The risk of failure in a concrete floor because of excess moisture is high simply because concrete has moisture. Additionally, the costs of misreading the concrete’s moisture condition, and laying down finished floor products too soon, extend well beyond ugly staining or cracking.
Creating an enduring structure requires careful planning for physical and aesthetic integrity. While this symbiosis of artistry and structural stability is not assured until the project is fully complete, getting there requires laying the right groundwork.
Earlier this month, ASTM International published its revised ASTM F2170, Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes. The updated standard reduces the mandatory wait period before obtaining official, documentable results from an in-situ relative humidity (RH) moisture test performed in concrete floor slabs from 72 to 24 hours.
A masonry cavity wall system must successfully perform multiple functions throughout the life of the building. A proper wall is expected to manage moisture, air, and heat, contain fire, and hold up the structure itself.