Use as many squares as needed to test all the main areas that may get flooring.
Concrete moisture test using plastic sheet method.
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Concrete moisture and vapor test methods 1.
Some methods of concrete moisture testing use a simple qualitative approach.
Firmly press the tape to create a moisture tight seal with the plastic and concrete.
The test shall be conducted prior to the use of coating.
1 2 the values stated in inch pound units are to be regarded as standard.
Tape along all four edges of the square with duct tape or other waterproof tape.
Plastic sheet test astm d 4263 plastic sheet testing method used to indicate the presence of moisture in concrete.
So it is suitable for the case where the application of coatings for concrete surface is planned.
It is important to understand why this testing method is unreliable for determining concrete slab moisture problems.
The values given in parentheses are mathematical conversions to si units that are provided for information only and are not considered standard.
To use this method astm d 4263 standard test method for indicating moisture in concrete by the plastic sheet method a plastic sheet is tightly taped to the concrete.
This video discusses and demonstrates the plastic sheet method for measuring moisture in concrete.
Spread out each plastic square flat over a dry area of concrete.
One such test is the plastic sheet test astm d4263.
1 1 this test method is used to indicate the presence of capillary moisture in concrete.
This means no numbers or data just simple observation or eyeballing of the test location and testing materials for signs of excessive moisture.