PCB waterproofing BME680 and Konform SR

[dnear]

I'm building  some outdoor-installed pollution sensors and despite being in a rainproof enclosure, need to further waterproof the PCBs against dew and humidity.  I know the BME680 sensor guide recommends against things that contain siloxanes.

Does anyone know whether Konform SR  would cause issues? (Provided I keep the sensor port covered while applying)

https://www.alliedelec.com/product/chemtronics/ctsr-12/70206148/

[Vincent]

We have listed in datasheet that drift +/-1% +/-4 IAQ (+see footnotes for the conditions) for siloxanes.    

The material you want to use contains Silicone which contains similiar component to siloxanes,  so we might refer to same comments.  

this means using this,  will cause more or less drift listed here.  

You can consider to use membrane instead of conformal coating on top of the PCB.