Concrete Moisture Testing
In the rapidly changing world of commercial flooring, new adhesives, mitigation products, installation methods, and flooring materials, alongside increasing environmental regulations and fast-track construction have created a complex environment in which floor covering products are installed. This creates a demand for professional concrete moisture testing conducted by an experienced independent concrete slab moisture testing company. IFTI’s concrete moisture testing experts are prepared to conduct testing and inspection of commercial sites for any issues related to flooring and concrete.
As the leading professionals in the concrete moisture-testing industry, our experience has led us to the conclusion that the more information learned about any concrete subfloor, the greater the chances for a project’s success.
Pioneering solutions is what we do. Don’t see the service you are looking for? Just ask and we may be able to provide a custom solution. IFTI offers some of the most accurate and innovative testing methods on the market today.
What are the Tests Conducted by IFTI?
Most qualified professionals agree that the two most effective test methods to determine concrete moisture are the calcium chloride test for moisture vapor emission rate (MVER) and the in-situ relative humidity test(RH).
Calcium Chloride/ Moisture Vapor Emission Rate (MVER) testing: ASTM F1869 Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride. This test method provides valuable information about how much moisture is being emitted from the surface of the concrete.
This test has been in practice since the 1960’s and is still a recognized test method for most product manufactures today.
This test is conducted by placing a dish of calcium chloride on an abraded concrete surface, then covering the test site with a plastic dome. The test site will remain sealed for 60-72 hours to allow moisture from the surface of the concrete to absorb into the calcium chloride dish. Afterward, the amount of moisture absorbed during the test will measured by calculating the difference in the weight of the dish pre and post-test. The final test result is expressed by pounds of vapor over 1,000 square feet of concrete over a 24 hour period. Product limits for this test can be as low as 3 pounds for very sensitive floor types and as high as 8+ pounds for less sensitive floor coverings.
Relative Humidity (RH) testing: ASTM F2170 Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes.
Testing with this method will provide valuable information about how much moisture is within the concrete. Detection of concrete moisture levels only at the surface of your concrete does not provide an adequate assessment, which is why it typically makes sense to test for relative humidity (RH) in addition to calcium chloride testing.
Relative humidity (RH) testing has been common practice outside the United States since the 1980s. It wasn’t until 2002 that the test became an ASTM recognized test. Since then, much research and field data has been obtained, and today almost all product manufactures recognize this test method for warranty purposes.
This test is conducted by drilling a hole into the body of the concrete and measuring the relative humidity at the bottom of the hole using a probe. A recent update to the ASTM standard has reduced the minimum equilibrium time to 24 hours, making this test more viable in time-sensitive situations.
pH Testing: ASTM F710 Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring. This test method measures the concentration of hydrogen ions within an aqueous solution. Both high concentrations (acidic) and low concentrations (alkaline) are known to negatively affect the viability of flooring and adhesives.
Since flooring manufacturers specify guidelines for pH, it is also critical to know if your concrete is within these specifications in order to avoid flooring failures or expensive flooring installation mistakes.
Our IFTI certified field technicians have the skills and expertise necessary to inspect any floor.
Floor survey: Whether the flooring is failing, is scheduled to be replaced, or has just been installed IFTI can observe and comment on the existing conditions of the flooring system.
Photo survey: A picture can be worth a 1,000 words. If needed we can provide a comprehensive photo survey of an existing floor. Using high resolution cameras and cloud storage, you will have access to many high quality photos at the tip of your fingers.
Interactive 3D Mapping: If a picture is worth 1,000 words, how much is a 3D interactive map of your entire project worth? Using cutting edge 3D mapping software, IFTI can capture your entire project in HD. To find out more about the capabilities of the software, call us at 800.490.3657.
Subslab Conditions Inspection (Coring): The quality and location of a vapor retarder is crucial to the success of any on grade flooring installation. However, it’s common in existing structures that the quality and location of the vapor retarder is unknown. In these situations we recommend our subslab condition inspection where we will core through the concrete slab and determine the presence and location of the vapor retarder.
Installation Inspection (site audit): When failure is not an option, installation inspections may be necessary. Our on-site installation audits will ensure that you are aware of any issues at the time of the installation, before it's too late. All observations made during these audits will be compiled into a report, complete with photo documentation.
If you are unsure which tests are required for your specific site and products, just give us a call. We have solution specialists on call that can help determine the specific test necessary for any project.