Concrete Slab Moisture
Guide
Concrete Slab Moisture
Installing flooring over a concrete slab without verifying moisture conditions can lead to costly failures. This guide explains why moisture testing matters and what methods are used.
Why moisture matters
Excess moisture in concrete can cause adhesive failure, flooring buckling, mould growth and warranty voidance.
ASTM F2170 - In-situ RH
The most reliable method: measures relative humidity inside the slab using calibrated probes inserted at depth.
ASTM F1869 - Calcium chloride
Measures the moisture vapor emission rate from the concrete surface over a 60-72 hour period.
Interpreting results
Results are compared to flooring manufacturer thresholds. We help you understand what the numbers mean for your project.
Do you have a question or a specific situation?
Describe your issue and we will determine the appropriate type of intervention.