Concrete Cork Sandwich Floor System

[JKJeremy]

We intend to use the RapidRH system to measure the RH in an existing interior slab on grade that has been stained and sealed. Are there any issues with using the RapidRH system in a floor that has already been sealed?

In addition we would like to use the sensors to measure the RH in an existing interior slab on grade of unknown thickness. We do know that the construction of the slab on grade consists of a base layer of concrete directly on grade (thickness unknown) with no vapor barrier, a layer of cork (thickness unknown), and a topping layer of finished concrete stained and sealed (thickness unknown). Any recommendations for use in this floor system?

Any help or suggestions would be greatly appreciated.