Sources and references

1. ASTM F2170 summary (Floor Expert knowledge base, AHF Products) and ASTM F2170 standard page
   • Slab and air above at service temperature and humidity for 48 hours before measuring.
   • Hole depth of 40% of slab thickness for a slab drying from one (top) side.
   • 24 hours for moisture equilibrium in the hole before readings.
   • At least three tests for the first 1,000 sq ft and one more for each additional 1,000 sq ft; one near the center, others toward the perimeter.
   • ASTM F2170 §5.3: results indicate the slab’s moisture condition only at the time of the test and at the locations tested (standard page).

   floorexpert.com (source document) · store.astm.org (source document)

2. Gilson Company, “Moisture Emission Test Kits HM-674B & HM-674D” operating manual (Rev. 02/2019), written to ASTM F1869
   • Three kits for areas up to 1,000 sq ft, plus one for each additional 1,000 sq ft.
   • Ambient 65–85°F and 40–60% RH for at least 48 hours prior to testing.
   • Surface free of residual adhesives, curing compounds, sealers, paints and coatings; at least 20 × 20 in cleaned area.
   • Test left undisturbed, out of direct sunlight, for 60–72 hours.
   • Result in lb per 1,000 sq ft per 24 hours.
   • Warning that residue from older resilient flooring, backing and asphaltic cutback adhesives may contain asbestos.

   globalgilson.com (source document)

3. ASTM F1869-23, Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride (scope)
   • Units: pounds of moisture over a 1,000 sq ft area during a 24-hour period (§1.4).
   • Not for gypsum concrete or floors containing lightweight aggregate (§1.2).
   • Not for emissions over coatings, through reactive penetrants, or over patching or leveling compounds (§1.3).

   store.astm.org (source document)

4. National Weather Service Las Vegas, “Precipitation Overview” (1991–2020 normals, NOAA NCEI)
   • Las Vegas annual precipitation normal of 4.18 inches (1991–2020).

   weather.gov (source document)

5. ASTM F3010-18, Standard Practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation Systems for Use Under Resilient Floor Coverings (scope)
   • Existence and scope of the practice; §1.3: it does not supersede the written instructions of the system, flooring, underlayment or adhesive manufacturers.

   store.astm.org (source document)

6. ASTM E1745-17, Standard Specification for Plastic Water Vapor Retarders Used in Contact with Soil or Granular Fill under Concrete Slabs (scope)
   • Covers flexible, preformed sheet vapor retarders under concrete slabs.

   store.astm.org (source document)

7. ACI 302.2R-06, Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials (American Concrete Institute)
   • Existence of ACI design guidance for slabs receiving moisture-sensitive flooring.

   concrete.org (source document)

8. Vegas Flooring Outlet approved publisher facts (packages/vfo-data/vfo-facts.json, verified against vegasflooringoutlet.com 2026-10-12)
   • 14+ years; licensed C-16/C-20 (license numbers); Best of Las Vegas 8 years; residential and commercial, all of Nevada.
   • SPC planks are 100% waterproof (owner-approved), always with the subfloor/edge/slab-moisture caveat.
   • Address 4039 Spring Mountain Rd, Las Vegas NV 89102; phone 702.685.8880.

   vegasflooringoutlet.com/

9. Vegas Flooring Outlet, Concrete Moisture Testing Las Vegas (service description; prose not copied)
   • VFO offers project-related, pre-installation concrete moisture testing and confirms method and scope during review.
   • VFO does not diagnose installed-floor failures or disputes.

   vegasflooringoutlet.com/concrete-moisture-testing-las-vegas

By Vegas Flooring Outlet · Updated October 12, 2026