Concrete Moisture Testing

Concrete Moisture Testing

What is a Concrete Moisture Inspection?

Testing concrete for excessive moisture is a common requirement in the construction industry, especially where flooring or other impermeable surfaces are to be introduced. There are several moisture test methods that are available, but there isn’t a single test that reveals everything that should be considered.  The only way to know for sure if flooring can be installed or a coating applied is to test the area.

The certified testing professionals in Water Restoration Technology (WRT) and Applied Structural Drying (ASD), at DynoDry Structural Drying, Inc., are equipped with the most technically-advanced tools in the industry for moisture detection. Moreover, we have been trained to use these tools properly. We also follow the ASTM F2170 guidelines/procedures for determining relative humidity in concrete flooring.

Why is it important?

In mixing concrete, the right thermodynamic condition must exist so that slabs dry the right way and the extra water that is used to hydrate the cement upon mixture, would also evaporate. The speed of the drying process, as well as the strength of the dried cement, can be largely determined by three factors: vapor pressure inside the slab, vapor pressure in the air over the slab and vapor pressure and conditions below the slab. Since vapor pressure plays an important role, it is important to understand it, and the basic thing about vapor pressure is that it is affected by temperature.

Bubbles, delamination, and blisters in cemented floor coverings are the results of miscalculated vapor pressure. Sometimes, the pressure is unable to evaporate the excess moisture, then premature sealing is made, which causes the moisture to be trapped under the floor covering or sealer. Before sealing, the dryness of the cement should be checked to see if it has reached an acceptable equilibrium point. This is a difficult task but a crucial one.

What is the Process?

As mentioned, water plays a vital role in creating a perfect concrete and slab mixture. During the curing period, efforts are made to ensure that the water stays inside the mixture so that the concrete can properly hydrate. However, when the curing period ends, that water presence should be filtered out so that the cement can start drying out. If you mix concrete with a higher water-to-cement material ratio, you can expect that greater moisture is present. However, if your cement mixture is intended for air drying, then there must be lesser moisture. No matter what mixture, flooring, coating, and sealing must only be applied when the water vapor in the slab has reached an equilibrium. This will greatly ensure that no moisture is trapped which could cause problems in the future.

With the use of technically-advanced monitors, moisture-sensing meters and thermal-imaging cameras, we at DynoDry Structural Drying Inc., have the ability to not only locate the problem areas but also determine the source of the intrusion. The equipment we use and our years of experience in dealing with water damage in the Birmingham Metro area gives us the ability to see behind walls and other barriers where the naked eye cannot see. This allows us to develop an efficient and cost-effective action plan. Many times, from our proactive inspections, we are able to repair minor damage before it becomes a major structural and health problem.

Within 24-hours maximum, DynoDry Structural Drying Inc., will present you with an action plan proposal.

Contact the Certified Pros at DynoDry Structural Drying, Inc.

Call us today at 205-623-0151 or contact us by email at