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Unit: Inspecting and testing subfloors

LMFFL2004A: Moisture test timber and concrete floors
LMFFL3101A: Inspect sub-floors

Section 4: Measuring moisture and pH

Just for fun

Audio for slide 1 (mp3 |6|KB)

As we've discussed in this section, the Australian Standards specify different moisture readings in subfloors, depending on the testing method used to measure relative humidity or moisture content levels.

Can you remember what these testing methods and moisture levels are? See if you can match up the correct answers for the three testing methods specified in AS 1884-2012 for resilient floor coverings.

When you've finished, click on 'Check your answers' to see how you've gone.

(Don't forget that these levels are general specifications set by the Standards. The product manufacturers may have their own levels for particular products, which should always take precedence over general requirements.)

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AS 1884-2012 Floor coverings - Resilient sheet and tiles - Installation practices

Image of moisture meter Testing methodMoisture level
Surface-mounted insulated hood test in concreteMaximum RH: 70%
In-situ probe test in concreteMaximum RH: 75%
Electrical resistance moisture meter test in timberMC range: 10-14%