaging of the two, and no way to compensate for a weak hands-on performance with a high written result. When people ask for "the passing score," the more useful question is "what is the passing standard?" and the answer is a combined one: a passing written result plus a clean, unassisted demonstration of every test.
| Component | What you must do | Published standard |
|---|---|---|
| Written examination | Pass the ICRI-administered exam | Numeric threshold and question count not publicly verified |
| Performance evaluation | Perform all five tests before a qualified judge | Must be done without coaching |
| Education session | Attend the 3-4-hour session | Not exam time, but exam content draws on it |
What the Written Exam Covers
ICRI lists five examination-reference and preparation topics, each tied to a specific ASTM standard. Importantly, the issuer presents these as unweighted headings, including their applicable annexes and appendices. They are not a percentage-weighted blueprint, and they are not described as an exhaustive list of everything that could appear. The examinations also cover the education session. Our full walkthrough is in CSMT Exam Domains 2026: Complete Guide to All 5 Content Areas; here is the short version tied to passing.
Domain 1: ASTM F710, Section 5.2 pH Testing
ASTM F710 covers preparing concrete floors to receive resilient flooring. The listed focus is Section 5.2, pH testing of the slab surface.
- Know why surface alkalinity matters to adhesives and flooring systems.
- Be able to describe and carry out the pH test procedure as the standard specifies.
- Use the edition supplied to you as a registered candidate. ICRI retains Section 5.2 exactly as it lists it, so do not substitute newer editions or rely on legacy lists.
Domain 2: ASTM F1869, Moisture Vapor Emission Rate with Anhydrous Calcium Chloride
This is the calcium chloride test for measuring moisture vapor emission rate (MVER) from a concrete subfloor.
- Understand the kit-based procedure, placement, exposure period and weighing logic.
- Know how conditions of the space affect a valid result.
- Be prepared to demonstrate the procedure, not just describe it.
Domain 3: ASTM F2170, In Situ Relative Humidity Probes
F2170 determines relative humidity in concrete slabs using probes installed in drilled holes.
- Know the drilling, sleeve or liner setup, equilibration and reading sequence.
- Understand how slab depth and conditioning interact with the measurement.
- Recognize what makes a reading defensible versus questionable.
Domain 4: ASTM F2659, Non-Destructive Electronic Moisture Meter
F2659 is a preliminary evaluation of comparative moisture condition using an electronic meter, applicable to concrete, gypsum cement and other slabs and screeds.
- Understand that this is a comparative, preliminary screening, not a substitute for the quantitative methods.
- Know the meter-use procedure and the limits of its readings.
Domain 5: ASTM F3191, Field Determination of Substrate Water Absorption (Porosity)
F3191 addresses substrate water absorption, or porosity, for substrates that will receive resilient flooring.
- Know what porosity tells you about how a substrate will accept adhesives and coatings.
- Be able to carry out the field determination procedure as the standard describes.
If you want a structured plan for working through these, our CSMT Study Guide 2026: How to Pass on Your First Attempt and the one-page CSMT Cheat Sheet 2026: One-Page Review of Must-Know Facts are the next stops.
Format and Time Allocation
ICRI's published schedule is specific about time even where it is silent on scoring. The written examination is allocated one hour, and the performance evaluation is a separate, assigned one-hour appointment. The 3-4-hour education session that precedes testing is instructional, not examination time.
Because the question count is not publicly verified, you cannot budget "X minutes per question" in advance. Instead, practice answering concept and procedure questions quickly and cleanly across all five standards so no single domain slows you down.
The Performance Standard: Five Tests, No Coaching
The performance portion is where the phrase "passing score" gets replaced by something closer to "pass or repeat." You must successfully perform all five tests before a qualified judge, without coaching. Those five tests map to the five standards above: pH testing, calcium chloride MVER, in situ relative humidity, the electronic moisture meter, and substrate water absorption.
- No coaching means no hints. The judge is evaluating whether you can run each test correctly on your own.
- All five means all five. Being excellent at four does not carry the fifth.
- Failed methods are repeated individually. If a performance method fails, you repeat that method rather than the entire hands-on component, within the one-year window described below.
Key Takeaway
Treat the performance evaluation as the real gate. Rehearse each of the five procedures start to finish, including setup, sequence, readings and recording, until you can do them without prompting. Paper knowledge alone will not satisfy a judge watching your hands.
If You Don't Pass: Retake Rules and Deadlines
ICRI's retake rules are more concrete than its scoring details, and they are worth knowing before exam day because they affect how much risk a first attempt carries.
| Situation | What happens | Deadline |
|---|---|---|
| Failed initial written exam | Must be retaken in full | Within one year, or the full certification course must be repeated |
| Failed one or more performance methods | Only the failed methods are repeated | Within one year, or the full certification course must be repeated |
| Failed first-recertification written exam | Separate re-examination | Six months before the full course is required |
The practical lesson: a first-attempt miss is recoverable, but the clock is real. If you fail, schedule your retake promptly and use the gap to drill the specific domain or procedure that tripped you up.
Fees and What They Buy
The published 2026 full-course fees include the education session and the demonstration/workshop alongside the examination path:
- USD 1,050 for ICRI members
- USD 1,350 for non-members
- USD 510 for verified student members
Eligibility is its own gate. You need ICRI-approved previous hands-on testing experience, or a prequalification waiver earned through participation in the Demonstration and Workshop. Details are in CSMT Requirements 2026: Eligibility, Prerequisites & How to Qualify, and the full cost picture, including recertification, is in CSMT Certification Cost 2026: Complete Pricing Breakdown.
Passing Again: Recertification Requirements
Certification lasts five years. The ICRI page's later-renewal heading references "10+ years after first recertification," which conflicts with its explicit five-year cycle; it does not establish ten-year validity, so plan around five years.
| Stage | Requirement | Fee (member / non-member) |
|---|---|---|
| First recertification | Written exam only | USD 495 / USD 595 |
| Second and later recertifications | Full certification course | USD 695 / USD 895 |
Notice what this implies for scoring: the first recertification tests you on the written exam alone, so there is no hands-on judge that round. Later cycles bring the full course back, meaning the performance standard returns. Keep your field skills sharp between cycles.
Aiming Your Prep at the Right Target
Since the passing threshold is not a number you can target, aim for mastery of the content and the procedures. One short, domain-sequenced plan works well for most candidates:
Quantitative Core: F1869 and F2170
- Learn MVER calcium chloride and in situ RH probe procedures first; they are the most procedure-heavy.
- Write out each step sequence from memory.
Screening and Surface Methods: F2659, F710 §5.2, F3191
- Cover the meter, pH and porosity procedures.
- Contrast what each method does and does not tell you.
Performance Rehearsal and Review
- Walk through all five tests without notes, as if a judge were watching.
- Use the exact editions supplied to registered candidates for final review.
When you want to check recall under realistic conditions, run through scenarios on our CSMT practice test site and revisit weak domains. You can also pace your overall effort against scheduling details in CSMT Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Finally, remember why the credential matters in the field: employers such as flooring contractors, concrete testing firms and construction consultancies value technicians who can produce defensible slab moisture data. For the career angle, see Is the CSMT Certification Worth It? Complete ROI Analysis 2026 and CSMT Jobs. For additional practice material, start at the main practice test site.
Frequently Asked Questions
A numeric passing threshold and written question count were not verified in ICRI's public program materials. What is established is the overall standard: pass the ICRI-administered written exam and successfully perform all five tests before a qualified judge without coaching.
ICRI's published schedule allocates one hour to the written examination, plus a separate assigned one-hour performance appointment. The 3-4-hour education session is instructional and is not counted as exam time.
A failed initial written exam must be retaken in full, while failed performance methods alone are repeated. Either must be completed within one year, or the full certification course must be repeated.
ASTM F710 (Section 5.2 pH testing), F1869 (calcium chloride MVER), F2170 (in situ relative humidity probes), F2659 (non-destructive electronic moisture meter) and F3191 (substrate water absorption). These are unweighted reference headings, not a percentage-weighted blueprint.
Certification lasts five years. First recertification is written-exam-only (USD 495 member, USD 595 non-member). Second and later recertifications require the full certification course (USD 695 member, USD 895 non-member).