Practice Test Geeks(CFI) Certified Flooring Installer Practice Test
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Moisture Mitigation Systems Flashcards

7 cards from real CFI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Moisture Mitigation Systems flashcards as text

  1. When using ASTM F2170 in-situ probes, where in the slab depth should the hole be drilled for slabs drying from one side only?

    Answer: 40% of slab depth

    For slabs drying from one side only (typical in-service condition), ASTM F2170 requires the probe hole to be drilled to 40% of the slab depth.

  2. A flooring contractor finds a MVER of 12 lbs/1,000 sq ft/24 hrs. Which is the most appropriate next step?

    Answer: Install a moisture mitigation system rated for the measured MVER

    A MVER of 12 lbs exceeds the typical 3–5 lb threshold for most adhesives, requiring an approved moisture mitigation system rated to handle the actual measured level.

  3. What is the function of sand broadcast into a wet moisture mitigation coating?

    Answer: To create a mechanical bond profile for the flooring adhesive or underlayment

    Broadcasting sand into the wet coating creates a textured surface profile that allows flooring adhesives or self-leveling underlayment to mechanically bond to the mitigation layer.

  4. Which type of flooring is MOST sensitive to moisture vapor and most likely to require mitigation even at moderate RH levels?

    Answer: Solid hardwood flooring

    Solid hardwood flooring is highly hygroscopic and will cup, warp, or buckle with exposure to elevated moisture vapor, making it extremely sensitive to subfloor moisture conditions.

  5. How long must an ASTM F1869 calcium chloride test kit typically remain sealed on the concrete before reading?

    Answer: 60–72 hours

    ASTM F1869 requires the calcium chloride dish to remain sealed under the dome for 60–72 hours before weighing to determine moisture vapor emission rate.

  6. What minimum number of calcium chloride tests does ASTM F1869 require for the first 1,000 sq ft of floor area?

    Answer: 3 tests

    ASTM F1869 requires a minimum of 3 tests for the first 1,000 sq ft, then 1 additional test for each additional 1,000 sq ft.

  7. What is the typical minimum curing time for a two-component epoxy moisture mitigation system before flooring installation can proceed?

    Answer: 12–24 hours

    Most two-component epoxy moisture mitigation systems require 12–24 hours of curing time at standard conditions before flooring can be installed over them.