Concrete Slab Moisture Testing

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ASTM F1869-11: MEASURING MOISTURE VAPOR EMISSION RATE (MVER) OF CONCRETE SUBFLOOR USING ANHYDROUS CALCIUM CHLORIDE

Significance of Use as listed per the referenced ASTM test:

  • This test method covers the quantitative determination of the rate of moisture vapor emitted from below-grade, on-grade, and above-grade (suspended) bare concrete floors.
  • Use this test method to obtain a quantitative value indicating the rate of moisture vapor emission from the surface of a concrete floor and whether or not that floor is acceptable to receive resilient floor covering. The moisture vapor emission rate only reflects the condition of the concrete floor at the time of the test. All concrete subfloors emit some amount of moisture in vapor form. Concrete moisture emission is a natural process driven by environmental conditions. All floor coverings are susceptible to failure from excessive moisture vapor emissions. The moisture vapor emitted from a concrete slab is measured in pounds. This measurement is the equivalent weight of water evaporating from 1000 ft² of concrete surface in a 24-hr period. The calcium chloride moisture test has been the industry standard for making this determination and is a practical, well-established and accepted test of dynamic moisture. It will produce quantified results directly applicable to flooring manufacturer’s specifications. The results obtained reflect the condition of the concrete floor surface at the time of testing and may not indicate future conditions.

ECI has Grade 1- Certified International Concrete Repair Institute (ICRI) Concrete Slab Moisture Testing Technicians with the training and ability to perform the following ASTM Tests:

ASTM F710-11: PREPARING CONCRETE FLOORS TO RECEIVE RESILIENT FLOORING, pH

Significance of Use as listed per the referenced ASTM test:

  • This practice covers the determination of the acceptability of a concrete floor for the installation of resilient flooring.
  • This practice includes suggestions for the construction of a concrete floor to ensure its acceptability for the installation of resilient flooring.
  • This practice does not cover the adequacy of the concrete floor to perform its structural requirements.
  • This practice covers the necessary preparation of concrete floors prior to the installation of resilient flooring.
  • This practice does not supersede in any manner the resilient flooring or adhesive manufacturer’s written instructions. Consult the individual manufacturer for specific recommendations.

ASTM F2170-11: DETERMINING RELATIVE HUMIDITY IN CONCRETE FLOOR SLABS USING in situ PROBES

Significance of Use as listed per the referenced ASTM test:

  • This test method covers the quantitative determination of percent relative humidity in concrete slabs for field or laboratory tests.
  • Moisture permeating from concrete floor slabs affects the performance of flooring systems such as resilient and textile floor coverings and coatings. Manufacturers of such systems generally require moisture testing to be performed before installation on concrete. Internal relative humidity testing is one such method.
  • Excessive moisture permeating from floor slabs after installation can cause floor covering system failures such as debonding and deterioration of finish flooring and coatings and microbial growth.
  • Moisture test results indicate the moisture condition of the slab only at the time of the test.

ASTM F2420-05: DETERMINING RELATIVE HUMIDITY ON THE SURFACE OF CONCRETE FLOOR SLABS USING PROBE MEASUREMENT AND INSULATED HOOD

Significance of Use as listed per the referenced ASTM test:

  • This test method covers the quantitative determination of percent relative humidity above the surface of concrete floor slabs for field or laboratory tests.
  • Moisture permeating from concrete floor slabs affects the performance of flooring systems such as resilient, wood, textile floor coverings and resinous coatings. Manufacturers for such systems generally require humidity/moisture testing be performed before installation over concrete floor slabs. The measurement of relative humidity (RH) directly above the porous surfaces of a floor slab is one such method.
  • Excessive moisture in or emitting from floor slabs after installation can cause floor covering system failures such as delamination, bonding failure, deterioration of finish flooring and coatings, and microbial growth.
  • The surface RH Hood (relative humidity) test method is intended to quantify the relative humidity condition that exists at the surface of a floor slab to which a floor covering or coating shall be applied. Results indicate moisture content conditions at the time of the test, as moisture movement within the slab is dynamic.