ASTM F formally recognizes the use of in situ probes as a means of conducting relative humidity testing. In fact The Standard The In-Situ Method In-situ concrete moisture testing places sensors, or probes, inside the slab itself . This test method covers the quantitative determination of percent relative testing. The ASTM F standard represents a fundamental change in how. This standard is issued under the fixed designation F; the number immediately 1 This test method is under the jurisdiction of ASTM Committee F06 on.

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This site uses Akismet to reduce spam. Meeting this standard standqrd the groundwork for limiting moisture-related flooring problems and the many liabilities and mitigation problems that can result from excess moisture.

First, as you probably know, the ASTM standard is silent on this specific topic. Leave a Reply Cancel reply Your email address will not be published.

The only thing we recommend is that you ensure that there is a good seal tesg the sensor body and the concrete wall. At this point, if one test fails, they all fail.

This website uses cookies. The test hole depth is not a fixed depth, but it must be calculated based on slab thickness and number of drying sides: Map your sensor count and location. We also will not be shipping on these days, but will resume shipping on Tuesday, January 2nd.

In this way, in situ measurement provides a composite picture of overall slab moisture levels, and provides the data necessary to make business decisions regarding flooring installations. These first five steps are all preparatory merhod should be done before any sensors or RH probes are installed. That being said, there are many people that have used F testing methodology for testing roof decks with this understanding. Logically then, moisture levels at the bottom of a slab will read higher from those at the surface.


Can you please let me know your recommendation on this? ASTM F formally recognizes the use of in situ probes as a means of conducting relative humidity testing. In celebration of the New Year, we will be closing early at After the initial reading, readings can be updated at any time desired with ttest conditions in mind: Your email address will not be published.

ASTM F Explained – ASTM F Information

Concrete slab moisture is a major cause of concrete flooring failure. All sensors must be calibrated no less than 30 days prior to use. Thanks for the question. Once you find out the methodology they require to meet warranty, I would reach out to someone within RCI in your area f21170 conduct the tests. How do you handle this problem? June 8, at 1: Is this acceptable or compromise the test?

This process requires time and quantifiable concrete moisture measurements to verify.

It has been believed that the change in the desiccant weight could be translated into a moisture ratio for the concrete beneath. In situ moisture measurement systems are evolving rapidly as a result of ATSM F and reflect the industry realities of the concrete installation business. Concrete slab moisture problems can cause floor covering delamination, peeling, blistering, staining and sweating. In-situ probes deepen concrete moisture measurement.

Surface-based test results will fluctuate, even more, under these changes in environmental conditions. December 27, at 3: June 9, at 1: Each test wtandard must be drilled to the depth determined at Step 5 above section 10 of ASTM F and properly prepared.

Sub-grade water vapor can permeate even well-mixed and applied slabs. The total area of the slab and the number of test holes must be recorded on your report. For most RH testing systems, this includes cleaning any debris out of the test hole and inserting the necessary liner in the hole.


If you forward to 1: In-situ concrete moisture testing places sensors, or probes, inside the slab itself. Know the required depth of the standarr holes. That being said, I have heard a couple of different methods people are using. Does the finish roof product have specifications for testing the concrete deck? Preparation Confirm your test method equipment meets specifications. And moisture can still be an issue at grade so concrete foundations must be designed to include proper moisture drainage.

As any professional mehtod, ASTM standards are established to help guide industry testing and also to help ensure standardized best practices to protect both the installer and the consumer. The standard provides precise guidelines for RH testing methods. Make sure your calibration is up to date.

10 Guidelines for ASTM F2170 Preparation and Testing

Concrete absorbs water vapor from the air under high ambient humidity; concrete releases more water vapor when the humidity of the surrounding air is low. F requires three test holes for the first ft 2 and, at least, one additional hole for each additional ft 2. With all areas of ASTM-compliant RH testing, precision is key and data integrity must also be the focus for each flooring professional. Be sure to familiarize yourself with ASTM F and choose the best concrete testt test r2170 for the job.

Many contractors use vapor barriers directly under the slab to slow moisture permeation. Jason, I appreciate this means to contact you. Use our checklist to record and report the RH readings.