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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

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Most clients want their installation completed quickly, or within a time frame that suits their overall project plan.

Sometimes they're not too concerned about the subfloor conditions because they see it as your responsibility.

That is, if something goes wrong with the floor at some time in the future, you'll be liable for it, so they don't have to worry about it.

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This is an important point to keep in mind, because there'll be occasions when you're put under pressure to carry out an installation before the moisture content has reached an acceptable level.

However, you're doing yourself and the client a very big favour by being methodical in your moisture testing, and careful in your professional judgement as to whether the subfloor is ready for the installation.

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In this section, we'll examine the process of carrying out moisture tests on concrete and timber subfloors and discuss the main types of test equipment used.

We'll also look at the process for measuring pH levels in concrete.

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Completing this section

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The assignment for this section is designed to test your knowledge of the different types of testing methods and the way the results should be recorded.

Have a look at the Assignment now to see what you'll need to do to complete it. You'll find the link in the menu bar.

Also in the menu bar are links to the lessons for this section:

  • Principles of moisture testing

  • Insulated hood test

  • In-situ probe test

  • Electrical resistance meters

  • Other moisture testing methods

  • Measuring pH levels

These lessons will provide you with background information that will help you with the assignment.

The Just for fun exercise will test your memory on the main moisture level specifications set down in the Australian Standards.

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