How to perform a non-destructive Concrete Moisture Test

Step 1: Clean the floor area

Before conducting the non-destructive impedance test, make sure that the concrete surface is clean.

Abrade any residue on the slab to clear it and avoid any painting or drywall mud on the concrete floor.

Step 3: Repeat test in the required locations

Perform at least eight tests for the first 1000ft2 (100m2) and at least five additional tests for each additional 1000ft2 (100m2). Include test locations in the centre of the floor and within 3ft (1m) of each exterior wall.

Check the floor covering manufacturers' guidelines to see if your readings fall within the given recommendations. 

Industry professionals generally recommend a moisture content of 4% MC for floor coverings and 3.5% MC for concrete coatings on newly-poured concrete (For more information click here). However, it's always best to check the floor manufacturers' guidelines.

Concrete Moisture Encounter CMEX5

The digital CMEX5  is a non-destructive digital concrete moisture meter. It reads into the top ¾ inch layer of the slab and provides instant, accurate, quantitative moisture content results.

The CMEX5 has the added benefits of being a relative humidity meter with its built-in hygrometer for ambient RH and temperature sensor, which is essential for determining any dew point issues at time of installation.

The CMEX5 also features a plug in port for Hygro-i2 Relative Humidity probes to carry out the ASTM F2170 test and for attaching optional wood pin probes and Relative Humidity sensors.

All measured data can be saved to the Tramex Meters App for moisture mapping, creating reports and sharing results with clients. This data can prove crucial for all parties involved to make sure that all requirements have been met.